Disertación/Tesis

Clique aqui para acessar os arquivos diretamente da Biblioteca Digital de Teses e Dissertações da UFRN

2024
Disertaciones
1
  • ORIGILENE BEZERRA DANTAS
  • Phylogeography of Rowlandius potiguar Santos, Ferreira & Buzzato, 2013 (Arachnida: Schizomida: Hubbardiidae) in Caatinga caves

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • ADALBERTO JOSÉ DOS SANTOS
  • IVAN LUIZ FIORINI DE MAGALHÃES
  • Data: 16-feb-2024


  • Resumen Espectáculo
  • Most of the caves in the State of Rio Grande do Norte (RN) are located in the limestones of the Jandaíra Formation, in the Caatinga. This region is considered to be of high biospeleological relevance, as it presents a high richness and concentration of species that are adapted to underground environments. Among them are the arachnids of the order Schizomida, also known as the short-tailed whip scorpion, whose species Rowlandius potiguar was recorded in 30 caves in western RN. Although some caves are protected in the Furna Feia National Park (PNFF), the majority are not in protected areas, making them vulnerable to different types of anthropogenic impacts. This wide distribution may reflect a troglophilic species that eventually colonized caves throughout the Jandaíra Formation, or a complex of troglobite species, as detected in other invertebrates in the region. To answer this question through a phylogeographic approach, we collected these schizomids in 12 caves of their known distribution, including the Casa de Pedra cave, which is the southernmost record of Rowlandius in RN, in the Jucurutu formation, as well as recording 14 new occurrences. Phylogeographic and phylogenetic analyses, using the molecular markers mitochondrial cytochrome C oxidase I and nuclear rDNA 28s, indicated that R. potiguar is a species complex, with two possible new species, one restricted to the Casa de Pedra cave (Rowlandius sp. n.2), and one more supported by morphological data on the female internal genitalia and the shape of the terminal flagellum at the end of the male abdomen, occurring in thirteen caves (Rowlandius sp.n.1). Furthermore, phylogeographic analyzes detected a structure of five populations for R. potiguar and three for Rowlandius sp.n.1. These lineages occur in allopatry and did not present a defined distribution pattern. We also highlight that the species identified in the complex are protected in conservation areas, such as the Furna Feia National Park, in Baraúna, and the Cavernas de Martins Natural Monument, in Martins. However, it is important to highlight that there are vulnerable populations in the municipalities of Governador Dix-Sept Rosado and Felipe Guerra. With this, we propose updating the taxonomy and geographic distribution of R. potiguar, while suggesting an increase in the richness of the genus Rowlandius in the Caatinga.

2
  • KAIRO DOURADO BARBOSA
  • DIVERSITY AND TAXONOMY OF GASTEROID FUNGI FOR CERRADO AREAS IN WESTERN BAHIA

  • Líder : RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • MIEMBROS DE LA BANCA :
  • BIANCA DENISE BARBOSA DA SILVA
  • BRUNO TOMIO GOTO
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 29-feb-2024


  • Resumen Espectáculo
  • Gasteroid fungi are primarily characterized by angiocarpic development (within a closed hymenophore) with the absence of a hilar appendage, necessitating the passive dispersion of their basidiospores during the maturation stage. These organisms represent a polyphyletic category within the Phylum Basidiomycota and share homoplastic morphological adaptations. Being a non-monophyletic group, species cataloging data are often diluted in publications by genera, or at best, by families. In Brazil, 232 species are documented, with around 50 of these in the Northeast region, predominantly in the Atlantic Forest. The present study aimed to assess and enhance knowledge regarding the taxonomic diversity of gasteroid fungi in Cerrado areas in Western Bahia, a region that remains largely unexplored with limited species records, in order to acquire biodiversity data essential for the conservation and preservation of the studied conservation units. Collections were conducted in two municipalities within the Intermediate Geographic Region of Barreiras, Western Bahia: São Desidério and Barreiras. Three significant areas with distinct phytophysiognomies were chosen for the Cerrado in Western Bahia: the Rio de Janeiro Basin Environmental Protection Area, situated between the municipalities of Luís Eduardo Magalhães and Barreiras, covering an area of 351,300 ha; the São Desidério Environmental Protection Area, located in the municipality of São Desidério, spanning an area of 10,961.14 ha; and the Rio de Ondas Hydrographic Basin, which traverses the municipalities of Barreiras and Luis Eduardo Magalhães, encompassing an area of 5,857 km². In total, 30 species were described, distributed across 10 genera and five families. For the Cerrado biome, 24 taxa were documented for the first time, an increase of approximately 35%, with four new records of second occurrence. The study unveiled 11 species new to science, all corroborated by morphological data, of which three were additionally validated by molecular data.

     

3
  • MARIA GEOVANA DE MESQUITA LIMA
  • Taxonomic Diversity and Influence of Environmental Factors on Collembola (Arthropoda: Hexapoda) Communities of Ilha das Canárias, Maranhão, Brazil

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • CLÉCIO DANILO DIAS DA SILVA
  • RENATA ANTONACI GAMA
  • Data: 11-mar-2024


  • Resumen Espectáculo
  • This study aimed to provide a faunal survey of the Collembola in the Environmental Protection Area of the Parnaíba Delta – Ilha das Canárias, and to describe how the richness and abundance of their populations are affected by seasonal variations, environmental variables, and spatial characteristics of the region. For specimen sampling, two collections were carried out, one in the rainy season and another in the dry season, with five sampling points containing pitfall traps along a 200 m transect in each phytophysiognomy. Data on environmental variables (air and soil temperature, pH, vegetation richness, soil moisture, organic matter, canopy cover, and soil texture) were collected. The collected material was sorted, morphotyped, and mounted on slides for taxonomic identification. Alpha diversity was quantified using species richness and diversity indices (Shannon-Weaver, Simpson, Pielou), while Whittaker's index was used to estimate Beta diversity. Abundance and α diversity were individually assessed in relation to space-time factors through Mixed Generalized Linear Models and Permutational Multivariate Analysis of Variance for β diversity. Non-metric Multidimensional Scaling was used to plot the biotic data matrix in relation to space-time factors. Finally, the abundance of each taxon was related to the sampled environmental variables through Redundancy Analysis. A total of 5,350 specimens were collected, representing three orders, eight families, 23 genera, and 31 morphospecies and one nominal species. In the dry season, 2,205 individuals were collected, representing three orders, six families, 16 genera, and 21 morphospecies. The highest abundance was observed in Riparian Forest (1147), followed by Restinga (934) and Mangrove (89). In the rainy season, a total abundance of 3,145 individuals was collected, representing three orders, eight families, 19 genera, and 25 morphospecies. Restinga showed the highest abundance (1513), followed by Mangrove (1339) and Riparian Forest (291). Riparian Forest presented the highest α diversity values with higher species richness. β diversity was recorded at higher values in Mangrove. The environmental variables vegetation richness, soil moisture, and litter significantly influenced the species Dicranocentrus sp.1, Proisotoma sp.1, Lepidocyrtus sp.3, and Salina sp.1; while Seira sp.2, Pseudosinella sp.1, and Seira sp.1 were positively associated with soil temperature, air temperature, and pH. Other species showed low explanatory power with the analyzed environmental variables. This study represents an initial effort to understand a unique fauna with potentially several new species in a previously unexplored ecosystem.

4
  • YURI GOMES ABRANTES
  • Biogeography, systematics and conservation of a complex of seasonal killifishes species of the genus Hypsolebias Costa 2006 (Cyprinodontiformes: Rivulidae) from the Caatinga

     

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • MATHEUS VIEIRA VOLCAN
  • ROSANA MAZZONI BUCHAS
  • Data: 11-mar-2024


  • Resumen Espectáculo
  • In Brazil, the neotropical seasonal killifishes genus Hypsolebias can be found in temporary pools within the floodplains of the Cerrado and Caatinga hydrographic basins. Over the past two decades, Hypsolebias has undergone frequent taxonomic changes that have led to the recognition of new phylogenetic relationships, providing an investigative framework for the evolutionary biogeographic patterns of the genus. This study focuses on the species group Hypsolebias antenori in the Caatinga hydrographic basins, where allopatric or parapatric lineages exhibit intense sexual dimorphism. These lineages are identified by differences in the color patterns of male fins, as well as morphometric and meristic characters that distinguish them. Since its discovery in 1952, the species H. antenori was initially acknowledged to have a broad geographical distribution across the Pacoti, Jaguaribe, Apodi-Mossoró, and Piranhas-Açu river basins. Through an integrative taxonomy approach, three new species were diagnosed, and H. antenori was restricted to the Jaguaribe River basin. The recognition of the three new species required a new systematic proposal for the H. antenori group. While phylogenetic analyses of molecular delimitation reveal that the H. antenori group can be separated into three species complexes, chrono-phylogenetic reconstructions date the divergence time between them to the late Pliocene. These results allow for the suggestion of the conservation status of the new species and a discussion on whether the divergence time between the H. antenori complexes reflects synchronicity with geomorphological episodes that altered the paleocourse of the São Francisco River. This river's mouth was situated in the North Atlantic through hydrographic connections with the Parnaíba, Jaguaribe, and Piranhas-Açu river basins until the Neogene period.

     

5
  • BRUNA MARIA DA SILVA
  • ECOLOGY OF SPRINGTAILS (ARTHROPODA: HEXAPODA) IN THE EPEDAPHIC ENVIRONMENT OF A CERRADO-CAATINGA TRANSITION AREA: DO SEASONALITY AND VEGETATION PROFILE AFFECT THEIR COMMUNITIES?

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • ALEXANDRE DE OLIVEIRA MARQUES
  • BRUNO CAVALCANTE BELLINI
  • CLÉCIO DANILO DIAS DA SILVA
  • Data: 12-mar-2024


  • Resumen Espectáculo
  • Springtails are microarthropods widely distributed in all terrestrial ecosystems, primarily associated with the soil environments. Despite playing a fundamental role in ecosystem functioning, studies involving these animals are limited and mostly deal with taxonomy, especially those conducted in Brazil. Therefore, the main objective of this study was to compare the community of epedaphic springtails in different phytophysiognomies of the National Park of Serra das Confusões (PNSC - Piauí state, Brazil), namely Floresta Semidecidua (Canion), Savana Estépica (Lajeiro), and Carrasco, assessing the effects of seasonality, vegetation profiles, and other biotic and abiotic variables on the populations surveyed. Two collections were carried out in the PNSC, representing two periods: one during the dry season and one during the rainy season, using pitfall traps and measuring environmental variables such as air and soil temperature, soil humidity, relative humidity, soil pH, litter depth, canopy shading, and plant richness. In the laboratory, specimens were screened, morphotyped, assembled, and identified. To recognize which variables had the highest values among the vegetation types and periods, an analysis of environmental characterization was conducted through a Permutational Multivariate Analysis of Variance (PERMANOVA). Alpha diversity analysis included estimates of abundance, richness, diversity, and evenness, with a subsequent analysis of variance. For beta diversity analyses, PERMANOVA was conducted, Whittaker's method was used for beta diversity, and species composition was plotted in a Non-Metric Multidimensional Scaling (NMDS) analysis. Indicator species analysis was calculated with the IndVal index Finally, a Redundancy Analysis was performed to assess the influence of environmental parameters on the Collembola community. A total of 29,616 springtail specimens belonging to three orders, 12 families, 31 genera, 42 morphospecies, and 4 nominal species were sampled during the two collection periods. Abundance and richness analyses indicated significant differences between the different seasons, with the dry period showing higher values compared to the rainy season. Shannon-Wiener and Simpson Diversity analyses indicated significant differences in the interaction between the two periods, especially in the Lajeiro vegetation type, with lower diversity in the area, as well as the Pielou's evenness index, which also showed significant differences in the Lajeiro during the rainy period. The main environmental variables influencing diversity patterns were: canopy cover, litter depth, silt percentage, and soil temperature. Also, our date resulted in a comprehensive inventory of families and genera for the state of Piauí, resulting in an increased understanding of the group in the region.

6
  • SALU COELHO DA SILVA
  • Geographical distribution, climate change, and conservation of the non-annual rivulid Anablepsoides cearensis (Costa & Vono, 2009) (Cyprinodontiformes: Rivulidae) in the Caatinga

     

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • EUGENIA ZANDONA
  • RENATA GUIMARÃES FREDERICO
  • Data: 12-mar-2024


  • Resumen Espectáculo
  • The family Rivulidae is the most threatened group of freshwater fish in Brazil. Species in this family are small, colorful, and can be classified into two groups based on their adaptations to shallow water bodies: annual species from seasonal environments, and non-annual species from swamps or perennial wetlands. Most rivulids in the Caatinga are annual, with few non-annual representatives. Among these, Anablepsoides cearensis (Costa & Vono, 2009) is the only non-annual rivulid endemic to the Brazilian semiarid region, belonging to a group primarily from the Amazon and currently classified as 'critically endangered' due to its restricted, fragmented distribution and potential threats. After its description in a shallow stream in a forest fragment in São Gonçalo do Amarante, Ceará (CE), the species was recorded 77 km to the west, raising questions about its range extension. Assuming that the species distribution was wide and only sub-sampled along the coastal basins of CE, I sought an optimization sampling strategy based on Ecological Niche Models. To overcome the scarcity of occurrences (n=6), and based on the phylogenetic niche conservation, I included more closely related species in the initial models. To do so, I determined the phylogenetic relationships of A. cearensis as sister to A. vieirai from the Cerrado, and in a clade with A. urophthalmus (Amazon) and A. bahianus (Atlantic Forest) through molecular systematic. From this initial model, two expeditions were conducted, which yielded new records that fed back into the model with each collection. As a result, the distribution area expanded from three to nine occurrences and from three to seven hydrographic basins. The identity of the specimens was confirmed by genetic distance using mitochondrial markers. I also created a final model only with A. cearensis and evaluated whether there would be a loss of climatic suitability in the future considering three scenarios of climate change. Since it is a group originally adapted to humid forests, its occurrence seems limited to the coastal area of CE, which is a region with a more humid and milder climate. Depending on these environments makes the species more vulnerable to climate change, as according to projections until 2100 there will be a loss of climatic suitability with warming. Threats to the species such as stream damming, pollution, and introduced species such as Betta splendens Regan 1910 and Heros sp. were also verified. With the observation of these impacts, new records, including three conservation units, and using IUCN criteria, I recommend a reclassification of the threat to the 'endangered' category.

     

Tesis
1
  • JÉSSICA FERNANDA RAMOS COELHO
  • Exploring environmental effects on the genetic diversity and connectivity of populations of the Brazilian scaled-sardine Harengula sp.

     

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • LIANA DE FIGUEIREDO MENDES
  • MIRIAM PLAZA PINTO
  • ANDERSON VILASBOAS DE VASCONCELLOS
  • FELIPE DE MEDEIROS MAGALHÃES
  • Data: 14-mar-2024


  • Resumen Espectáculo
  • Biodiversity loss is currently a major concern in conservation and evolutionary biology. Global warming can aggravate this scenario, as numerous species are already living closer to their thermal limits, especially tropical ones. Understanding the environmental features that drive population dynamics is an important step towards establishing the sustainable use of natural resources, once the environment influence species’ distribution, diversity and, ultimately, their evolution. In the present thesis, divided in three chapters, I used genomic and ecological data to understand how the environment guides the evolution of scaled sardines Harengula sp., a putative undescribed species at the Brazilian coast. In the first chapter, I estimated how past climatic cycles impacted the demographic history of Harengula sp. in the Atlantic Southwest. I found that this lineage is structured by depth and salinity in two populations that reflect the shallow-water habitat expansion following the LGM: a large, more diverse and expanding at the Brazilian coast, (coastal population, Ne 3.6) and a smaller, which contracted to a third the size of an ancestral population at the oceanic archipelago of Fernando de Noronha (FNO, island population, Ne 0.3). The status of the FNO population is more sensible, considering that Harengula sp. is of fundamental commercial and ecologic importance as the only sardine species in the archipelago, where conflicts remain unsolved between park managers and local fishers demanding the exploitation of this fishery in the park’s no-take zone. High differentiation (Fst 0.14) despite symmetric gene flow between coastal and insular populations reinforces the need for different management strategies for these two populations. In the second chapter, I investigated the dynamics of habitat occupation in the present climate and estimated habitat change given a future of global warming. Niche modelling indicates southward shift and range contraction of environmental suitability for the scaled sardines Harengula sp., a change that increases as the scenarios modelled for the future are aggravated. Larval dispersal models indicate that marine protected areas (MPAs) in islands, such as FNO, Abrolhos, and Rocas Atoll, currently act as a biodiversity and fishery spillover to the coastal mainland, potentially minimizing the effects of overfishing at the Brazilian coast and increasing population resilience to cope with habitat change. However, distantly located MPAs (>1,000 km) such as Trindade-Martim Vaz, are not a source of sardines’ larvae to the coast. The larval connection between FNO and the Brazilian coast reflects the genetic admixture between coastal and island populations aforementioned, demonstrating the dispersal potential of early life stages of this species. In the third chapter, I tested the effects of the environment on the structure of coastal and island (FNO) populations, testing the hypothesis of climatic stability over time harbour higher genetic diversity. I found no statistically significant correlation between the environmental features (present suitability and climatic stability) and genetic patterns tested (nucleotide diversity and demography). Here, the model that considers only geographic distance explains the patterns of genomic diversity of Harengula sp. as well as the model that includes environmental resistance combined with geographic distance, reflecting the pattern of isolation by distance indicated in chapter 1. In this thesis, combining methods allowed uncovering cryptic genetic diversity, detecting population dynamics, estimating dispersal ability, habitat change and its impacts on the evolutionary trajectory of an undescribed marine species in the Atlantic Southwest.

     

2023
Disertaciones
1
  • GLÁUCIA LIDIANE DA SILVA
  • Passiflora L. in the Atlantic Forest of Rio Grande do Norte state: taxonomy and conservation status

  • Líder : RUBENS TEIXEIRA DE QUEIROZ
  • MIEMBROS DE LA BANCA :
  • SARAH MARIA ATHIÊ DE SOUZA
  • LUIS CARLOS BERNACCI
  • RUBENS TEIXEIRA DE QUEIROZ
  • Data: 12-abr-2023


  • Resumen Espectáculo
  • Passiflora L. has 500 species and pantropical distribution, its species are known by passion fruit and them occur mainly in South and Central America. In Brazil, 157 species are registered, among which, 87 species are endemic. The Atlantic Forest has the highest richness of Passion fruit's species compared to other domains in Brazil, 85 species. In chapter 1, we present the taxonomic treatment of Passiflora L., the most representative genus in Passifloraceae s.s. family, at the Atlantic Forest in Rio Grande do Norte state (RN); in chapter 2, the conservation status of the inventoried species is evaluated. This study promoted an increase in the sampling effort of the genus for the domain, where 12 species were registered: Passiflora alata Curtis, P. auriculata Kunth., P. cincinnata Mast., P. edulis Sims, P. foetida L., P. laurifolia L., P. mucronata Lam., P. silvestris Vell., P. suberosa L., P. subrotunda Mast., P. watsoniana Mast. and a specie that its characterization wasn’t possible with no other specie of the group, Passiflora sp. The increase in sampling effort enabled their conservation assessment and analysis of geographical distribution at the Atlantic domain in RN. Among the species, four were classified “Critically Endangered”, four as “Endangered”, one as “Vulnerable”, one as “Near Threatened” and two as “Least concern”. This study reveals the worrying conservation scenario of Passiflora at Atlantic Forest in RN. Also, these results show the importance of movements that encourage floristics studies, auxiliary taxonomic tools and promotion of actions that aims the flora conservation, in addition to the relevance of monitoring these populations in Atlantic forestry remnants of RN.

2
  • HELOYSA FARIAS DA SILVA
  • Diversity and Distribution of Hyphomycetes Associated with Different Substrates and Sampling Methods in Aquatic Ecosystems of the Atlantic Forest of Rio Grande do Norte, Brazil

  • Líder : PATRÍCIA OLIVEIRA FIUZA
  • MIEMBROS DE LA BANCA :
  • PATRÍCIA OLIVEIRA FIUZA
  • BRUNO TOMIO GOTO
  • LOISE ARAUJO COSTA
  • Data: 12-abr-2023


  • Resumen Espectáculo
  • Aquatic hyphomycetes constitute the asexual phase of ascomycetes and basidiomycetes that complete one or more phases of their life cycle in water. These fungi act in the decomposition of submerged substrates, making the dissolved organic matter more palatable and with greater nutritional value for consumption by other decomposers. In Brazil, the first records were known in the Atlantic Forest of São Paulo in 1989. In the Brazilian Northeast, records are scarce in remnants of the biome of the states of Bahia, Pernambuco and Rio Grande do Norte. The present study aimed to carry out an inventory of aquatic hyphomycetes in areas of the Atlantic Forest of Rio Grande do Norte, as well as to analyze the diversity and composition of communities of these fungi in streams and lakes in Rio Grande do Norte. An inventory of aquatic hyphomycetes previously isolated from the streams was carried out: Baldum (Georgino Avelino-RN), Boa Cica (Nísia Floresta), Catu (Canguaretama-RN), Espinho (Canguaretama-RN), Pedra (Baía Formosa-RN) and Guajú (Formosa Bay-RN). In addition, submerged substrates (leaves and branches) and water parameters were collected from the water bodies of the Pium and Jiqui streams (Parnamirim-RN), and from the Jiqui lakes (Parnamirim-RN) and Ilhota (Nísia Floresta-RN) from June 2021 to April 2022. Humid chamber and submerged incubation methodologies were applied. For the ecological analyses, the T test and the Mann-Whitney Wilcoxon test were used to compare the averages of the environmental variables between different types of ecosystems, in addition to the sampling methods, considering abundance, richness and diversity. The composition of genera in ecosystems and methodologies was analyzed using Sankey and Venn diagrams. Nested ANOVA and Kruskal-Wallis were performed to assess the difference in means between ecosystems. Nested PERMANOVA was used to compare total beta diversity (βtot), turnover (βrep) and nesting (βnes) between lakes and streams and between leaves and twigs within the two types of ecosystems. With the results of the dissertation, two chapters were written: i) Aquatic hyphomycetes associated with plant debris in freshwater ecosystems of the Atlantic Forest of Rio Grande do Norte, Brazil; and ii) Comparison of sampling methods for analyzing the replacement of fungal species in contrasting aquatic ecosystems. In the first chapter, 76 taxa were observed, distributed in 35 genera of aquatic hyphomycetes associated with plant substrates in water bodies of the Atlantic Forest of Rio Grande do Norte. Among the identified species, Flagellospora minuta is a new record for the Americas; Gyrothrix encephalarti and Triscelophorus konajensis for Brazil; Flagellospora stricta, Polylobatispora deltoidea, Pseudoxylomyces elegans and Spirosphaera carici-graminis are new records for the Brazilian Atlantic Forest; and 13 are new records for Rio Grande do Norte. While, the second chapter presented 42 taxa of aquatic hyphomycetes, distributed in 34 genera. Twenty-three taxa were found on leaves, 12 on branches and seven on both substrates. For the methodologies, 25 taxa were found in humid chamber, 14 in submerged incubation and three in both methodologies. Twenty taxa were found only in lakes, 19 only in streams and four in both environments. The environments were little variable regarding the abiotic parameters of the water bodies. The only significant difference found was between the pH values of the Ilhota and Jiqui lakes. No effects were observed on abundance, richness and diversity between ecosystems and within sample units. However, the contribution of nesting increases the variation in fungal species composition when species abundances are considered. For the submerged incubation methodology, beta diversity is highest in the twig substrate. The study demonstrated a high richness of aquatic hyphomycetes for the Atlantic Forest of Rio Grande do Norte and can subsidize Funga conservation studies in these areas. In addition, the high substitution of species between the methods reinforces the importance of the combined use of different sampling strategies for a greater and better representation of fungal communities in continental aquatic ecosystems.

3
  • NAASSON VICTOR LAURENTINO DE OLIVEIRA
  • Arbuscular mycorrhizal fungi (Glomeromycota) in different phytophysiognomies in an Brejo de altitude in northeastern Brazil

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • PATRÍCIA OLIVEIRA FIUZA
  • CAMILA PINHEIRO NOBRE
  • Data: 17-abr-2023


  • Resumen Espectáculo
  • The “Brejos de altitude” are “islands” of humid forests surrounded by dry vegetation, characterized as part of the Atlantic Forest, in the Caatinga Domain. These environments are areas with privileged characteristics and conditions in terms of soil and air humidity, temperature and vegetation cover. Those factors influence the development of microorganisms. However, these areas are scarce in studies on diversity, mostly Arbuscular Mycorrhizal Fungi (AMF). These fungi, which form extensive symbiosis with plant roots, are important for increasing nutrient absorption zone and promoting plant growth. However, knowledge of the diversity, richness and ecological strategies of these fungi in high altitude areas still incipient and requires further research. For this reason, we compare AMF communities between different phytophysiognomies in an brejos de altitude of the Caatinga Domain. For this, soil and litter samples were collected during the rainy season of January/2022, in the Ubajara National Park, Ceará State. Two approaches were used to assess richness and diversity of AMF in different phytophysiognomies, (i) extraction of glomerospores by wet sieving and centrifugation in water and sucrose (70%) for the soil and (ii) collection of glomerocarps, using tweezers and the aid of a magnifying glass hand to the litter. Species were evaluated for frequency of occurrence and abundance and classified as dominant, common, very common or rare. They were subjected to diversity indices, in addition to assessing differences in community composition with a PERMANOVA and ANOVA to test differences in absolute species richness. Fifty-four AMF species were found, of which 39 occurred in the humid forest soil and 39 in the dry forest soil. Only 14 species occurred in the litter; being 10 in the humid forest and seven in the dry forest. Some species were identified only for one type of vegetation and/or substrate. The predominant community consisted of rare and few dominant species. PERMANOVA showed that AMF communities differ between vegetation types, between substrate types and in their interactions. This indicates that AMFs have a preference for environments and/or strips of the terrestrial substrate. It also demonstrates the importance of environments such as Brejos de altitude as reservoirs of biodiversity. In addition, new methods can expand knowledge about the ecology of the group.

4
  • VÍTOR MATEUS RIGOTTI
  • Impacts of the conversion of native grassland to soybean monoculture on the epiedaphic springtail fauna of the Brazilian Pampa

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • KAUANE MAIARA BORDIN
  • BRUNO CAVALCANTE BELLINI
  • RUDY CAMILO NUNES
  • Data: 26-abr-2023


  • Resumen Espectáculo
  • The edaphic fauna holds a great importance for the dynamics of soil ecosystems. Among the components of the edaphic fauna the Collembola stand out. They are small arthropods which present great sensitivity to the changes on the physicochemical nature in the environment where they are inserted. The Pampa Biome is a highly diverse grassland domain, poorly protected and sensitive to environmental changes. Thus, in this study ecological indices of Collembola populations were used to identify the impacts of the changes in the conversion of native fields in the Pampa biome into soybean monoculture. The Collembola fauna was compared in nine paired native grasslands areas and soybean sites in four municipalities in the Brazilian state of Rio Grande do Sul, taking into account both the effects of the conversion and the main environmental factors. A matrix data of the specimens was generated for comparison between the areas. A total of 975 individuals were sampled: 359 in the native grassland areas and 616 in the soybean sites. The analyses indicated significant changes in the composition of the communities. While the abundance indices were higher in the soybean areas, the Shannon Diversity Index was higher in the native field areas. No significant differences were observed in richness and Pielou Eveness Index between the studied areas. Regarding environmental variables, the Shannon Diversity Index was positively affected by the variables: elevation, plant richness, plant diversity and richness of non-grass plants. The increase in the population of Collembola may reflect a phenomenon of classical resurgence and would indicate a simplification in trophic chains. The reduction in the number of predators, the changes in the physicochemical characteristics of the soil and a possible resistance of some Collembola to some groups of insecticides could explain this phenomenon.

5
  • ERICA DE SOUZA FALCÃO
  • TAXONOMIC STUDIES OF CHLOROPHYLLUM AND MACROLEPIOTA (AGARICACEAE, BASIDIOMYCOTA) FROM THE BRAZILIAN NORTHEAST

  • Líder : FELIPE WARTCHOW
  • MIEMBROS DE LA BANCA :
  • ALEXANDRE GONÇALVES DOS SANTOS E SILVA FILHO
  • DIRCE LEIMI KOMURA
  • FELIPE WARTCHOW
  • Data: 30-ago-2023


  • Resumen Espectáculo
  • The Agaricaceae family was characterized by having fungi of tricholomatoid or colibioid basidiomes, but mainly pluteoides, with 25 genera distributed in the tribes Leucocoprinae, Agariceae, Lepiotae and Cystodermatae, with a wide continental distribution. However, the concept of the family has changed, including also species of secotioid and gasteroid basidiomata divided into 10 clades, including those comprising the genera Chlorophyllum and Macrolepiota. Chlorophyllum accommodates a species considered poisonous (Chlorophyllum molybdites), while Macrolepiota contains some species appreciated in gastronomy. Studies involving Chlorophyllum and Macrolepiota, despite contributing to a better understanding of species richness, are concentrated in regions such as Australia, Asia, Central and North America, but still little explored in others, such as Brazil. Therefore, the present study aimed to increase the species richness of Chlorophyllum and Macrolepiota in the Northeast region of Brazil. For that, morphological studies were carried out from specimens previously collected and deposited in the herbarium Lauro Pires Xavier – JPB (João Pessoa, Paraíba). In addition, microchemical tests were performed using Melzer's reagent and Cresyl blue in the spores, together with molecular analyzes that used the complete internal transcribed spacers ITS1 and ITS2 and 5.8S rDNA (nuc-ITSrDNA) delimited by the primers ITS1 and ITS4 and the 28S gene rDNA limited by primers LR0R and reverse primer LR7. As a result, two new species are being described (Chlorophyllum sp. nov. and Macrolepiota sp. nov.) for the region. Additionally, a new record for Paraíba of Chlorophyllum molybdites, with identification based on morphological and molecular analysis, is presented, expanding the species richness in Northeast Brazil.

6
  • JULIANE DE CASTRO VALÕES ARAÚJO
  • TAXONOMIC STUDIES ON TYLOPILUS BALLOUI SENSU LATO (BOLETACEAE, BASIDIOMYCOTA) FOR DUNE AREAS AND BOARD AREAS OF THE BRAZILIAN ATLANTIC FOREST

  • Líder : FELIPE WARTCHOW
  • MIEMBROS DE LA BANCA :
  • ALEXANDRE GONÇALVES DOS SANTOS E SILVA FILHO
  • DIRCE LEIMI KOMURA
  • FELIPE WARTCHOW
  • Data: 30-ago-2023


  • Resumen Espectáculo
  • Tylopilus sensu lato is quite diverse within the Boletaceae and, due to the considerable morphological plasticity of the genus, the taxonomic and phylogenetic limits were evaluated in parts, and its infrageneric classification still remains unclear. As an example, we have Tylopilus balloui, originally described for North America and comprising fungi with an orange-toned cap, white to cream to yellow pores that turn brown to the touch, and a stipe with yellowish tones. Because the works are fragmented and with little abrangent about the genus, reanalysis using, in addition to morphology, molecular tools is necessary. The objective of this work is to analyze the species richness of T. balloui sensu lato collected in the states of Paraíba and Rio Grande do Norte and to interpret which morphological characteristics can be used in the delimitation of cryptic species for a better understanding of this group. For this study, six specimens were studied, two belonging to specimens collected in the Parque Estadual das Dunas do Natal and the other four in the REBio Guaribas (area of SEMA II), which are conservation units considered areas of coastal plains and tableland forests. Morphological and phylogenetic analyzes followed the traditional methodology for macrofungi. After ITS analysis, T. dunensis was identified, constituting a new record for Paraíba. Additionally, two new species will be proposed. One of these species might be considered as semi-cryptic with sympatric speciation with T. dunensis. The another is a well-delimited new taxon based on phylogenetic and morphological evidence. Thus, we describe two additional taxa of Tylopilus from ‘tabuleiro’ forest in the state of Paraíba.

7
  • JOZENILDA FRANCINILMA DA COSTA
  • CYTOGENETIC PATTERNS IN REPRESENTATIVES OF TWO COMPLEXES OF FISH SPECIES OCCURRING IN NEOTROPICAL SEMI-ARID ECOSYSTEMS: ASTYANAX BIMACULATUS (CHARACIDAE) AND GYMNOTUS CARAPO (GYMNOTIDAE)

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • LEONARDO LUIZ CALADO
  • PAULO AUGUSTO DE LIMA FILHO
  • RODRIGO XAVIER SOARES
  • Data: 24-nov-2023


  • Resumen Espectáculo
  • Cytogenetic data from Neotropical fish have revealed numerous cryptic speciation processes, in allopatry, with particular emphasis on species with wide geographic distribution belonging to the Orders Characiformes and Gymnotiformes. Aiming to analyze possible cryptic diversifications in members of these clades in the Eastern Northeast Atlantic Basin, cytogenetic analyzes were carried out using Giemsa staining, Ag-RONs technique and C-banding, in Astyanax bimaculatus (Characidae) and Gymnotus carapo (Gymnotidae) from the river Pium (Parnamirim, Rio Grande do Norte), which integrate two recognized species complexes. Astyanax bimaculatus exhibited 2n=50 chromosomes (8sm+14sm+18st+10a; NF=90) and G. carapo, 2n=44 chromosomes (12m+8sm+8st+16a; NF= 72). Heterochromatin in both species is distributed in the terminal and centromeric regions of the chromosomes. The Ag-RONs sites are simple, located in the short arms, respectively, of pairs 16 (submetacentric) and 8 (subtelocentric) of the species. The karyotypic patterns of “A. bimaculatus” and “G. carapo” from the Pium River, differ significantly, in terms of diploid number and karyotypic formula, from other populations of these species from other Brazilian river basins. The cytogenetic data reveal an unsuspected cryptic diversity and extend the phylogenetic extent of these species complexes to the Eastern Northeast Atlantic Basin.

8
  • OLYANA DA SILVA FURTADO
  • COMPARATIVE ECOLOGY AND ECOMORPHOLOGY OF SPECIES OF GYMNODACTYLUS (SQUAMATA: PHYLLODACTYLIDAE) IN ATLANTIC FOREST AND CAATINGA AREAS OF THE SEPTENTRIONAL REGION FROM NORTHEAST BRAZIL

     

  • Líder : ELIZA MARIA XAVIER FREIRE
  • MIEMBROS DE LA BANCA :
  • ELIZA MARIA XAVIER FREIRE
  • PEDRO MURILO SALES NUNES
  • ROBSON WALDEMAR ÁVILA
  • Data: 24-nov-2023


  • Resumen Espectáculo
  • The genus Gymnodactylus is endemic to Brazil and currently comprises five species, two of which are recorded for the state of Rio Grande do Norte, Gymnodactylus geckoides, predominant in the Caatinga, and Gymnodactylus sp. nov., endemic to the northeastern Atlantic Forest. In some areas of the Brazilian Northeast, such as the dune and restinga ecosystems of the Atlantic Domain in Rio Grande do Norte, these species occur in sympatry, which makes it important to know how they coexist and/or segregate their ecological niches, compared to the use of these niches in areas where only one of these species occurs. In this sense, the feeding ecology and habitat use of G. geckoides and Gymnodactylus sp. nov. were analyzed in two areas of the Atlantic Forest Domain and one of Caatinga. In one of the Atlantic Forest areas (Parque Estadual Dunas do Natal - PEDN), the species occur in sympatry, while in the other, Area de Proteção Ambiental Jenipabu (APAJ), only G. geckoides occurs, similar to the Caatinga area of Estação Ecológica Seridó (ESEC Seridó). As they use different habitats in these areas, the influence of habitats on the morphology of G. geckoides was analyzed. The specimens were captured manually for analysis of stomach contents, and data about the habitat and microhabitat where they were first sighted were recorded. To find out the diet, 105 stomachs were analyzed, 37 from G. geckoides from ESEC Seridó, 23 from G. geckoides from APAJ, 14 from Gymnodactylus sp. nov. and 31 from G. geckoides from PEDN. For analysis of ecomorphological variation, 10 morphometric variables of G. geckoides populations were used. At ESEC Seridó and APAJ, termites (Isoptera) were the most important prey in the diet of G. geckoides. At PEDN, the diet of G. geckoides was mainly composed of Hemiptera, while for Gymnodactylus sp. nov., Isoptera and Formicidae. Regarding electivity, of the 27 categories of prey available at ESEC Seridó, those preferred by the G. geckoides population were Dermaptera, Diplopoda and Isopoda; the other categories were considered rejected. For the APAJ population, out of 20 available prey categories, Blattodea, Coleoptera, Isoptera, Insect Larvae, Pseudoscorpiones and Scorpiones were preferred; Araneae and Hemiptera were slightly preferred and the others were rejected. For the PEDN, among the 20 available categories, the G. geckoides population demonstrated a preference for Hemiptera, Insect Larvae and Lepidoptera, while Gymnodactylus sp. nov. demonstrated to prefer prey such as Coleoptera, Dermaptera, Diptera and Isoptera. A high level of overlap in terms of food niche and total segregation in the spatial niche was found between the two species in sympatry in the PEDN: Gymnodactylus sp. nov. it inhabits areas of high forest and low forest, while G. geckoides was restricted to open areas of beach dunes. The population of G. geckoides in APAJ was recorded in restinga vegetation and in anthropic areas, while in ESEC Seridó, arboreal-shrub vegetation and rocky outcrops were the most used habitats. Due to their restricted occurrence in soil-associated microhabitats, both species were considered terrestrial, but, in sympatry, they segregate in terms of habitat use. Morphological variations were found between populations of G. geckoides from the Caatinga and the Atlantic Forest; for PEDN and APAJ, the morphometric profiles demonstrated similarity. The hind limbs of Atlantic Forest populations are more elongated than those of the Caatinga, demonstrating that the habitat used by the species influences their morphology.

     

Tesis
1
  • CLÉCIO DANILO DIAS DA SILVA
  • Ecology and Taxonomy of Collembola (Arthropoda: Hexapoda) in the Brazilian Pampa

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • GABRIEL COSTA QUEIROZ
  • KAUANE MAIARA BORDIN
  • NERIVÂNIA NUNES GODEIRO
  • RENATA ANTONACI GAMA
  • Data: 31-ago-2023


  • Resumen Espectáculo
  • Springtails are microarthropods widely distributed in all terrestrial ecosystems, and they play a fundamental role in ecosystem functioning. However, studies focused in these animals in the South Hemisphere are limited and there are gaps to various phytogeographical domains, such as the South American Pampa. This domain is mainly composed by native grasslands, which harbor a great biodiversity of fauna and flora. The native grasslands are rapidly disappearing to make way for extensive livestock farming and Eucalyptus plantations, raising concerns about conservation in South America, especially in Brazil. In light of this, the main objective of this thesis was to assess the effects of different land uses on the taxonomic composition, functional diversity, and ecological properties of Collembola (Arthropoda: Hexapoda) communities in the Brazilian Pampa. Four municipalities in the state of Rio Grande do Sul (RS) with areas of native grasslands and Eucalyptus plantations were sampled: Pinheiro Machado, Jaguarão, Lavras do Sul, and São Gabriel. Springtails were collected using pitfall traps and Berlese funnels in 10 paired areas, each with a 250 m transect for each type of land use, divided into 5 subplots. In the laboratory, the specimens were sorted, quantified, morphotyped, mounted on slides for microscopy and identified with the help of keys and other specialized literature. The new species was illustrated using an optical microscope with an attached camera and then vectorized. Ecological analyses of taxonomic and functional diversity were performed using R software. In Chapter 1, we evaluated the taxonomic composition, alpha and beta diversity of springtails after the conversion of native grasslands into Eucalyptus plantations. We used Random Forest analysis to understand the influence of environmental factors on the structure and composition of the communities. We found significant losses in the springtail communities concerning abundance, species composition, richness, and taxonomic diversity after the conversion of the areas. Beta diversity was mainly explained by species turnover, while plant richness and dominance influenced springtail diversity. In Chapter 2, we assessed the effects of converting native grasslands into Eucalyptus plantations on the functional diversity and composition of epigeic and endogeic springtail communities. We categorized each morphospecies by their life form using an ecomorphological index. The results indicate that epigeic communities are more associated with grassland areas, while endogeic communities are more associated with Eucalyptus plantations. The reforestation with Eucalyptus did not affect the functional indices of epigeic communities, but had negative effects on the richness and functional divergence of endogeic communities, resulting in a reduction of body pigmentation, number of ocelli, leg size, and appendages size of these animals. In Chapter 3, we reevaluated the identification and inventory records from the first chapter and conducted a literature review using different databases and articles. By cross-referencing these data, we provided a list of 15 families, 35 genera, and three nominal species recorded for the Pampa. We also developed diagnoses and an identification key for the suprageneric taxa present in this domain. In Chapter 4, we described and illustrated the first species of Dicranocentrus Schött for Rio Grande do Sul and the Brazilian Pampa domain. The new species belongs to the gracilis-group sensu Mari-Mutt. Dicranocentrus sp. nov. is unique within the genus by antennal segments Ib and IIb ventrally with two smooth pointed chaetae each; labium with scales, and chaeta M1 ciliated while the rest are smooth (m2, r, a1, a2, l1, and l2); tenent hair capitate; manubrial plate with 13 ciliated chaetae and nine pseudopores, and ventro-apical region of the manubrium with two ciliated chaetae. Lastly, we present a comparative table that encompasses all Dicranocentrus species from the gracilis-group worldwide. The results presented in this thesis provide unprecedented contributions to the taxonomy, ecology, and conservation knowledge of springtails in the Brazilian Pampa. They emphasize the importance of in-depth studies on the influence of land-use practices on the biodiversity of these communities. The conservation of native grasslands and the adoption of sustainable practices in Eucalyptus plantations are crucial for maintaining the diversity of these animals and, consequently, the ecological balance of the Pampa domain.

2
  • MATEUS GERMANO SOUZA LIRA
  • Phylogeography and Ecological Niche Modeling of non-annual rivulids of the genus Kryptolebias Costa (Cyprinodontiformes) in neotropical mangroves

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • PABLO RIUL
  • ALEX BARBOSA DE MORAES
  • ANDERSON VILASBOAS DE VASCONCELLOS
  • FLÁVIA DE FIGUEIREDO PETEAN
  • Data: 05-sep-2023


  • Resumen Espectáculo
  • Kryptolebias is a genus of non-annual fish of the Rivulidae family, its representatives inhabiting diverse microhabitats, ranging from small streams and coastal freshwater marshes to mangroves. Freshwater species that are endemic to South America have a restricted geographic distribution, including critically endangered species. On the other hand, estuarine representatives have a wide geographic distribution, with the species of the K. marmoratus complex (K. marmoratus and K. hermaphroditus) occurring from Florida, in the United States, to São Paulo in Brazil and K. ocellatus occurring from Rio from January to Santa Catarina. These species overlap throughout their total range with K. marmoratus overlapping with K. hermaphroditus in the western North Atlantic in localities of San Salvador and Cuba, just as K. ocellatus overlaps with K. hermaphroditus in areas of mangroves in Rio de Janeiro, Brazil. Historically, mangrove Kryptolebias faced taxonomic problems, with inconsistencies between molecular and morphological data. However, with advances in genetic studies with the group, a greater understanding of the limits of distribution between lineages and genetic structure has emerged. In Brazil, initially the species of the genus Kryptolebias were only known from the southeast region, having purely descriptive works. However, records in the north and northeast, which included the first male of K. hermaphroditus in a Brazilian locality, in addition to the possible occurrence of K. marmoratus in the northeast, raised questions about the real distribution of the genus in the mangroves of the Western Atlantic. Phylogeographic studies suggested different lineages occurring in the K. marmoratus complex, but with large gaps in genetic information and distribution throughout South America. Therefore, a project with national and international partnerships was necessary, in order to investigate the distribution and history natural species of the genus Kryptolebias. Based on this, the objectives of this work are to indicate the current distribution for Kryptolebias species from mangroves on the Brazilian coast, with a phylogeographic approach, indicating the genetic structure along the distribution. In addition to testing, based on ecological niche models, whether climate changes after the last glacial maximum, mainly the increase in temperature, promoted the expansion of the distribution of K. hermaphroditus. The results indicate 14 new records covering 5,434 km of the braziliam coast, expanding the limits of distribution of the Central and Southern clade clade (K. hermaphroditus). An evident genetic structure is observed in the populations of the Caribbean, Bonaire and Aruba, with the population of northeastern Brazil demonstrating a probable population expansion. In contrast, the southeastern population of K. hermaphroditus shares a single mitochondrial haplotype, an indication of recent colonization. The distribution models of indicate a probable expansion of K. hermaphroditus, where the Middle Holocene demonstrated a larger area of habitat suitability than the current scenario. The same is observed in K. ocellatus appears to have a loss of suitability at present, in relation to paleoclimatic scenarios. Despite the overlapping distribution between K. hermaphroditus and K. ocellatus in southeastern Brazil, the results of environmental niche overlap did not show significant values.

3
  • NATHALIA MENDONÇA DE ASSIS
  • GASTEROID FUNGI (BASIDIOMYCOTA) IN THE AMAZON FOREST: TAXONOMY AND ECOLOGICAL MODELING

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • ALEXANDRE GONÇALVES DOS SANTOS E SILVA FILHO
  • GISLAINE CRISTINA DE SOUZA MELANDA
  • RENATO JUCIANO FERREIRA
  • TIARA SOUSA CABRAL
  • Data: 26-sep-2023


  • Resumen Espectáculo
  • Biodiversity has faced numerous challenges due to human activities. Habitat degradation, along with the worsening of climate change, illustrates the impacts of these actions. Gasteroid fungi, a cosmopolitan group of organisms with great diversity, are subject, like fungi in general, to the same threats that affect animals and plants due to these factors. The objective of this study was to conduct a diagnosis of current knowledge about gasteroid fungi in the Amazon Rainforest through a literature review and consultation of specialized databases, as well as to model the potential geographic distribution of three gasteroid fungi species (Geastrum echinulatum, Geastrum entomophilum, and Staheliomyces sinctus) for the present and future in two distinct climatic scenarios. Additionally, using three different algorithms (MXS, SVM, and RF), important environmental variables influencing species distribution were analyzed. The literature checklist published up to the year 2023 confirmed the occurrence of 83 species distributed across 22 genera, eight families, and four orders. The most representative genus was Geastrum, followed by Cyathus, Lycoperdon, and Phallus. We present an identification key for gasteroid fungi genera in the Amazon and a distribution map of the records. In the potential distribution models, the species S. cinctus performed the best in the analyzed metrics, and the Random Forest (RF) algorithm demonstrated the best overall performance for most species, with precipitation and temperature-related variables being the most influential in species distribution. In the distribution maps generated for the current scenario, the species G. echinulatum and S. cinctus showed broad suitability for much of the Amazonian domain. On the other hand, the species G. entomophilum exhibited more restricted suitability. Future models predict a reduction in suitable areas for these species compared to current distribution models. This process of climate suitability loss occurs even in the optimistic climate change scenario.

2022
Disertaciones
1
  • MARIANA BESSA DE QUEIROZ
  • Diversity of Arbuscular Mycorrhizal Fungi (Glomeromycota) in lentic and lotic aquatic ecosystems of Rio Grande do Norte, Brazil

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • FRANCISCO ADRIANO DE SOUZA
  • ROSILAINE CARRENHO
  • Data: 23-feb-2022


  • Resumen Espectáculo
  • Arbuscular Mycorrhizal Fungi (AMF) are symbiotic microorganisms from terrestrial and aquatic plant roots. However, lentic and lotic aquatic ecosystems are little explored regarding their occurrence and ecology. Few diversity inventories have documented more than 100 species and ecological studies have tested the influence of
    environmental variables on the degree of root colonisation, but the structure of AMF communities under these two conditions and the influence of environmental variables is poorly known. This work objective was to make an inventory of the AMF species in two lentic environments (Carcará and Arituba Lagoons) and two lotic environments (Boa Cica Stream and Pium River) in the municipality of Nísia Floresta, Rio Grande do Norte, Brazil, and evaluate the influence of water and seasonal parameters on species composition, diversity, richness, and sporulation. For this purpose, two samples were taken in the dry (December 2016) and wet (July 2017) periods, removing rhizospheric soils of different species of macrophytes inhabiting depths from 0.02 to 2.72 m. Glomerospores were extracted from 50 g of soil and mounted on slides for taxonomic identification. Species were evaluated for occurrence frequency and relative abundance, being later classified as dominant, common, and rare. Differences in the species composition were tested by Cluster Analysis, ANOSIM, and SIMPER. Diversity was evaluated among different conditions and seasons using rarefaction curves interpolated and extrapolated to Hill numbers. Richness and sporulation were tested in relation to conditions, seasons, and depth by Generalized Linear Models and ANOVA. Eighty-eight species were identified and classified in 5 orders, 11 families, and 21 genera. Sixty-one species occurred in the lentic condition (57 in the Arituba Lagoon and 24 in the Carcará Lagoon) and 55 in the lotic condition (39 in the Boa Cica Stream and 31 in the Pium River). Seventeen species were shared among the four sites. Glomeraceae and Acaulosporaceae were the most representative families in species richness in all lentic and lotic interactions and species abundance in lotic interactions, while the Ambisporaceae family showed high abundance in lentic interactions. Species composition differed significantly between lentic and lotic interactions. Greater Shannon and Simpson diversity were found in the Arituba/Dry interaction to the detriment of lower diversity in Boa Cica/Dry. Lotic interactions did not differ in species richness and glomerospores density but were significantly different from lentic interactions in species richness. The lentic interactions, on the other hand, differentiate among themselves, in higher richness and sporulation found in Arituba Lagoon, which also showed the highest nutrient concentration in sediment. There was a decrease in richness and glomerospores density caused by a depth gradient increase only in Arituba Lagoon; it is possibly related to a mesotrophic trait of this lagoon. This work results bespeak these aquatic ecosystems potencial in harboring high richness of AMF species and suggest that communities composition and species richness are influenced by lentic and lotic condition and also that richness and sporulation vary among lentic environments with different trophic status.

2
  • GLEYCE MEDEIROS DA SILVA
  • A REVIEW OF RICHARDSITAS BETSCH AND TEMERITAS RICHARDS (COLLEMBOLA, SMINTHURIDAE)

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • RENATA ANTONACI GAMA
  • RUDY CAMILO NUNES
  • Data: 25-mar-2022


  • Resumen Espectáculo
  • The Sminthurinae holds 18 genera, including extinct and extant genera. Among them, Richardsitas Betsch, Temeritas Richards, Galeriella Curcic & Lucic and Keratosminthurus Zeppelini are remarkably similar to each other especially due to their long antennae (antenna IV with 18 or more subsegments), metatrochanteral spine present and a similar ventro-dental chaetotaxy. But between these genera, Temeritas and Richardsitas possibly are the most similar and close related to each other. Due to this similarity, we performed a bibliographic review of Richardsitas and Temeritas in order to better circumscribe their genera and species diagnoses. We also present a description of a new species of Richardsitas (R. subferoleum sp nov. from Australia), a table and a comparative key for the Sminthurinae genera, tables and comparative keys for the species of Temeritas and Richardsitas as well as an updated diagnoses for both genera.

3
  • MIGUEL DORCINO XAVIER
  • TAXONOMIC REVIEW ON THE SPECIES OF PANAEOLUS SENSU LATO (AGARICALES, BASIDIOMYCOTA) FOR THE NORTH AND NORTHEAST OF BRAZIL

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • FELIPE WARTCHOW
  • ALEXANDRE GONÇALVES DOS SANTOS E SILVA FILHO
  • Data: 19-abr-2022


  • Resumen Espectáculo
  • Panaeolus (Fr.) Quél is a psychoactive mushroom genus, distributed worldwide, commonly found in meadows, grasslands, gardens or in dung of herbivores. In Brazil, its species are poorly cited in the taxonomic literature, especially for the North and Northeast regions. This dissertation concerns the taxonomy of Panaeolus sensu lato and more specifically reviews the identification of excicata from the fungal collections: INPA, JPB, UFACPZ, UFRN-FUNGOS and URM. Thus, aiming to obtain a descriptive knowledge of these individuals (semaphores) of Panaeolus s.l. and explain their relationships of morphological similarities and differences through comparisons with the taxonomic system and type descriptions. The materials obtained as loans were described by the preparation of slides from dried fungal tissues, rehydrated in 5% KOH solution, or stained in Congo Red, which were then observed under a microscope. It was possible to identify a total of eight species and one variety (P. papilionaceus var. parvisporus Ew. Gerhardt), two of them, proposed as new species for science, based on materials collected in Acre, northern region of the country. The new records of species described here demonstrate that there may be an endemic diversity of the genus in new and unexplored habitats, such as the Amazon region. The information generated here aims to contribute to the taxonomy of the genus in Brazil, facilitating future phylogenetic systematics studies that integrate morphological and molecular data in order to resolve the controversies here discussed.

4
  • MARSÍLIO SECUNDO PEREIRA DA ROCHA
  • CYTOGENOMIC DIVERGENCE IN DAMSELFISHES OF THE GENUS Stegastes Jenyns, 1840 (POMACENTRIDAE) FROM THE ATLANTIC: INTER AND INTRASPECIFIC VARIATION AND HYBRID ZONE ANALYSIS

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • KARLLA DANIELLE JORGE AMORIM
  • Data: 22-jul-2022
    Ata de defesa assinada:


  • Resumen Espectáculo
  • Pomacentridae (damselfishes) constitute an extremely diverse and abundant group of fishes in rocky areas and coral reefs of tropical and subtropical oceanic regions. In the western South Atlantic, the genus Stegastes is the most representative. Variations in coloration and overlapping meristic characters make the taxonomy of the Atlantic species of this genus in some cases imprecise. In this regard, the taxonomic status, and relationships of insular nominal forms, such as S. rocasensis, S. sanctipauli, and S. fuscus trindadensis, have received increasing attention. Previous cytogenetic data for Stegastes, have indicated remarkable structural karyotypic variation. However, population cytogenetic comparisons, aspects of the organization of repetitive sequences of chromosomes, which can help in understanding the taxonomy and phylogenetic relationships of these species, are still incipient. Thus, in the current study, we performed population and interspecific cytogenetic analyses, including the patterns of rDNA sequence organization, of Stegastes species endemic to the Western Atlantic coast, Atol das Rocas (AR), and the regions of São Pedro e São Paulo Archipelagos (SPSPA) and Trindade Island (TI). Additionally, the karyotypic patterns of S. fuscus and S. variabilis were investigated in a probable hybridization zone on the coast of Rio Grande do Norte, Northeast region of Brazil. The species presented 2n=48, with high NC values (chromosome arms; 88-90). Heterochromatin showed similar interspecific distribution, with conspicuous blocks in the centromeric and pericentromeric regions. The Ag-RONs loci are unique, except for S. variabilis, which showed multiple sites. Samples of S. rocasensis from AR and SPSPA (previously S. sanctipauli), showed similar karyotypes and rDNA site arrangements. Stegastes fuscus from TI showed a syntenic arrangement of the 18S and 5S rDNA sites, in contrast to the S. fuscus population from the coast, whose sites occur on different chromosomes. This conspicuous karyotypic variation indicates an Evolutionarily Significant Unit (ESU) status for this island population. Stegastes variabilis showed transcriptionally active 18S and 5S syntenic rDNA arrangements, demonstrating that such organization does not impede its gene functionality. Added to molecular and morphological data, S. rocasensis/S. sanctipauli also share the same cytogenetic patterns, supporting that it is the same species. Population analyses of S. variabilis and S. fuscus in a hybridization zone did not reveal intermediate karyotypes, suggesting that hybridization in this region may be sporadic, rare, or time-limited events. Karyotypic evolution in Stegastes revealed conspicuous differentiation, with clear cytotaxonomic distinctiveness, markedly shaped by multiple pericentric inversions. Analyses of the dynamics of repetitive sequences in these species will contribute to elucidating the high level of chromosomal differentiation in this group of reef fishes.

5
  • NATHALIA KALUANA RODRIGUES DA COSTA
  • Phylogeography of the Endecous potiguar cricket Castro-Souza, Zefa & Ferreira, 2017 (Orthoptera, Phalangopsidae): Investigation of cryptic lineages in caves in the Jandaíra formation

  • Líder : ADRIAN ANTONIO GARDA
  • MIEMBROS DE LA BANCA :
  • ADRIAN ANTONIO GARDA
  • THAIS GIOVANNINI PELLEGRINI
  • FELIPE CAMURUGI ALMEIDA GUIMARÃES
  • Data: 30-ago-2022


  • Resumen Espectáculo
  • Cave crickets of the Phalangopsidae family are poorly studied and have low dispersal capacity and wide distribution, which make them interesting for phylogenetic and phylogeographic investigations. Within this family is the genus Endecous, which has been subdivided into three subgenera based on morphological characters and has most of its type localities in caves. Currently, all taxonomic research involving the genus uses morphological, bioacoustic and cytogenetic characters. Here, we reconstruct the phylogeny and phylogeography of E. potiguar Castro-Souza, Zefa & Ferreira, 2017 based on 151 partial sequences of the COX-1 gene with 571 bp for 21 different localities. Molecular phylogenies were reconstructed using Bayesian inference and Maximum Likelihood, and three approaches (ABGD, PTP and GMYC) were used for lineage delimitation. A Bayesian Analysis of Population Structure was performed using BAPS. Additionally, some specimens were selected for extraction of the phallic complex and analysis of morphological characters based on the description article (Castro-Souza, Zefa & Ferreira, 2017). Some acoustic samples were also used for analysis. The Bayesian analysis suggested two clades, here treated as two possible species, which was supported by two of the three delimitation analyses, except for the PTP that followed the division made by Maximum Likelihood into three clades. The divergence time estimate suggests that this speciation occurred 7.40 Ma (95% HPD 13.80-3.75 Ma) ago. The initial divergence between the species is possibly correlated with a mechanism of vicariance after the emergence of the channel that would give rise to the Apodi-Mossoró River, in the period between the Miocene and the Quaternary. With the decrease in humidity, these species would have dispersed to caves with recent divergence times between the groups. We observed a morphological stasis, perhaps the result of a stabilizing selection due to niche conservatism.

Tesis
1
  • ARTHUR DE SOUZA SOARES
  • Systematics and conservation of Oocephalus (Benth.) Harley & J.F.B.Pastore (Hyptidinae), Lamiaceae

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • JULIANA GASTALDELLO RANDO
  • GUILHERME DE MEDEIROS ANTAR
  • JEFFERSON GUEDES DE CARVALHO SOBRINHO
  • MARCELO TROVÓ LOPES DE OLIVEIRA
  • Data: 29-jul-2022


  • Resumen Espectáculo
  • The genus Oocephalus belongs to the subtribe Hyptidinae, family Lamiaceae, and currently comprises 22 species, 21 of which are endemic to the Brazilian campo rupestre. The genus species can be recognized for having a shrub or subshrub habit, aromatic, thyroid, short or elongated inflorescence, composed of pedunculate or sessile cymes, forming a simple or a compound dichasial cymes (or reduced to a single flower), ovoid and commonly enveloped by an involucrum of bracteoles, calyx tubular or infundibuliform, lobes deltate, ensiform, lanceolate or subulate, sinus between them obdeltate, corolla with an elongated tube and short lobes, these never marked with dots or lines. This thesis presents a nuclear phylogeny of Oocephalus using the Next Generation Sequencing (NGS) methodology, with the Angiosperms353 kit; a taxonomic review of the genus, with morphological descriptions, taxonomic and ecological comments about the species; and an analysis of the genus distribution patterns, identifying areas with high species richness and endemism, evaluating the conservation status of the species. Phylogenetic analyzes recovered the genus as monophyletic, with species grouped into four distinct clades. The taxonomic review recognizes 24 species of Oocephalus and classifies them into four sections, previously recognized as clades in phylogenetic analyses. The analyzes also showed that the Oocephalus species have four distinct patterns of distribution and present a high risk of extinction, with 22 of the 24 species being classified in some group of threatened species. The results of this thesis show that Oocephalus can be use as model to test hypotheses about diversification and evolution in rupestrian fields, as it is a genus almost entirely endemic to these areas and, also, an important tool to assist in the conservation policies of the campos rupestres.

2
  • ANA PAULA ALVES DA SILVA
  • PHYLOGENETIC SYSTEMATIC AND BIOGEOGRAPHY OF RHIPSALIDEAE DC. (CACTACEAE JUSS.)

  • Líder : ALICE DE MORAES CALVENTE
  • MIEMBROS DE LA BANCA :
  • ALICE DE MORAES CALVENTE
  • LEONARDO DE MELO VERSIEUX
  • GABRIEL DAMASCO DO VALE
  • DIEGO RAFAEL GONZAGA
  • LUIZA FONSECA AMORIM DE PAULA
  • Data: 31-ago-2022


  • Resumen Espectáculo
  • Rhipsalideae includes the majority of epiphytic cacti, distributed mostly in South America. Currently, it comprises 62 species distributed in five genera, with a center of diversity in eastern Brazil, inhabiting mainly the Brazilian Atlantic Forest. However, the generic and subgeneric delimitations of the group and the knowledge of divergence times and about the diversification of the tribe is still incipient. Thus, this work aimed to present a consensual hypothesis for the phylogeny of Rhipsalideae and to investigate the biogeographic history and evolutionary aspects of the tribe. In the first chapter, biodiversity patterns were investigated and a bioregionalization scheme was proposed for Cactaceae in the Neotropical region based on occurrence data from public databases to produce a comparative framework for subsequent biogeographic analyses carried out in the other chapters. We concluded that the three main centers of diversity of the family are in Mexico, in the Andean region and in Eastern Brazil. Our analyses produced an original bioregionalization scheme for cacti, which was used as a backbone for exploring aspects of patterns and processes underlying the biogeographic history and diversification of Rhipsalideae (chapter 3). In the second chapter, the dated phylogeny of Rhipsalideae was reconstructed using DNA sequence data available in Genbank. The tribe was confirmed as monophyletic and two main clades were recovered, the first including Rhipsalis and the second including Hatiora, Lepismium, Rhipsalidopsis and Schlumbergera. The origin of the tribe dates back to the Miocene, as well as for the genera Schlumbergera, Hatiora and Lepismium. Rhipsalis dates from the Pliocene and the extant species diversified more recently, during the Pleistocene. Finally, patterns of distribution, richness and endemism of Rhipsalideae were identified and the evolutionary biogeography of the tribe was investigated in chapter 3. Three patterns of geographic distribution were outlined: intercontinental disjunct, restricted to the humid forests of southern Central America and northern South America and restricted to South America. The areas with the greatest richness, phylogenetic diversity and endemism of the tribe are in the Atlantic Forest, in eastern Brazil, where the tribe originated.

3
  • JULIANA APARECIDA SOUZA LEROY
  • Arbuscular mycorrhizal fungi associated with aquatic macrophytes and macroalgae of the genus Chara in tropical Rivers in Brazil

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • PATRÍCIA OLIVEIRA FIUZA
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • CAMILA PINHEIRO NOBRE
  • FRANCISCO ADRIANO DE SOUZA
  • Data: 31-ago-2022
    Ata de defesa assinada:


  • Resumen Espectáculo
  • Studies on the symbiose between arbuscular mycorrhizal fungi (AMF) and roots of aquatic macrophytes are recent, where the diversity and ecological role of these fungi in wetlands remains poorly understood. Most of the work focuses on the terrestrial environment, creating a gap in the understanding of the role of AMF, especially in hosts whose roots are constantly submerged. In this study, the presence of mycorrhizal colonization in roots of submerged and floating macrophytes was evaluated, also analyzing the sediment of the rhizosphere of the hosts, including macroalgae of the genus Chara, in tropical lotic environments. Thus, the study was divided into two stages. The first step was to evaluate the presence of AMF in macroalgae of the genus Chara. For this, the presence of colonization in algal rhizoids in five different lotic environments in Brazil was investigated, also evaluating the presence of spores in the rhizosphere. Twenty-five species were found in the rhizosphere of Chara sp., belonging mainly to the families Acaulosporaceae (11) and Glomeraceae (8). The rivers showed low species richness with Rio do Gozo (16), followed by Uma (8), Pratinha (2), Cuitegí (2) and Pandeiros (1). Despite the occurrence of AMF spores in the aquatic sediment, there is no mycorrhizal colonization in the rhizoids of Chara sp. for the analyzed field conditions. In the second stage, AMF colonization was investigated in 61 aquatic macrophytes of the biological types submerged fixed, fixed floating and free floating, which are in permanent contact with water, in nine rivers in the state of Rio Grande do Norte. Of the investigated hosts (61) 15 species showed colonization by AMF (24.5%). The macrophytes studied from the Rivers Trairí, Doce, Brandão and Piranhas did not show colonization by AMF, whereas the Rivers Catu, Pitimbú and Pium had colonization by AMF greater than 50%. Colonization by AMF was reported for the first time in 6 of the 15 colonized macrophytes. The species that showed the highest colonization rate were Nymphoides humboldtiana (92%) and Bacopa aquatica (75%). Regarding colonization and colonization by life form, the submerged macrophyte species studied showed 52% colonization by AMF, while the fixed floating 18% and the free floating only 8%. A total of 43 species were recovered from the aquatic sediments of the nine rivers of RN, where the most representative families were Glomeraceae (33.3%) and Acaulosporaceae (31%). The largest number of species was recovered from the Pium River (17), followed by Piranha (14) and Catu (12). Regarding the comparison between the AMF communities and the rivers, it suggests that the AMF communities of the Pium and Piranha rivers are more similar, as are the communities of the Doce and Trairi rivers and the rivers and the Catu and Boa Cica rivers. The composition of AMF communities did not differ when tested in relation to biological types of hosts and interaction between habits and rivers. AMF species richness was highest in fixed floating macrophytes (29), followed by fixed submerged (28) and free floating (11). The greatest diversity of AMF species was observed in the rhizosphere sediment of fixed floating macrophytes, despite the low colonization rate. The results of this study confirm the presence of AMF colonization in vascular aquatic macrophytes and the absence of it in macroalgae (Chara) in lotic environments, where the aquatic sediment harbors a remarkable richness that deserves more attention. Additional studies are essential to better understand the role of AMF in aquatic environments.

4
  • SAMARA SILVA DE MATOS AQUINO
  • Taxonomy of Neptunia Lour. (Caesalpinioideae) in the Americas and environmental education with Leguminosae in the Caatinga dry forest

  • Líder : LEONARDO DE MELO VERSIEUX
  • MIEMBROS DE LA BANCA :
  • LEONARDO DE MELO VERSIEUX
  • RUBENS TEIXEIRA DE QUEIROZ
  • ANNELISE FRAZÃO NUNES
  • MARIA MARGARIDA DA ROCHA FIUZA DE MELO
  • MARLI PIRES MORIM
  • Data: 31-ago-2022


  • Resumen Espectáculo
  • Neptunia Lour. (Leguminosae-Caesalpinioideae) has a pantropical distribution with near 12 species. It is characterized by the heteromorphic inflorescences and yellow petaloid staminodes, often associated with flooded environments. Revisional studies for Neptunia date back over 50 years, demonstrating the need for taxonomic and nomenclatural updates, since the taxa present cryptic and polymorphic characters, leading to imprecisions in identifications, and consequently, cascading failure. The objectives of this thesis are: (1) to perform a classical taxonomic revision and morphological characterization of Neptunia in the Americas and (2) to develop an environmental education program, focused on the Leguminosae family, for the visitors and seed collectors in the Assú National Forest. For the 1st objective, collections were made following the usual methodology, as well as analysis in national and international herbaria. For the Americas, five species were revised, with comments, identification key, distribution data and illustrations. To clarify the nomenclatural history of the genus, we assigned lectotypes to six names: Neptunia depauperataN. tenuisN. pubescensN. mazatlanaN. pubescens var. microcarpa and N. palmeri. and synonymization of N. amplexicaulis f. richmondii and N. gracilis f. glandulosa under N. amplexicaulis and N. gracilis, respectively. The proposal for environmental education aimed at valuing the flora of the caatinga, through the identification of trees, mainly Legumes, 92 individuals were marked and identified in the field, of which 13 species and 34 individuals of Leguminosae, and 58 individuals and 21 species belong to the families Anacardiaceae, Apocynaceae, Bignoniaceae, Bixaceae, Boraginaceae, Burseraceae, Cactaceae, Capparaceae, Combretaceae, Chrysobalanaceae, Euphorbiaceae, Malvaceae and Rhamnaceae. Educational signs about legumes and other species were developed and two options of trails were mapped, serving both students and researchers and parataxonomists. It is concluded that the present work has advanced the knowledge about Legumes and Neptunia, contributing to an increase in collections and a deepening of the knowledge of the taxonomy of the genus. Also, we could implement, in practice, strategies to combat plant blindness and to popularize science, promoting the caatinga’s flora.

5
  • RENAN DE LIMA OLIVEIRA
  • Morphological and Molecular Studies of Gasteroid Fungi (Basidiomycota) from Northeast Brazil

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • ALEXANDRE GONÇALVES DOS SANTOS E SILVA FILHO
  • IURI GOULART BASEIA
  • JULIETH DE OLIVEIRA SOUSA
  • PAULO SERGIO MARINHO LUCIO
  • RUY ANDERSON ARAÚJO DE LIMA
  • Data: 26-dic-2022


  • Resumen Espectáculo
  • Gasteroid fungi constitute several lineages of basidiomycetes characterized by passive dispersal of basidiospores; Basidiospore maturation occurs within the fruiting body and protected by an outer layer called the peridium. The first record with gasteroid fungi in Brazil was around the end of the 18th century by university student José Marianno da Conceição Vellozo. However, only at the beginning of the 21st century is there a considerable increase in studies of gasteroid fungi in Brazil, with emphasis on work with fungi from the northeast region. The general objective of the study proposed here is to expand the taxonomic knowledge of these fungi, currently included in Agaricomycetidae and Phallomycetidae, providing morphological and molecular data when possible from species collected in areas of northeastern Brazil. For this, field expeditions were carried out in areas of northeastern Brazil in the months with the highest rainfall: February to July 2019 to 2022. As well as, loans of specimens from the fungary UFRN-fungi were also requested. Macro and microscopic analyzes were carried out at the Laboratory of Biology of Fungi at UFRN. Scanning electron microscopy analyzes were carried out at the Laboratory of the Gas Technology Center (CTGás) – Natal/RN. DNA extractions, amplifications and purification were performed at the Laboratory of Cellular Biology and Plant Genetics of the Department of Cellular Biology and Genetics at UFRN. As a result eight species new to science were designated: Calvatia baixaverdensis R.L. Oliveira, R.J. Ferreira, P.Marinho, M.P. Martín & Baseia sp. nov.; Calvatia nordestina R.L. Oliveira, R.J. Ferreira, P.Marinho, M.P. Martín & Baseia sp. nov.; Cyathus sp. nov. 1; Cyathus sp. nov. two; Cyathus sp. nov. 3.; Geastrum albofibrosum R.L. Oliveira, Dourado-Barbosa, R. Cruz, M.P. Martin & Baseia; Geastrum sp. nov. 1.; Tulostoma orotubulosa Dourado-Barbosa, R.L. Oliveira, A.A. Lima, Baseia & R. Cruz sp. nov. As well as nineteen new records. Molecular analyzes proved to be important and necessary and morphological analyzes fundamental in the description of new records and new species. Efforts like these surveys are necessary, as well as the expansion of knowledge of gasteroid fungi in the northeast region,
    enabling an increase in the conservation of these species.

2021
Disertaciones
1
  • PAOLLA GABRYELLE CAVALCANTE DE SOUZA
  • A REVISION OF TROGOLAPHYSA MILLS, 1938 (COLLEMBOLA, ENTOMOBRYOMORPHA, PARONELLIDAE) WITH THE DESCRIPTION OF NEW SPECIES FROM CAVES OF THE CAATINGA DOMAIN, BRAZIL

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • ANAMARIA DAL MOLIN
  • RUDY CAMILO NUNES
  • Data: 26-feb-2021


  • Resumen Espectáculo
  • Trogolaphysa Mills (Paronellidae) is widely distributed in tropical regions, with 65 species described worldwide. Neotropical species of Trogolaphysa are better understood than the Afrotropical ones, however there are large gaps in knowledge for several species from the two regions, which are mainly recognized by color patterns, number of eyes, empodial complex and furcula morphologies. Many species of Trogolaphysa are troglophiles, and some have evident troglomorphisms such as the reduction or absence of eyes, body lacking pigments and elongated antennae. Caves provide an important role for biological processes due to the unique environmental stability, but they also have an important economic role in Brazilian mining, with limestone extraction being the main economic activity in municipalities that share carbonate rock caves in Rio Grande do Norte (RN). Previous surveys have shown that Trogolaphysa is the dominant Collembola genus in RN caves. This genus has species with questionable status and its taxonomic study may assist in conservation policies. For this reason, this work presents a detailed taxonomic review based on Trogolaphysa bibliography, with a revised diagnosis and a summary of the general morphology of the genus, detailed diagnoses for all species, comparative tables, key for all taxa of the genus and the description of two new species of Trogolaphysa. The specimens representing new species were collected with entomological aspirators and brushes, outside and inside of 10 limestone caves from the Caatingaa biome. We suggested as species inquirendae taxa which status was considered doubtful due to uninformative diagnoses, dubious taxonomic characteristics and/or inaccurate data on distribution. Fourteen species inquirendae were identified and 51 valid Trogolaphysa diagnoses were remarked. A synthesis on the general morphology of the genus was also presented, summarizing the variations in the chaetotaxy and in other main structures. The description of two new species of Trogolaphysa widely distributed in RN caves, along with the genus revision, provide more accurate data in the species diagnoses, increases the knowledge to the world fauna of Trogolaphysa which can assist in the conservation policies of caves in the RN.

2
  • CARLA TATIANE PEREIRA SILVA
  • TAXONOMY OF ENTOMOBRYOIDEA (COLLEMBOLA, HEXAPODA) IN A CERRADO AREA IN BRAZIL

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • RENATA ANTONACI GAMA
  • RONIERE ANDRADE DE BRITO
  • Data: 30-mar-2021


  • Resumen Espectáculo
  • Springtails are microhexapods associated to different habitats, especially to humid edaphic environments. There is currently about 9,200 nominal species of springtails, most of them found in temperate regions, and the deficit in the coverage of taxonomic studies from tropical regions is apparent. The Entomobryomorpha is the most diverse order of Collembola, holding almost 4000 described species. It also houses the largest superfamily, Entomobryoidea, which has a wide distribution and consists of three families: Orchesellidae, Entomobryidae and Paronellidae. In Brazil there are 445 species registered in all regions, with most of them recorded from the Atlantic and the Amazon Forests.The Cerrado is second largest biome in Brazil, and although it is one of the world's biodiversity hotspots, it is undersampled for the Collembola fauna. Thus, this study aimed to carry out the first taxonomic study of the Entomobryoidea fauna from the Chapada dos Guimarães, Mato Grosso, Brazil. at the samples were collected from 12 sites using pitfall traps for two days. The biological material was stored in 70% alcohol, screened and assembled to identification and morphological study. Specimens representing the new species were drawn and described following the literature. Four species of Entomobryoidea were identified in this study, all new to science: Trogolaphysa sp. nov., Entomobrya sp. nov., Salina sp. nov and Seira sp. nov. The four taxa are similar to other Neotropical congeners, but they have a distinctive morphology related to the dorsal and ventral tube chaetotaxy and/or the morphology of the empodial complex. Despite being more common in humid forest environments, E. sp. nov. is the record of the genus for the Cerrado domain. Our data represents a increase of 28,5% in the number of species previously recognized for the Brazilian Cerrado, and suggests that the domain may shelter a rich fauna of Collembola. Therefore, inventories, ecological and biogeographic studies, mainly within protected areas, are necessary for the conservation and understanding of the group's distribution within the Cerrado.

3
  • MATHEUS ARTHUR LÚCIO DA ROCHA
  • Iterative taxonomy of troglobite crustaceans of the genus Potiberaba Fišer, Zagmajster & Ferreira 2013 (Crustacea: Amphipoda) in the Caatinga

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • ANDRÉ RESENDE DE SENNA
  • PAULO CESAR DE PAIVA
  • SERGIO MAIA QUEIROZ LIMA
  • Data: 30-jul-2021


  • Resumen Espectáculo
  • Underground systems can be found in several mineral formations, sheltering a fauna with different life strategies, which together can use the underground environment permanently or temporarily. Among these inhabitants, the troglobites stand out, a group that brings together organisms that present a series of ecological, physiological, morphological and behavioral adaptations associated with the underground environment. In Brazil, the troglobite fauna has been described with greater intensity in the last two decades, with the prospect of new places and the integration of different analytical tools. Despite this, the South and Southeast regions still stand out at the expense of the others, concentrating most of the taxonomic, ecological and genetic studies of troglobite organisms. However, the Northeast, especially the state of Rio Grande do Norte (RN), has stood out in terms of knowledge of this fauna, with the discovery of new species of troglobite invertebrates, such as crustaceans, flatworms and insects. Among the new organisms described in RN, there is the amphipod genus Potiberaba, monotypic and endemic to caves in the region, which for seven years had a distribution restricted to the type locality. After new expeditions, specimens were registered in another eleven locations, and whose molecular data indicated possible new species in caves in the region. Until then, the hypothesis was based only on delimitations using a mitochondrial marker. Thus, through an integrated approach between molecular (including nuclear markers) and morphological tools, the study proposed to assess the convergence between different information to support the hypothesis of a complex of species, as well as to identify morphological characters capable of distinguishing. las, and at the end, propose the description of the new species of Potiberaba. Through an iterative approach between morphological information and molecular markers (cox1 and 28S), the study proposes the existence of five allopatric species, four of which have a restricted distribution, with low genetic and morphological diversity, while P. porakuara is widely found in the south of the Jandaíra Formation. The study also indicated that in addition to genetic divergences, the strains can be identified through morphological characters with a high hit rate, showing that the species richness of this formation is underestimated.

4
  • JEFFERSON DOS SANTOS GÓIS
  • Review of the species of the genus Cyathus Haller (Nidulariaceae, Basidiomycota) from Brazil

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • JULIETH DE OLIVEIRA SOUSA
  • RENATO JUCIANO FERREIRA
  • Data: 27-ago-2021


  • Resumen Espectáculo
  • Nidulariaceae are small size fungi that have a cosmopolitan distribution, occurring on various types of substrates. Among its members, the genus Cyathus Haller is the most representative, with about 84 published species. The genus is characterized by a fruitbody vase or cone-shaped, besides having internal structures that resemble small eggs inside a bird’s nest. Due to this feature, these organisms are popularly known as “bird’s nest fungi”. In Brazil, there are records of distribution of these organisms in all biomes, but with major concentration in the Amazon and Atlantic rainforest. Most of the studies involving Cyathus are focused in publish new species, formulating a large database that has accumulated over the years. In addition, lack of standardization of morphological characteristics has resulted in numerous misidentifications, and after analyses performed with type specimens, it was observed that there were significant differences between these and the Brazilian samples. Thus, this work aimed to perform an extensive taxonomic revision of Cyathus, reevaluating previously published material for the genus, to identify them correctly. For this, loans from Brazilian fungi collections were made, and surveys were performed in areas of Atlantic Forest in Rio Grande do Norte state. A total of 145 samples from institutional collections were analyzed from materials of several biomes, with exception of the Pantanal, totalizing 31 species occurring in Brazil. All species were listed and discussed in this review. In addition, updated descriptions, photo plates, distribution maps and a dichotomous key for all taxa occurring for Brazil are presented. The distribution of Cyathus was extended to 12 new unexplored areas and two samples were considered as potential taxonomic novelties for the genus. The results obtained in this review allowed the elucidation of existing taxonomic problems and provided an updated database for further works with the genus.

5
  • JULIMAR FREIRE DE FREITAS NETO
  • INTEGRATIVE TAXONOMY OF THE COMPLEXES GEASTRUM JAVANICUM LÉV. AND G. VELUTINUM MORGAN (GEASTRALES, BASIDIOMYCOTA) WITH EMPHASIS ON NEOTROPICAL SPECIES

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • RENATO JUCIANO FERREIRA
  • Data: 31-ago-2021


  • Resumen Espectáculo
  • The genus Geastrum Pers. is the most representative (100-120 spp) of the family Geastraceae and is characterized by its basidiomes with starlike dehiscence, making them known as earthstars. It has distribution in all continents except Antarctica. In the last estimate, 71 species of Geastrum were cataloged in Brazilian territory, which represents about 50% of the known species. This genus presents a great pharmacological and biotechnological potential, besides the important role in the cycle of molecules such as carbon and nitrogen, reinforcing the importance of correctly identifying these organisms. The identification of fungi based only on morphological aspects aggravates taxonomic problems such as the cryptic or semi-cryptic species. The nominal species Geastrum javanicum Lév. and Geastrum velutinum Morgan harbor a species complex, concealing the diversity of the genus, mainly due to the use of these names for species not yet described by science. Thus, comparative studies using molecular (sequencing of ribosomal DNA regions) and morphological data from exsiccata named G. javanicum and G. velutinum were performed to correctly identify the specimens. The analyses were based on methodologies specific for Geastrum and adding new taxonomic characters (size of hyphae of the exoperidium, basidiospores ornamentation size, crystals found in the rhizomorph). 62 exsiccates named G. javanicum and G. velutinum have been analyzed and three new species identified: Geastrum calycicoriaceum, G. tupiense e Geastrum sp. nov. The present work can also contribute to the generation of new Geastrum sequences for the Neotropical region, elucidating the position of these individuals in the systematics of the genus from morphological and phylogenetic studies, promoting a greater evolutionary and systematic understanding of the group.

6
  • ERICKA WANNESCKA DOS SANTOS
  • Karyotypic reduction in species of the Apogonidae family (Kutiformes): involved rearrangements and association with biological aspects of the group

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • KARLLA DANIELLE JORGE AMORIM
  • WAGNER FRANCO MOLINA
  • Data: 11-oct-2021


  • Resumen Espectáculo
  • The Apogonidae family (Kurtiformes), known as cardinals, represents a very diverse group of reef fish, present in all oceans. Some of its species exhibit the rare buccal incubation behavior of eggs, which can influence the potential for dispersal of the species. This group has karyotypes with reduced diploid values (2n = 34-46), but cytogenetic data for the family are still scarce. In this sense, the expansion of chromosomal data for the family, involving representatives from different oceans, represents a relevant evolutionary model of karyotype evolution. In order to understand the karyotypic evolution of the family, here are given the cytogenetic data that expand the phylogenetic spectrum, and allow the analysis of the dispersive potential of the species and the organization of repetitive sequences in chromosomes. For this, conventional cytogenetic techniques were used (Giemsa staining, Ag-NORs and C-banding); Fluorescent in situ mapping (FISH) of six repetitive DNA classes (18S rDNA, 5S rDNA; retrotransposon Rex3; Microsatellites (CA) 15 and (CGG) 10 and telomeric sequence), in the species Apogon americanus, Phaeoptyx pigmentaria (Atlantic Ocean), Sphaeramia nematoptera and Pterapogon kauderni (Indo-Pacific). The diploid numbers if decreased (2n = 36, A. americanus; 2n = 38, P. pigmentaria; and 2n = 46, S. nematoptera and P. kauderni), large in Atlantic species. The heterochromatic regions are reduced and the Ag-NORs / 18S rDNA regions are simple. The 18S and 5S rDNA sites are non-synthenic in the Pacific species and co-participant in the same chromosome pair in the Atlantic species. As two microsatellite sequences, as well as Rex3, they are dispersed in chromosomes. The telomeric sequences exhibited interstitial telomeric sites (ITS) in A. americanus, indicating a karyotypic reduction mediated by the tandem fusion mechanism with active participation of pericentric inversions. The family's karyotypic diversity contrasts with the numerical conservatism of other reef fish groups, suggesting a possible relationship with biological factors (buccal egg incubation), which shifts the dispersive potential and favors a karyotypic differentiation of the group. The karyotypic characteristics of Apogonidae broadens the understanding of how biological and environmental factors (extrinsic factors) contribute as triggers for a high rate of chromosomal differentiation (intrinsic factors) in some groups of marine fish.

7
  • DALVAN HENRIQUE LUIZ ROMEIRO
  • Contrasts of chromosomal evolution and repetitive DNA diversification in angelfishes (Pomacanthidae, Teleostei)

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • CLÓVIS COUTINHO DA MOTTA NETO
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • WAGNER FRANCO MOLINA
  • Data: 11-oct-2021


  • Resumen Espectáculo
  • Karyotypic stasis processes and intense chromosomal changes exemplify extreme phenomena of karyotypic changes. Some groups of marine fishes have both conditions reflected in the karyotypes of their species. One of these groups, Pomacanthidae, presents 12% of the species with karyotypes with a high degree of conservatism in the diploid number (2n = 48), but with karyotype structures that can be very divergent. Here are presented cytogenetic data of six species of the family, Pomacanthus paru, P. arcuatus, Holacanthus tricolor, H. ciliaris, Centropyge aurantonotus (Atlantic ocean), and C. eibli (Indian ocean), obtained by conventional methods and fluorescent in situ hybridization of six repetitive DNA classes (rDNAs, microsatellites, transposable elements, histones) that demonstrate the karyotypic diversity and contrasting patterns of chromosomal evolution of the group. The analyzed species share the same diploid number (2n = 48), with karyotypes formed mainly by acrocentric chromosomes, except for C. aurantonotus, which exhibits a large profusion of bi-brachial elements. Despite the numerical and structural conservatism of karyotypes, there were variations in the distribution and organization of some repetitive DNA classes. All species exhibited only one 18S rDNA loci, while the 5S rDNA regions were more variable, occurring in most chromosomes of C. aurantonotus. Pomacanthus paru and P. arcuatus, with recent divergence, exhibit very similar karyotypes, including the arrangements of the 18S rDNA sites, but differ in the positioning of the 5S rDNA regions. Holacanthus species showed considerable variation in number and position of histone H4 sites. The occurrence of evolutionary traits related to chromosomal structure and organization of repetitive sequences in some species indicate disruptive events on the limited karyotypic diversification of the group, mediated by pericentric inversions and heterochromatinization processes.

Tesis
1
  • Xochitl Margarito Vista
  • ARBUSCULAR MYCORRHIZAL FUNGI (GLOMEROMYCOTA) ASSOCIATED WITH AQUATIC PLANTS IN NEOTROPICAL LENTIC ECOSYSTEMS

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • ROSILAINE CARRENHO
  • INDRA ELENA ESCOBAR
  • BRUNO TOMIO GOTO
  • FRANCISCO ADRIANO DE SOUZA
  • PATRÍCIA OLIVEIRA FIUZA
  • Data: 29-ene-2021


  • Resumen Espectáculo
  • Arbuscular Mycorrhizal Fungi (AMF) are widely studied in terrestrial ecosystems, due to the symbiosis formed with more than 80% of plant species, however, there is little study on AMF in aquatic macrophyte species, especially in lentic environments in Brazil. In order to test the hypothesis that tropical aquatic environments have high diversity and colonization of AMF analyzes of diversity and distribution of AMF associated with aquatic macrophytes in four perennial ponds in Rio Grande do Norte (RN), in order to verify diversity, species composition besides the colonization of the roots of macrophytes that inhabit this peculiar ecosystem were carried out. Samples of aquatic sediment and rhizosphere of aquatic macrophytes were collected during the rainy season (July/August) 2017. The composition of species, richness, abundance and colonization of AMF in aquatic macrophytes was evaluated, as well as abiotic factors of water. A total of 11,760 glomerospores were recorded in 51 AMF species associated with 14 plant hosts where 11 were colonized by AMF. In general, Glomus and Acaulospora were predominated genera, in addition, five new records of AMF species were found for aquatic environments. Some species, genera, families and orders were indicative of certain areas of study. The richness and abundance of AMF differed between the ponds, the Jiqui ponds was the richest (35 spp. and 5,266 spores), however it did not differ when considering the plant effect. The turbidity variable was related to the variation in the composition of AMF from three ponds (Azul, Jiqui and Jenipabu), and the total dissolved solids (SDT) was correlated with the variation in the AMF composition of the Boqueirão pond. Nymphoides indica had a high colonization taxa (99%). The Cyperaceae family, despite being considered non-mycotrophic, presented mycorrhizal colonization (1-97%). Xyridaceae was registered as a new host to harbor AMF, and the families Nymphaeaceae and Characeae were not colonized, a significant difference was presented between the types of AMF structure, hyphae (%H) was the most representative. The Paris morphological structure was the only and most frequent in the study areas. A positive correlation was observed between percentage of root colonization and AMF richness and abundance in the aquatic sediment. The high values obtained in the present study show that the aquatic environments are rich in AMF, drawing attention to be more studied.

2
  • DIEGO DE MEDEIROS BENTO
  • Phylogeography of troglobitic arthropods from the west of Jandaíra formation, northeastern of Brazil: evolution and biological connectivity in subterranean environments as a basis for conservation actions

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • CHRISTIANE RAMOS DONATO
  • ANTÔNIO MATEO SOLÉ-CAVA
  • LÍVIA MEDEIROS CORDEIRO
  • SANDRO SANTOS
  • SERGIO MAIA QUEIROZ LIMA
  • Data: 29-jun-2021


  • Resumen Espectáculo
  • Caves have historically attracted attention of scientists due to troglobites, exclusively subterranean organisms that often have restricted distribution and high levels of endemism. Paleoclimatic events have been pointed out as the main responsible for the origin of troglobitic species, and the west of the Jandaíra formation, northeast of Brazil, combines the occurrence of extensive karst areas, huge concentration of caves and subterranean aquifers in a region that is currently semi-arid. This region is recognized due to the richness and concentration of troglobitic species, some of which (isopods, amphipods and planthoppers) have a relatively wide distribution in geologically and hydrologically distinct areas. Through phylogenetic and phylogeographic analyzes, we aim to assess the patterns of genetic variation of these taxa, investigate possible cryptic diversity and delimit operational taxonomic units (OTU’s), as well as indicate the factors that possibly influenced their diversification. In addition, we aim to assess the conservation status of the lineages and identify priority areas for their conservation. With the exception of Cirolanidae sp.1 (Isopoda), the other taxa showed extensive diversity of cryptic lineages and, in addition to the identification of three OTU’s for Cirolanidae sp.2 and five for Potiberaba (Amphipoda), K. troglobia (Hemiptera) probably is a complex with seven cryptic species, distributed according to microbasins (aquatic taxa) and outcrops (Kinnapotiguara). Only a small portion of the lineages are found in protected areas, while the majority occur in areas exposed to anthropic threats and can be considered endangered: Cirolanidae sp.1 was categorized as Vulnerable, while Cirolanidae sp.2 has one Least Concern (LC) and two Critically Endangered (CR) lineages. For Potiberaba, there are two LC, one Endangered (EN, P. porakuara) and two CR lineages, and, for Kinnapotiguara, there are four EN and three CR (including K. troglobia) lineages. Two priority areas were identified for the conservation of these lineages, with emphasis on the region of Abreu stream microbasin and Rosário outcrop, in Felipe Guerra municipality, which harbor half (eight, six of which are endemic) of the identified lineages. The Rosário outcrop, which can be considered a cave system and harbor 24 troglobitic species, is a new hotspot of subterranean biodiversity. Finally, we present the booklet “Vida nas CaveRNas”, designed as an educational strategy with the aim of arousing interest in caves, their inhabitants and their conservation.

3
  • ALEXANDRE GONÇALVES DOS SANTOS E SILVA FILHO
  • Phylogenetic systematics of Lactifluus (Russulales) with emphasis on species from the north and northeast of Brazil

  • Líder : FELIPE WARTCHOW
  • MIEMBROS DE LA BANCA :
  • DIRCE LEIMI KOMURA
  • FELIPE WARTCHOW
  • MARCELO ALOISIO SULZBACHER
  • MARIANA CAVALCANTE E ALMEIDA SÁ
  • VAGNER GULARTE CORTEZ
  • Data: 24-sep-2021


  • Resumen Espectáculo
  • Lactifluus (Rusulaceae, Rusulales) groups fungi that produce in their reproductive form agaricoid, pleurotoid and gasteroid basidiomata, mainly characterized by latex exudation. Lactifluus has approximately 210 species distributed mostly in the tropics, where they frequently form ectomycorrhizal association with a wide variety of plants. The diversity of the genus has been better investigated in Africa and Asia, while remains underexplored in Neotropical region. In Brazil, only nine Lactifluus species were described or reported from Amazon, Atlantic Forest and Caatinga, and another ten species still treated as Lactarius needed to be revised and confirmed. Thus, the proposed project aimed to systematize and interpret the genus Lactifluus from morphological and molecular analysis, with the increase of new collections and review of collection of Herbaria from different biomes in the North and Northeast regions of Brazil. The analyzes were based on morphological and molecular data from ten specimens deposited in the PACA, INPA, JPB UFRN-Fungos and URM Herbaria; and also of 31 specimens collected in different ecosystems of Amazonia, Caatinga and Atlantic Forest. The morphological review of herborized collections resulted in recombination of Lactifluus amazonensis, Lactifluus brasiliensis, Lactifluus braunii, Lactifluus mamorensis, Lactifluus russula and Lactifluus rupestris; and in the designation of one lectotype for Lactifluus annulifer, Lf. braunii and Lf. russula. New sample resulted in the identification and sequencing of Lf. amazonensis, Lf. annulifer, Lactfluus dunensis, Lactifluus lepus, Lactifluus neotropicus and Lactifluus mamorensis. Another 11 species were proposed as new to science: Lactifluus aurantioceraceus nom. prov., Lactifluus brunneoruber nom. prov., Lactifluus candidus nom. prov., Lactifluus flavuscaespitosus nom. prov., Lactifluus guttulatus sp. nov., Lactifluus perforatus nom. prov., Lactifluus piperogalactus sp. nov., Lactifluus reniformis nom. prov., Lactifluus restingae nom. prov., Lactifluus sphatuliformis sp. nov. and Lactifluus umbilicatus sp. nov. Molecular analysis of the ITS, LSU and RPB2 DNA regions of the collected specimens confirm the distinct lineages of the cited species in Lactifluus, in which are distributed in five different clades in the subgenera Gymnocarpi, Lactariopsis and Pseudogymnocarpi. Furthermore, the phylogenetic analyses of the collected specimens provided support for delimitation of two sections: Lactifluus section Piperogalacti sec. nov. and Lactifluus section multicepis nom prov.; and emend of Lactifluus sect. Panuoidei.

4
  • RENATA CLICIA DOS SANTOS COSTA
  • Phylogeny of Collembola (Arthropoda, Hexapoda) based on complete mitogenomes and new species of Entomobrya Rondani (Entomobryomorpha: Entomobryidae)

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • ANAMARIA DAL MOLIN
  • BRUNO CAVALCANTE BELLINI
  • RENATA ANTONACI GAMA
  • RONIERE ANDRADE DE BRITO
  • RUDY CAMILO NUNES
  • Data: 10-dic-2021


  • Resumen Espectáculo
  • Springtails are small hexapods which emerged during the Devonian and are considered one of the oldest taxa of terrestrial invertebrates. Collembola is widely distributed and currently holds more than 9,300 described species in the world. Collembola monophyly is widely accepted, since the group show important and clear synapomorphies, like the colophore, furcula and tenaculum, among others. Currently Collembola is represented by four orders, Entomobryomorpha, Poduromorpha, Symphypleona and Neelipleona, however, the relationship between these orders and among their internal groups are not resolved. The main objective of this study is to propose a phylogenetic hypothesis for the Collembola orders and families based on complete mitogenomes, with emphasis on Entomobryoidea. For this, 105 sequences of complete mitochondrial genomes available in GenBank were used, of which 101 belong to Collembola and four from Diplura and Protura used as outgroups. Phylogenies were based on Maximum Likelihood analysis using the 13 protein coding genes that together almost correspond to the entire DNAmt (mitogenome). The results corroborate Collembola's monophyly and show Diplura as its sister group. Entomobryomorpha and Poduromorpha were recovered as polyphyletic, with unexpected positions of Oncopoduridae and Tullbergiidae; Symphypleona and Neelipleona as monophyletic and on basal positions in the phylogeny. The Entomobryoidea + Isotomidae clade was recovered, but the monophyly of Isotomidae has not been recovered. Orchesellidae gathered the subfamilies with and without scales; Entomobryidae was recovered as paraphyletic and Paronellidae as polyphyletic, with Salininae among Entomobryinae; finally, the Seirinae + Lepidocyrtinae grouping was recovered.

5
  • KÁSSIA JÉSSICA GALDINO DA SILVA SCHINAIDER
  • Evaluation of the composition of arbuscular mycorrhizal fungi (Glomeromycota) in halomorphic soils in Rio Grande do Norte

  • Líder : RAQUEL CORDEIRO THEODORO
  • MIEMBROS DE LA BANCA :
  • CAMILA PINHEIRO NOBRE
  • JADSON DIOGO PEREIRA BEZERRA
  • LARISSA CARDOSO VIEIRA
  • RAQUEL CORDEIRO THEODORO
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 20-dic-2021


  • Resumen Espectáculo
  • The coastal zone of Rio Grande do Norte (RN) is the main focus of salt production in the country, significantly impacting the plant and microbial community, as well as the soil in this region. In this scenario, Arbuscular Mycorrhizal Fungi (AMF), as they form an obligatory symbiosis with plant roots, play an important role in this plant-soil system, increasing the tolerance of plant symbionts to stressful environments, such as saline ones. Thus, this thesis aimed to identify the diversity of the AMF community in a saline activity zone on the north coast of RN, seeking to understand the influence of salinity on this diversity. For this, four collections were carried out, during two consecutive periods of dry and rainy season, between NOV/2017 to JUN/2019 in three locations with different levels of salinity (saline in Macau [active saline], Reserva de Desenvolvimento Sustentável Estadual Ponta do Tubarão [negative control] and Galinhos [natural saline]) followed by physicochemical and taxonomic analyses. Thirty-eight species were identified, distributed in 20 AMF genera (Acaulospora, Ambispora, Dentiscutata, Cetraspora, Corymbiglomus, Claroideoglomus, Endogone, Entrophospora, Fuscutata, Gigaspora, Glomus, Intraornatospora, Oehlia, Paradentiscutata, Paraglomus, Rhizoglomus, Racocetra, Sclerocystis, Scutellospora and Septoglomus), being the active saline environment the richest and most abundant in AMF species, when compared to the other two collection sites, with lower average salinity. Regarding the seasonal dry and rainy seasons, in general the dry season was richer in number of species and had greater abundance of spores. According to the UPGMA analysis, what most correlated the samples from the same area was the plant composition. However, the influence of salinity cannot be ruled out, since samples with higher salinity indices had lower species richness than samples with lower indices within the same collection area (Macau active salt). Therefore, more samples would be needed to statistically validate this observation. In addition to these results, a new species of the genus Acaulospora, which was the most abundant in the samples, was described, containing a double ornamentation with pit-shaped depressions, with spine-shaped projections inside, in a flat view the pits are connected as structures that look like channels. Along with the description of the new species, a review of the genus Acaulospora was carried out with phylogenetic analyzes using nrDNA sequences, which showed that Acaulospora is a monophyletic genus that also includes the species Kuklospora colombiana and K. kentinensis. Furthermore, we can conclude that the ornamentations described for the species of Acaulospora, despite being useful for the morphological description of species, constitute homoplastic characters due to the convergence of these characteristics in groups of species that do not share a more recent single ancestor. Spores of the species Corymbiglomus globiferum, also collected in the areas of this study, were used and deposited in the UFRN herbarium, analyzed and included in the article “Sieverdingia gen. nov., S. tortuosa comb. nov., and Diversispora peloponnesiaca sp. nov. in the Diversisporaceae (Glomeromycota)”.

2020
Disertaciones
1
  • NATHÁLIA MICHELLY DA CUNHA SANTOS
  • New species of Trogolaphysa Mills, 1938 (Collembola) from a cave complex in Minas Gerais, Brazil 

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • DOUGLAS ZEPPELINI FILHO
  • RUDY CAMILO NUNES
  • Data: 14-feb-2020


  • Resumen Espectáculo
  • Entomobryoidea is the largest superfamily of Collembola and the most representative considering cave taxa. Trogolaphysa Mills, 1935 (Entomobryoidea, Paronellidae) is commonly found in Neotropical caves and there are three cave species registered from southeastern Brazil, of which T. hauseri Yosii, 1988 is considered vulnerable by the Brazilian Red Book of Endangered Fauna. In this sense the identification and description of subterranean fauna is important for conservation of an area since each cave ecosystem has particular features and could hold endemic taxa. This study aims to describe new species of Trogolaphysa from a cave complex, Lagoa Santa Karst, Minas Gerais, southeastern Brazil. Specimens were collected from caves in Matozinhos municipality during the dry season (2017) and wet season (2018). The material was mounted on slides, analysed and drew under an optical microscope. Four new species of Trogolaphysa were found and described. Trogolaphysa sp. nov. 1 is diagnosed by 8+8 eyes, head with macrochaetae A0, A3, S5 and Pa5, 21–23 spines on trochanteral organ, unguiculus lanceolate with serrated external edge and 22–24 inner spines on dens; Trogolaphysa sp. nov. 2 present  8 + 8 eyes, head with macrochaetae A0, A2, S3, Pa5 and Pm3, 20 spines on trochanteral organ, unguiculus lanceolate with external serrated edge and 22–33 inner spines on dens; Trogolaphysa sp. nov. 3 is diagnosed by absence of eyes and pigments, head with macrochaetae A0, A2, S3 (S3 as microchaeta in some specimens), Pa5 e Pm3,  thorax II with three macrochaetae on p3 complex, 18 spines on trochanteral organ, unguiculus truncate with smooth external edge and 21–23 inner spines on dens; and Trogolaphysa sp. nov. 4 is diagnosed by 8+8 eyes, head with macrochaetae A0, A2, S3, S5, Pa5 e Pm3, thorax II with 4–6 macrochaetae (2–3 macrochaetae on p3 complex), 32 spines on trochanteral organ, unguiculus lanceolate with smooth external edges and 33–36 inner spines on dens. The new records and descriptions of species, especially Trogolaphysa sp. nov. 3 bearing clear troglomorphisms (absence of eyes and body pigment) suggests some sampled caves possibly hold endemic fauna and therefore such areas could be considered priority areas for conservation which should be spared of exploration and other anthropic activities.

2
  • JÉSSICA FERNANDA RAMOS COELHO
  • Abiotic niche and global warming effects in Riorajini (Rajiformes, Chondrichthyes), skates from Southwestern Atlantic Ocean

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • FRANÇOISE DANTAS DE LIMA
  • MARIA CRISTINA ODDONE
  • Data: 20-feb-2020


  • Resumen Espectáculo
  • The abiotic niche of species tells part of their ecological and evolutionary history, as well as helps to identify groups that are more susceptible to extinction in a context of a rapidly changing climate. Marine species from temperate regions are among the most vulnerable taxa because habitat loss as a consequence of thermal stress and other cascading impacts can constrain the availability of suitable area of occurrence, or result in distribution shift towards higher latitudes. The tribe Riorajini comprises four species of neotropical skates that are evaluated by IUCN as vulnerable or endangered, and cooccur in the subtropical Atlantic Ocean: Atlantoraja castelnaui, A. cyclophora, A. platana and Rioraja agassizii. The present dissertation is divided into two chapters and uses this group as a model for eco-evolutionary studies. In the first chapter, phylogenetic niche conservatism is questioned for a clade of sympatric and competitive sister-species. Low niche overlap was expected to reduce interspecific competition between closely-related species. The second chapter assessed the impacts of climate change on the current geographical distribution of the tribe Riorajini. Ecological niche models for each species of the group were developed under current and future (2100, for the most extreme scenario) geophysical and climatic conditions of the marine environment. Environmental data and species occurrence data were compiled from public databases and literature. Niche shift and overlap were measured within and between species. Results indicate phylogenetic niche conservatism in which shallow waters, proximity to the coast, and low nitrate concentration are the most important variables for the occurrence of these species. Under the future climatic scenario projected, the areas of higher environmental suitability for the occurrence of each species analysed increases up to 20% towards deeper areas, suggesting that this clade will resist the thermal stress resulting from global warming. Nevertheless, future studies should consider the combined effects of temperature increase with other factors potentially determining the coexistence of these species, such as prey availability.

3
  • LUCAS SILVA DE MEDEIROS
  • Description of two new species small catfishes of the genus Microcambeva Costa & Bockmann (Siluriformes: Trichomycteridae) from costal river basins in Antlantic forest southeastern

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • JULIANO FERRER DOS SANTOS
  • LEANDRO VILLA VERDE DA SILVA
  • Data: 28-feb-2020


  • Resumen Espectáculo
  • Represented by six species, the genus Microcambeva comprises small psamophilic catfishes endemics of costal basins of Antlantic
    forest, southeastern Brazil, occurring from north of Paraná state until to south extreme of Bahia state. Recent samplings listed new records of the genus in median
    portions in Doce river basin, states of Minas Gerais and Espírito Santo, and in Guapi-Macacu river basin, in state of Rio de Janeiro, represents a new species. A new
    specie, Microcambeva sp. n. “Doce” easily diagnosed from all congeners for nasal, maxillary and rictal barbells medium in size and by the cephalic staining pattern a
    heart. Distinguish from M. ribeirae and M. filamentosa, except of species “Clade M. draco” for presenting ossification in anterior poriton of autopalatine. Differ, M.
    barbata¸ except de M. mucuriensis, M. jucuensis and M. draco for presenting ossification on autopaletine rudimentary. Differ of M. mucuriensis and M. draco, except
    M. jucuensis for anterior process of opercle forked. Distinguish from M. jucuensis for nine odontodes opercle. Microcambeva sp. n. “Guanabara” easily diagnosed from
    other species, except M. ribeirae and M. filamentosa for absence ossification on anterior portion of autopalatine and fusion of supraorbital pore s6, in central portion of
    head. Distinguish from all species, excepted M. ribeirae, pectoral din ray not modified in filament, in all species the first ray may change to 5%-80%. Microcambeva sp.
    n. “Guanabara” differs M. filamentosa for eight odontodes in opercular and interocular patch. The new species differs from M. ribeirae for a rictal barbell elongated,
    reaching anterior portion of interopercular patch, origin of anal fin verticality in 19th vertebra and a patterns color formed for dark chromatophores in median of trunk.

4
  • VALÉRIA FONSECA VALE
  • Macroecological rules in hermit crabs of Western Atlantic

  • Líder : FULVIO AURELIO DE MORAIS FREIRE
  • MIEMBROS DE LA BANCA :
  • FULVIO AURELIO DE MORAIS FREIRE
  • PABLO ARIEL MARTINEZ
  • TIEGO LUIZ DE ARAÚJO COSTA
  • Data: 28-feb-2020


  • Resumen Espectáculo
  • Body size is one of the fundamental eco-evolutionary variables of species and populations, reflecting the life history of taxa, i.e. physiological variations and fitness traits. Two macroecological rules are strongly related to the body size of organisms: Bergmann and Rensch. Bergmann’s rule states that organisms are larger in colder regions (high latitudes). The Rensch’s rule states that sexual size dimorphism increases when males are larger. In addition to body size, body shape is a covariate in taxa. Desiccation, temperature, distinct energy expenditures during growth, reproduction and life history can all influence the bias of these rules. Some organisms that have their growth mediated by shelter, hermit crabs, for example, have a mandatory metabiosis relationship with gastropod shells, making them excellent models for assessing macroecological and evolutionary patterns in the face of these constraints. Using body size data (literature and in situ), regression models were designed to evaluate the rules separately and their interaction and types of used shelters. In addition to size, shape abstraction was used in investigations in situ data (sexual dimorphism). The three species of Clibanarius showed interpopulation clines consistent with Bergmann’s rule. There was no sexual size dimorphism for Clibanarius between or within species and for evaluation of Rensch’s rule, C. antillensis revealed an inverse pattern to the rule. In the assessment of sex-specific divergence in response to latitudinal gradients, latitude magnified the interpopulation body effect in females. This reveals that body size variation is modulated by fecundity selection.

5
  • FERNANDA GONDIM LAMBERT MOREIRA
  • e-Flora of Climbing Plants From Seridó Ecological Station, Rio Grande do Norte, Brazil

  • Líder : FERNANDA ANTUNES CARVALHO
  • MIEMBROS DE LA BANCA :
  • ALICE DE MORAES CALVENTE
  • FERNANDA ANTUNES CARVALHO
  • RUBENS TEIXEIRA DE QUEIROZ
  • Data: 17-abr-2020


  • Resumen Espectáculo
  • Seasonally dry tropical forests (SDTF) are widely distributed throughout the tropical region. In Brazil, this formation is represented by the Caatinga, which presents a great richness and endemism of angiosperms among the Neotropical SDTF. However, only a small portion (7.8%) of its total area is protected. The biome is also deficient in the study of flora, especially in remote and scientifically neglected areas, such as the Seridó region. Located between the states of Rio Grande do Norte (RN) and Paraíba (PB), the Seridó region has an underestimated floristic diversity, mainly in non-tree components, such as climbers. Given this scenario, it is essential to increase efforts in surveying flora, especially in remote and historically neglected areas. The implementation of these measures benefits the dissemination of taxonomic information from these regions, and consequently, favors actions for the conservation of local flora. Thus, the proposed work aims to: survey the climbers of the Seridó Ecological Station, a federal conservation unit located in the state of Rio Grande do Norte, as well as providing a multi-access key, taxonomic treatment and guides field for the species existing in the unit. For this, collections were carried out between 2018 and 2019 as well as consultation of material deposited in the UFRN herbarium. Altogether, 52 species of climbers were listed, among them, 32 herbaceous and 20 woody. Among these species, five are new occurrences for the RN, as well as one genus (Tetrapterys). In addition, there was an increase of 23.1% the number of species in relation to the previous checklist performed at the unit. The identification key is already available on the Xper³ online platform (available at: xper3.fr/xper3GeneratedFiles/publish/identification/-4505993480748774750/mkey.html) and the complete flora, together with the others products will be made available on the website of the “E-flora of ESEC do Seridó” project, facilitating access to the most diverse audiences.

6
  • THAÍS FERREIRA PINTO DE ARAÚJO
  • From “ginga” to “sardinha”: ethnoichthyology and molecular systematics of small fishes of cultural value from the Brazilian coast

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • MARINA VIANNA LOEB
  • SERGIO MAIA QUEIROZ LIMA
  • UEDSON PEREIRA JACOBINA
  • Data: 23-abr-2020


  • Resumen Espectáculo
  • The assessment of fishery stocks for sustainable management and conservation measures are made using fishery statistics, which requires reliable data and is, in most cases, based on popular names. However, basic data such as taxonomy, popular names, geographical distribution, and delimitation of stocks, for example, often are not available, which compromise fishery management. Thus, this project combines ethnoichthyology and phylogeographic analyses of two clupeids Opisthonema oglinum and Harengula spp. to identify their popular names and investigate their phylogeographic patterns, and then delimit fish stocks on
    the Brazilian coast. In the first chapter, I describe the perception of fishers and local consumers of what is “ginga”, which are small coastal fish and are part of the typical dish “ginga com tapioca”, an intangible cultural heritage of the Rio Grande do Norte state. Through interviews and specimens at fish markets in six locations in three states of northeastern Brazil, I found that “ginga” consists of juvenile individuals of some sardine and anchovy species, and that the only difference between “ginga” and sardine is the size, “ginga” representing the smaller fishes and sardines the larger, sometimes of the same species. The popular name is basically restricted to the metropolitan region of Natal city. In addition, the “ginga” can be considered a "culturally important species" and, therefore, should among the target species for conservation and local management. In the second chapter, I compare the phylogeographic patterns of the two most representative groups of “ginga”, O. oglinum and Harengula spp., along their supposed Western Atlantic distributions using mitochondrial markers. In addition, I investigate how many stocks of these taxa are on the Brazilian coast and in the oceanic archipelago of Fernando de Noronha. In this archipelago, where sardines are used as bait for artisanal fishing, a conflict between fishermen and environmental agencies is underway, and the lack of basic data, including the identity of the species, is essential for sustainable management. Our results indicate O. oglinum as a single species in the entire Western Atlantic and with population structure between Brazil, USA + Mexico and Bermuda, and Harengula as three species, Harengula clupeola and H. jaguana in North America and the Caribbean and one distinct species in Brazil. Furthermore, the date of separation between the Harengula species in the northern hemisphere and Brazil coincides with the increased discharge of the Amazon and Orinoco rivers. With these results it is possible to observe that, despite the similar biology, O. oglinum and Harengula spp. they do not have the same phylogeographic pattern and must be handled differently.

7
  • GLAICON DE SOUSA SANTOS
  • Cytogenetic aspects of fish from the Gempylidae and Balistidae families of the São Pedro and São Paulo Archipelago, Meso-Atlantic region

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • RODRIGO XAVIER SOARES
  • WAGNER FRANCO MOLINA
  • Data: 04-jun-2020


  • Resumen Espectáculo
  • Despite the accumulation of cytogenetic information, which already exceeds 3,000 species, different fish groups, regardless of their diversity, are still lacking useful cytogenetic information in evolutionary inferences. Gempylidae (Scombriformes) with 16 genera and 26 meso or bentopelagic species and relative importance in commercial fishing, has no cytogenetic information. Similarly, the diverse family Balistidae (Tetraodontiformes), with 42 species, has less than half of species with known karyotypes. Aiming to contribute to the mitigation of gaps in the knowledge of cytogenetic aspects of marine fish, especially those that inhabit Brazilian island environments, the Promethichthys prometheus and Ruvettus pretiosus (Gempylidae) and Canthidermis maculata and C. sufflamen (Balistidae) species from Archipelago of St. Peter and St. Paul, Meso-Atlantic region. Cytogenetic analyzes employed conventional methodologies (Giemsa staining, Ag-NORs staining and C-banding), base-specific fluorochrome staining (CMA³ / DAPI) and repetitive DNAr18S, rDNA 5S, microsatellite (CA)15 and (GA)15, and transposable elements Tol2 and Rex3, by fluorescence in situ hybridization (FISH). Promethichthys prometheus and R. pretiosus have 2n = 48 chromosomes, however, differ considerably in karyotype formula (NF = 84 and NF = 50, respectively.) The mapping patterns of the different classes of repetitive DNA, however, suggest a small divergence in microstructure. On the other hand, C. maculata (2n = 46 and NF = 58) and C. sufflamen (2n = 44 and NF = 58) exhibit reduced karyotypes resulted from tandem fusions rearrangements, which contributed to structural and numerical variation of karyotypes, followed by small diversification in the internal organization of chromosomes. The present results corroborate that the remarkable diversity of marine fish groups in some groups is accompanied by particular karyoevolutionary tendencies.

8
  • JULIANA LUIZA ROCHA DE LIMA
  • Arbuscular Mycorrhizal Fungi (Glomeromycota) in Different Phytophysiognomies in Chapada do Araripe, Ceará, Brazil

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • KHADIJA JOBIM
  • PATRÍCIA OLIVEIRA FIUZA
  • Data: 13-nov-2020


  • Resumen Espectáculo
  • Brejos de Altitude are areas of exception or fractions of the perennial tropical rainforest, bringing together both characteristics of the Atlantic Forest and Caatinga biomes, being “islands” of humid forest amid dry vegetation. These environments are usually areas with particular characteristics (vegetation, climate, fauna and soil) different from the environments that surround them. In such environments, little is known about what are the biotic and abiotic factors that are directly related to the modification of the biodiversity of microorganisms present in the soil. Among these, there are the Arbuscular Mycorrhizal Fungi (AMF), which live symbiotically associated with most of the roots of the plants, mainly increasing the absorption of nutrients and facilitating plant growth. These fungi are worldwide and widely studied in several ecosystems, mainly due to their ecological importance for the maintenance of the environment, being distributed in the main terrestrial biomes, in which new species are often known, however the knowledge of the diversity, richness and ecological strategies of these fungi in areas of brejos de altitude it is scarce and requires more research. In this sense, the objective of this work was to compare the diversity of FMA species between different phytophysiognomies of an brejo de altitude, in order to characterize the richness and diversity of FMA in Chapada do Araripe, Ceará, Brazil. The soil samples were collected in April/2019. Two types of phytophysiognomies were selected: cerradão and humid forest. Spores were quantified and morphologically identified to carry out ecological analyzes of the FMA community. A total of 95 species were recorded, distributed in four orders, 11 families and 17 genera. Some species were detected as indicators of a certain phytophysiognomy. The number of spores was higher in cerradão compared to humid forest, but the richness was higher in humid forest. It was observed that the composition of the FMA communities differed significantly between the phytophysiognomies of Chapada do Araripe. In addition, a significant change was also observed between the FMA community and the chemical parameters of the soil, highlighting the influence of some variables. This work also proposes the morphological description of a new species for the area. The results obtained demonstrate the importance of environments such as brejos de altitude to be studied with their different phytophysiognomies, as for the FMA community and that differences in plant composition, associated with other factors, can provide environmental conditions for the creation of different microhabitats and have influence in the composition, diversity and distribution of FMA communities.

Tesis
1
  • FLÁVIA DE FIGUEIREDO PETEAN
  • Evolution and biogeography of the genus of marine stingrays Hypanus Rafinesque, 1818 (Myliobatiformes, Dasyatidae)

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • LUIZ ALVES ROCHA
  • VICENTE VIEIRA FARIA
  • FRANÇOISE DANTAS DE LIMA
  • KARLA DIAMANTINA DE ARAUJO SOARES
  • Data: 19-feb-2020


  • Resumen Espectáculo
  • Stingrays of the genus Hypanus Rafinesque (1818) have distribution areas along Atlantic and Pacific coasts of the American continent, as well as a species at the Guinea Gulf, in Eastern Atlantic. Since most Hypanus species are classified under Data Deficiency (DD) at IUCN Red List of Threatened Species, there is a need to solve their taxonomic and geographic distribution issues for future evaluations of their conservation statuses. By studying mitochondrial genomes of all valid species (H. americanus (Hildebrand & Schroeder, 1928), H. dipterurus (Jordan & Gilbert, 1880), H. guttatus (Bloch & Schneider, 1801), H. longus (Garman, 1880), H. marianae (Gomes et al., 2000), H. rudis (Günther, 1870), H. sabinus (Lesueur, 1824), and H. say (Lesueur, 1817))) we delimited 14 lineages, and two of them are the species H. geijskesi (Boeseman, 1948) and H. colarensis (Santos et al., 2004), that used to belong to the genus Fontitrygon (Last et al., 2016), and were now allocated to the genus Hypanus. The species with the widest distribution, H. americanus, is a non-monophyletic group and the lineage that occurs south of Amazon river discharge to Southeastern Brazil is a yet undescribed species and sister to H. rudis, in Atlantic African coast. We examined specimens of the clade H. americanus (H. americanus, H. longus, and H. rudis) to describe a new species using an integrative approach of data from DNA barcode, morphology, and ecological niche modeling. Besides, we inferred Hypanus’ lineages divergence times and identified possible biogeographic barriers posed by the American continent: Isthmus of Panama, Florida Peninsula, Amazon River water discharge, distance between continents separated by the Atlantic and Pacific Oceans, and temperature limitations in Northern and Southern Hemispheres (temperate and tropical waters). The results indicate the geographic distribution of Hypanus species is smaller than previously defined, encompassing yet undescribed species. At the Brazilian coast there are six species of the genus, H. colarensis, H. geijskesi, H. guttatus, H. marianae, H. say, and H. sp. 1,with at least four endemic ones, including the newest herein described. Therefore, with the morphological, genetic, geographical distribution and identification of suitable habitats it is possible to accomplish an evaluation of the conservation status of some species que are classified under Data Deficient in IUCN, even though they are widely fished and consumed in the Brazilian coast.  

2
  • KARLLA DANIELLE JORGE AMORIM
  • Cytogenomic diversification in Serranidae (Perciformes), a model of karyotype stasis: Evolutionary and applied aspects

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • CLÓVIS COUTINHO DA MOTTA NETO
  • LUIZ ANTONIO CARLOS BERTOLLO
  • MARCELO DE BELLO CIOFFI
  • PAULO AUGUSTO DE LIMA FILHO
  • Data: 13-mar-2020


  • Resumen Espectáculo
  • The Serranidae family, whose representatives are known as groupers, is one of the most diverse groups of fish in reef environments. They are efficient predators that can occupy everywhere from tide pools to deep reefs. Some species can reach considerable size and, in general, significant economic value. With a circunglobal distribution, the group consists of 577 species, distributed in 75 genera, of which Epinephelus is the most representative. Despite the growing set of genetic information, less than 10% of species have known cytogenetic aspects. Cytogenetic approaches to the family are dissociated in terms of their phylogenetic, geographical and taxonomic aspects, limiting the understanding of their evolutionary aspects and applied to management. Thus, aiming at a broader estimate of the chromosomal evolution of this family and obtaining data applied to management, conventional cytogenetic analyzes and fluorescent in situ hybridization mapping of the DNAr 18S, DNAr 5S sequences, transposable elements Tol2 and Rex3, microsatellites (CA) were performed 15, (GA) 15, (CAA) 10 and (CGG) 10, and telomeric sequences (TTAGGG) n, in the species Epinephelus coioides, E. sexfasciatus, E. erythrurus, E. tauvina, E. coeruleopunctatus, E. adscensionis, E. itajara, E. striatus, Cephalopholis formosa, C. fulva and Rypticus saponaceus. All species presented 2n = 48, of which only three have karyotypes not composed exclusively of acrocentric elements. Karyotypical conservatism, only disturbed by pericentric inversions, extends to the organization of repetitive DNA, where DNAr 18S and 5S sites reflect a low evolutionary dynamism, combined with arrangements of other essentially similar repetitive sequences. The cytogenetic and genomic divergence between species due to common ancestry that occurred in periods from 15 to 11 M.a apparently provides a reduced level of post-zygotic reproductive block, with valuable implications for the hybridization induced in aquaculture. From a biogeographic and phylogenetic perspective, the most basal groups in the Atlantic demonstrate 2n = 48a as the ancestral pattern for the family, indicating that speciation in the group was not followed by significant karyotype changes and despite a relative frequency of divergent karyotypes, this group of fish is adapted to an evolutionary pattern of karyotype stasis.

3
  • KHADIJA JOBIM
  • Sporocarpic species of arbuscular mycorrhizal fungi (Glomeromycota): taxonomy, systematics and evolution

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • DANIELLE KARLA ALVES DA SILVA
  • IURI GOULART BASEIA
  • PATRÍCIA OLIVEIRA FIUZA
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 31-mar-2020


  • Resumen Espectáculo
  • Arbuscular Mycorrhizal Fungi (AMF) play a symbiotic mutualistic association with most plant species in the most varied terrestrial ecosystems, however, AMF sporocarp species (the only members of the group with macroscopic structures) have been little investigated and taken into account in the taxonomic studies. This fact is mainly attributed to methodological restrictions. The use of the term sporocarp in the Phylum Glomeromycota is controversial, considering diversity of species that present this habit, a consequence of the complex morphology found in the group, which up to the present moment does not have a comprehensive analysis about the informative characters for the delimitation of species. In addition, 77% of the species recognized as sporocarpous were included exclusively on the basis of morphology data, a fact that makes a phylogenetic systematic of this group limited. Thus, the present study aimed at a morphological and molecular review of the sporocarpous species of AMF through the analysis of morphological data and sequences of SSU, LSU and ITS region of DNA. For this, species deposited in institutional collections and collected in areas belonging to strategic domains such as the Amazon, “Brejos de Altitude” and Atlantic Rainforest were analyzed. A total of 64 specimens from institutional collections were reviewed, of which 6 constituted emendations.  In the sampled areas, 17 species were collected, of which 5 new species and a new genus for science. The results obtained allowed to elucidate aspects of the taxonomy, systematics and evolution of the group, including a delimitation of the term sporocarp for the film Glomeromycota, as well as the records of occurrence records for the country, descriptions of taxa and addition of data for use of keys identification.

4
  • SILVIA YASMIN LUSTOSA COSTA
  • Integrative taxonomy and biogeography of armored catfish of the genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) in the drainages in northeastern Brazil

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • CLAUDIO HENRIQUE ZAWADZKI
  • LÚCIA HELENA RAPP PYDANIEL
  • PEDRO HOLLANDA CARVALHO
  • SERGIO MAIA QUEIROZ LIMA
  • UEDSON PEREIRA JACOBINA
  • Data: 20-may-2020


  • Resumen Espectáculo
  • The Northeast of Brazil comprises four biomes (Caatinga, Cerrado, Atlantic Forest and the Amazon) and five continental hydrographic ecoregions: Mid-East Northeast (NEMO), Maranhão-Piauí (MAPI), São Francisco (SAFR), Northeast Atlantic Forest (MANE), and Estuary of the Amazon basin and coastal drainages (EADC). In the last few decades, several species of fish have been described from these ecoregions, including some of the armored catfish of the genus Hypostomus, the richest genus in the Loricariidae family and one of the most widely distributed throughout the Neotropical region. In two of the five ecoregions
    mentioned above (NEMO and MAPI), nine nominal species of Hypostomus are known: seven from NEMO, and two from MAPI. However, many of these species, described in the mid-twentieth century, present problems with the definition of type locality, insufficient specimens making up the type series, undetailed descriptions, and diagnosis based on few external morphological characters. These factors have hindered estimations of richness and distribution of species of the genus in these ecoregions,
    which causes problems when assessing their conservation status. The aim of the present study was to carry out a systematic review of Hypostomus in the NEMO and MAPI ecoregions using integrative taxonomy, and to discuss the diversification of the genus in drainages in the northeast semiarid. Based on our results, Hypostomus carvalhoi, H. jaguribensis, H. nudiventris, H. papariae and H. salgadae are junior synonyms of H. pusarum. The geographical distribution of H. pusarum was expanded
    to MAPI, and two new species of the genus were revealed for this ecoregion and were described here. We provided data on the distribution of species of the genus in the studied ecoregions, and recorded the occurrence of a total of six species of Hypostomus (H. johnii, H. pusarum and H. vaillanti, two described in this study and another possible new species) in the MAPI ecoregion. The results indicate that the species richness of the genus in NEMO is overestimated, while in MAPI it is underestimated. We verified phylogenetic relationships between a group of NEMO and MAPI species with species from the Amazon and Guyana regions, as well as past relationships between these ecoregions with the SAFR, as well as the latter with the tributaries of the La Plata system, in addition as concluding that the color pattern of the species is not very informative about the phylogenetic relationships. Our biogeographic inferences suggest that there were at least two invasions in MAPI and NEMO, and at least three in SAFR, and the processes that acted in the diversification of the majority of Hypostomus species in the northeast semiarid region were the headland capture events. According to our results, the species diversified between the late Miocene and the Pliocene, which coincides with the period of lowest temperatures on the globe, a condition that possibly led to the expansion of the semiarid areas of the region.

5
  • LUCIANO DE FREITAS BARROS NETO
  • Integrative taxonomy and biogeography of small armored catfishes in subfamily Hypoptopomatinae (Siluriformes: Loricariidae) from
    Northeastern Brazil

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • ADRIAN ANTONIO GARDA
  • PRISCILA CAMELIER DE ASSIS CARDOSO
  • ROBERTO ESSER DOS REIS
  • WALDIR MIRON BERBEL FILHO
  • Data: 05-jun-2020


  • Resumen Espectáculo
  • The Northeastern region of Brazil, which includes five distinct hydrographic ecoregions, is suitable for river capture mainly due to
    lithological and geological characteristics as well as successive fault reactivation phases. However, the biogeographic history of neotropical watersheds in this region remains poorly understood despite their high level of fish endemism. The genus Parotocinclus presents high richness of endemic species in region, with species with restricted distribution to only one basin and others with wider distribution, occurring in some ecoregions. In this sense, unravel the evolutionary history of the genus Parotocinclus can help to elucidate the processes that structured the genetic variation of freshwater fish in these coastal basins. However, the validity of some species is questioned. Moreover, most descriptions of species of genus are old and little informative, and do not present diagnostic characters that enable the recognition of specific complexes. Thus, some other authors considered P. cearensis and P. cesarpintoi as junior synonym of P. spilosoma. However, tests performed with material recently collected in type localities, as well as type series data, revealed some morphological characters that can be used to differentiate these species. Phylogenetic analyzes with molecular data were made to contrast with morphological and biogeographic data. As a result of integrative analysis (morphology and molecular), in first chapter the validity of Parotocinclus cearensis was confirmed by differentiating it from P. spilosoma and P. cesarpintoi. The redescriptions of P. cearensis, P. cesarpintoi and P. spilosoma are presented, adding new diagnostic characters. In second chapter are observed the relationships of species, identified possible new species, as well being investigated the diversification of lineages of genus in Brazilian Northeast. It was also evaluated which events may be associated with bioogeographic patterns. In third chapter, a new genus for subfamily Hypoptomatinae is described, with four new species being described, corroborated by morphological and molecular data, besides presenting geographic isolation.

6
  • MARIANA RAMOS FANTINATI
  • Molecular phylogeny and evolution of subtribe Cereinae (Cactoideae, Cactaceae)

  • Líder : ALICE DE MORAES CALVENTE
  • MIEMBROS DE LA BANCA :
  • ALICE DE MORAES CALVENTE
  • BRUNO FRANCISCO SANT’ANNA DOS SANTOS
  • LEONARDO DE MELO VERSIEUX
  • PÂMELA LAVOR ROLIM
  • RAFAEL BATISTA LOUZADA
  • Data: 24-jul-2020


  • Resumen Espectáculo
  • In the light of a recent phylogenetic review, Cereinae was proposed as one of the three subtribes of tribe Cereeae s.l., which includes most of South American columnar cacti lineages in Cactoideae. Current Cereinae comprises species in 14 genera with a remarkable occurrence in eastern Brazil, mainly in dry forest formations such as Caatinga. Nevertheless, the circumscription of the group is still quite controversial, generic delimitations are problematic, and the knowledge of the anatomy of species is incipient. The aims of this study were to test the monophyletism of Cereinae based on multigenic data and in a broad sampling, evaluate the subtribe systematics, in particular the generic circumscriptions, and survey potential diagnostic and phylogenetic anatomical traits of the dermal system and part of the fundamental system of representatives of 11 genera of the subtribe. The results point to a monophyletic Cereinae with high support in Bayesian, maximum parsimony, and maximum likelihood analyses based in combined matrices, and expand the knowledge of generic relationships within the subtribe. Regarding the morphological analyses results, some skin features are informative for some groups within the subtribe, such as the markedly plicate cell outline shared by all Melocactus species, the abundant prismatic crystals in the epidermal cells shared by all species of Arrojadoa and Stephanocereus, the presence of druses with the round-oval-shaped outline in the spongy parenchyma shared by all species of Cereus and Cipocereus, and the combination of druses with the round-oval-shaped outline and in concretions in the spongy parenchyma shared by Cereus species. These groups emerge as clades strongly supported by Bayesian analyses in our phylogeny, demonstrating the relevance of anatomical characters for taxonomy. Our results showed novelties both in the anatomy of the species and in the phylogeny of Cereinae as a base of future investigations in a systematic framework also serving to support the study of
    the evolutionary history and patterns of South American dry forests and the associated biota as a whole.

2019
Disertaciones
1
  • ORQUIANNE JUDY RAFAEL SIQUEIRA
  • New Species of Entomobryoidea (Collembola, Entomobryomorpha) in the Caatinga area of the Chapada Diamantina, Northeast Brazil

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • RENATA ANTONACI GAMA
  • NERIVÂNIA NUNES GODEIRO
  • Data: 11-feb-2019


  • Resumen Espectáculo
  • Springtails are very diversified microarthropods, often found in the soil. They are members of the edaphic mesofauna, where they compose the basis of soil food chain, as well as they act in the cycling of nutrients and organic matter decomposition. Considered as bioindicators of soil quality, they provide rapid responses to environmental variations, including those associated with anthropogenic action. The superfamily Entomobryoidea is the richest in species among the Collembola, being constituted mainly by epiedaphic species, with Entomobryidae and Paronellidae as its main families, both well represented in Brazil. The focus of this study was to identify and describe new species following specialized literature, in addition to expanding the list of taxa records for the region. The collections were carried out in Bahia State, in the municipalities of Abaíra, Andaraí and Lençóis, using pitfall traps and entomological aspirators to capture specimens directly from the substrate. In the laboratory it was performed the screening, morphotyping and assembly of the individuals in slide for microscopy. Four new species were described: Dicranocentrus sp. nov.; Entomobrya sp. nov.; Seira (Lepidocyrtinus) sp. nov. and Trogolaphysa sp. nov. These species were compared for distinctive morphological aspects such as colour pattern, number of spines of the metatrochanteral organ, dorsal head and body chaetotaxy, and also the chaetae composition of the labial region. The results point out Chapada Diamantina as a rich region to the Entomobryoidea fauna, possibly with more new species to be described. This survey promotes the knowledge of the group in Caatinga areas and, consequently, leads to a greater understanding of biodiversity in this biome. In addition, this taxonomic study generates data that can make viable the realization of future conservation measures.

2
  • RENAN DE LIMA OLIVEIRA
  • Taxonomy of gasteroid fungi (Basidiomycota) in caatinga areas of Rio Grande do Norte and Paraíba, Brazil

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • PAULO SERGIO MARINHO LUCIO
  • THIAGO ACCIOLY DE SOUZA
  • Data: 18-feb-2019


  • Resumen Espectáculo
  • It is estimated that there are about 3.8 million species of fungi, of which about 120,000 have been described to date. Gasteroid fungi currently represent a polyphyletic group with about 10,000 species, of which 324 species are known and described for Brazil. Since ancient times, the gasteroid fungi have demonstrated important value being used by the humanity for diverse purposes like economic, medicinal, forestry and gastronomic. The Caatinga, the focus of this research, has been described as a poor ecosystem in species and endemism. However, recent studies have challenged this point of view and demonstrated the importance of the Caatinga for the conservation of Brazilian biodiversity. In this context, the present study aimed to increase the knowledge of the gasteroid fungi in two areas of biological importance in the Caatinga phytogeographic domain in the states of Rio Grande do Norte (Serra do Torreão - João Câmara) and Paraíba (Serra de Cuité - Cuité). For this, 12 field trips were carried out in the periods with the highest rainfall incidence (February to July 2017 and March to April 2018). The collection methodology was based on specialized literature of the group. The collected basidiomas were taken to the fungal biology laboratory of the Federal University of Rio Grande do Norte (UFRN), where the herborization and study of the specimens were carried out following the traditional methodology for the gasteroid fungi. Scanning electron microscopy (SEM) in species requiring greater morphological detail. It was identified 19 species distributed in eight genera: Bovista (2 spp.), Calvatia (5 spp.), Cyathus (2 spp.), Disciseda (2 spp.), Geastrum (2 spp.), Podaxis (1 sp.), Sphaerobolus (1 sp.) and Tulostoma (4 spp.). Of these, four are new species for science, four are first records for South America, nine first records for Brazil, a second record for Brazil, twelve first records for the semiarid, three second record for the semiarid, three first records for the state of Paraíba, twelve first records for Rio Grande do Norte and four are second record for Rio Grande do Norte. The Serra do Torreão and the Serra de Cuité have been shown to be favorable for studies of gasteroid fungi. Thus, additional taxonomic studies are necessary in areas of Caatinga, allowing an increase in the conservation of these species.

3
  • MARCOS JOSÉ DO NASCIMENTO JÚNIOR
  • Taxonomic review of Seirinae (Collembola, Entomobryidae) in urban remaining of Atlantic Forest in Rio Grande do Norte - Brazil

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • DOUGLAS ZEPPELINI FILHO
  • NERIVÂNIA NUNES GODEIRO
  • Data: 25-feb-2019


  • Resumen Espectáculo
  • The northeastern region of Brazil, specifically Rio Grande do Norte state, holds several spots of Atlantic Rainforest with potentially large biological diversity, nevertheless still with a quite limited number of registers of springtails, particularly, of the subfamily Seirinae. At the same time, urban remnants of forested areas present great anthropic influence and the recognition of this diversity is the first step for their maintenance. This study had for main objective to perform a taxonomic study of the Seirinae species in such urban remnants, through the analysis of specimens deposited at the Collembola Collection of UFRN, collected between the July 2012 to July of 2017 with entomological aspirators and pitfall traps. Four species of Seira were redescribed in detail: S. paraibensis, S. arenicola, S. harena and S. brasiliana. S. dapeste, recently described from the study area was also included in the study. S. arenicola when compared with S. brasiliana, S. coroatensis and S. mataraquensis is dissimilar especially in number of macrochaetae on dorsal head as well as in the quantity of spines of the metatrocanteral organ. S. paraibensis was compared with another three species: S. harena, S. dapeste and S. diamantine signaling differences in the number of macrochaetae on “An” series of the cephalic chaetotaxy and quantity of spines on metatrocanteral organ. S. harena compared to S. dapeste, S. diamantinae and S. prodiga differs in the quantity of the macrochaetae of cephalic region, Abd I, Th III, pseudopores in the manubrial plate and thorns on metatrocanteral organ. S. potiguara was identified as a junior synonym of S. brasiliana and it was compared with S. arenicola, S. jiboiensis e S. tinguira, and all species differ in number of the macrochaetae of Abd II and ventral tube chaetotaxy. This study contributes with the increase of knowledge of Entomobryoidea fauna from Northeastern region of Brazil, producing metadata which can be used for maintenance of Parque Estadual Dunas do Natal.

4
  • JOSEMÁRIA SILVA DE FRANÇA
  • New species of Nothobrya Arlé, 1961 (Collembola, Entomobryidae)

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • DOUGLAS ZEPPELINI FILHO
  • NERIVÂNIA NUNES GODEIRO
  • Data: 25-feb-2019


  • Resumen Espectáculo
  • Collembola holds small arthropods, commonly found on soil, living in humid environments rich in decaying organic matter. Entomobryidae gathers the most diversified and numerous forms of the group, and its current systematics includes seven subfamilies. Nothobrya Arlé is inserted in the subfamily Nothobryinae, being characterized by the presence of post-antennal organ; absence of body scales; 8 + 8 eyes; antennae with six segments (first and second segments subdivided); and trochanteral organ with 4–15 chaetae. The genus is currently represented by two described species: N. schubarti Arlé and N. arlei Silveira & Mendonça, recorded from Piauí, Pernambuco and Rio de Janeiro States. The two descriptions of N. schubarti are poorly detailed, lacking information about dorsal head and body chaetotaxy, while N. arlei has some omissions in the dorsal chaetotaxy description and nomenclature of the chaetae, as well as in the morphology of labial triangle and dorsal manubrium. This study consists in the description of two new species of Nothobrya, presenting new morphological information to the genus previously unknown. The collections were made in two municipalities: Jardim do Seridó, Rio Grande do Norte and Porto Velho, Rondônia, using pitfall traps and entomological aspirators. The specimens were analyzed and described using specific literature. Nothobrya sp. nov. 1 and Nothobrya sp. nov. 2 differs from known species of the genus in the number of dorsal chaetae and resembles these species by the colour pattern and habitus. However, Nothobrya sp. nov. 1 differs from Nothobrya sp. nov. 2 by the number of spine-like chaetae in the trochanteral organ, chaetae in the tenaculum, morphology tenent hair shape. Nothobrya sp. nov. 1 and Nothobrya sp. nov. 2 also differs from Nothobrya arlei by number of dorsal chaetae and the body sensillae formula plus anterior and posterior collophore chaetotaxy. This study contributed with the description of two new species to the genus Nothobrya, adding detailed morphological information to the taxon. Additionally, the record and description of new species allows the planning and efforts related to future actions in the environmental conservation field

5
  • MATEUS GERMANO SOUZA LIRA
  • The amphibious fishes of the Kryptolebias marmoratus complex (Cyprinodontiformes: Cynolebiidae) in the neotropical mangroves: natural history, geographic distribution and evolutionary ecology

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • CARLOS EDUARDO ROCHA DUARTE ALENCAR
  • FELIPE CAMURUGI ALMEIDA GUIMARÃES
  • SERGIO MAIA QUEIROZ LIMA
  • Data: 26-feb-2019


  • Resumen Espectáculo
  • The family Cynolebiidae, belonging to the family Cyprinodontiformes, was annulled as Rivulidae, is best known for the peculiar species of anise, which makes up a diverse group of small mammals that live in aquatic or glassy environments. With about 350 valid species and companies, the distribution of continental microhabitats, in all streams and shallow freshwater marshes, with roots of species in brackish waters. The non-series ranges are in a monophyletic group of the genus Kryptolebias, composed of seven valid nominal species, occurring in Florida in the United States to Santa Catarina in Brazil. Within the genus, the group of species K. marmoratus (K. hermafrodito, K. marmoratus and K. ocellatus), exclusive of estuarine regions, stand out. These lines have a liquid taxonomy, with diagnostic and distribution in the genesis, based on incompatibility of information on an important factors. A recent study with morphological data suggested that two sibling species, K. marmoratus (known from the US and Caribbean) and K. hermaphrodites, the only known self-fertilizing vertebrates, improvised in southeastern and southeastern Brazil, respectively. In addition to morphological differences between species of the Brazilian coast, other ecological aspects were pointed out, related to the distance of the sea and aspects of the microhabitat, as well as the geographic gaps (Bahia and Sergipe and west of Rio Grande do Norte) between geographic themselves. However, a large molecular study indicated that the complex is formed by three variants, with only one sample along the mangroves of the Brazilian coast. The latest data were performed in terms of morphological and ecological data, so that the data has been corrected in the country, and its geographic distribution, as well as providing original ecological data of these lines. Locations with data and online database, including a locality type, were cataloged as well as new records, including some protected areas. All the collections were done in an active way, with hand sieves, in addition to collections with standardized effort, delimited parcels, environmental data and monitoring of fauna, to provide ecological information. With the dates of contact to date, as areas of incidence of the species of the K. marmoratus complex for Brazil were expanded. The southern clade boundary (K. hermafrodito) was expanded about 300 km to the south, at ESEC Jureia-Itatins in São Paulo, and from the Central Clado of approximately 1,590 km to the south, in the Marajó river basin, in Pará. New records were made beyond Pará, in Piauí, Ceará, Sergipe, Bahia, Sergipe, thus covering a gap in northern and northeastern Brazil, ruling out a hypothesis that the absence of records indicates the existence of a barrier between K. marmoratus in northeast and K. hermaphrodito of the Southeast. The herdability of hermaphroditus, which individual affairs, pheneview male, the beenised by locality of Southeast that its read data computed extremes, or that shall a hypothesis of an a loss of the ambience in case in the primary machous. In Rio Grande do Norte, a single secondary male was collected in 2015, during a period of more than six years of visits to the mangrove swamp. The supposed emission gaps in Brazilian countries are in fact pointed out by a large number of gemstones, but they occupy a specific micro-fact, composed of traits, de-insurances and neglected by ichthyologists, corroborating a lack of invent in the intertidal areas in the mangroves. These amphibian hermaphrodites are broadwed from the 19th century in Brazil, they are the first standardized ecological data of K. hermaphroditus, a species that for its reproductive and physiological peculiarities presents high potential for experimental and environmental studies. The molecular data pointed to a greater genetic extension in the northeastern wings, and a non-oceanic homogeneous end with a single haplotype, besides indicating the individuals of Pará are inserted in the center, presenting a presence of two distinct species of the K. marmoratus complex in the north of Brazil. Three regimes were included in the Brazilian coast associated to the tide regimes (macrotidal north, mesotidal northeast, and microtidal southeast). Thus, as the morphological differences in the study may include a separation of spaces, at the same time as the territory of a nation, the southeast and northeast, which may be being enhanced by the peculiar individual reproduction of this group of vertebrates.

6
  • EDUARDO CALISTO TOMAZ
  • Taxonomy and biogeography of Bromeliaceae in the Northern distribution of the Caatinga and Atlantic forest of Brazil

  • Líder : LEONARDO DE MELO VERSIEUX
  • MIEMBROS DE LA BANCA :
  • LEONARDO DE MELO VERSIEUX
  • GARDENE MARIA DE SOUSA
  • LEANDRO DE OLIVEIRA FURTADO DE SOUSA
  • RAFAEL BATISTA LOUZADA
  • Data: 27-feb-2019


  • Resumen Espectáculo
  • Bromeliaceae is a natural group widely distributed in the Neotropics and recognized mainly by the extremely reduced stem and alternate-spiraled leaves. Of the approximately 3,630 known species, 1,177 are exclusively Brazilian. Northeastern Brazil has a significant richness, potential for the discovery of new taxa and an alarming state of conservation, which makes it essential to carry out studies with the family in that region. Thus, this work aims to analyze biogeographical patterns of bromeliads in a portion of Northeast Brazil and to describe their taxonomic diversity, with emphasis on the states of Ceará (CE) and Rio Grande do Norte (RN), seeking to contribute to conservation measures. Using 2,671 georeferenced records compiled from online platforms, we analyzed richness, collection density, endemism, and how environmental variables influence the distribution of bromeliads in a freshwater ecoregion. For the taxonomic treatments, expeditions were carried out for collection, observation of ecological, phenological and geographical distribution aspects, and five herbaria were visited to complement the morphological analysis. Our sample recorded 23 genera and 108 species in the studied area. Thirty-nine species were registered in CE, with two new occurrences and one of variety, besides 26 species for RN, of which four are new occurrences. Mean annual precipitation and altitude are important factors that affect the richness and distribution of the genera in the studied area, making the Atlantic Forest the domain with greater richness, collection density and endemism. On the other hand, a belt of low rainfall may be acting as a geographic barrier to moisture-dependent genera. We conclude that the two states in fact possess underestimated richness and that the richness and endemism of Bromeliaceae in the study area as a whole are linked to fragments of wet forest or high-altitude regions, which should be considered priority areas for the conservation of the group.

7
  • SIMIÃO ALEFE SOARES DA SILVA
  • Evolutionary dynamics of rDNA in chromosomes of the Eleotridae family and notes on karyotype evolution in Gobiiformes (Osteichthyes, Teleostei)

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • CLÓVIS COUTINHO DA MOTTA NETO
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • Data: 27-feb-2019


  • Resumen Espectáculo
  • The order Gobiiformes is composed of 9 families, 268 genera and 2,210 species, representing one of the most diversified groups among teleosts. The high species diversity in this group is accompanied by significant karyotype diversity. In fact, although the cytogenetic data are still very scarce (5% of the species), they reflect the rich evolutionary history of this group. The association of the karyotype diversity of this group with possible biological parameters promotes diversification has not yet been fully established. Among the less diversified families is the family Eleotridae, with 23 genera and 171 species. In the Brazilian Atlantic coast this group is formed by only 6 species, inhabiting rivers near the coast and estuarine regions. In order to increase the cytogenetic data for the group, four species of the family Eleotridae (Dormitator maculatus, Eleotris pisonis, Erotelis smaragdus and Guavina guavina) were analyzed in the South Atlantic. Cytogenetic analyzes included conventional methodologies (Giemsa staining, impregnation base-specific (MM / DAPI) staining, in situ hybridization with 18S and 5S DNAr fluorescent probes and CAA and CA sequence microsatellites. Three species presented 2n = 46 chromosomes and one presented 2n = 52, with some variation in karyotypes. So while Er. Smaragdus, E. pisonis and G. guavina presented only acrocentric chromosomes (NF = 46), (NF = 52) respectively, D. maculatus exhibits karyotype formula with 36sm + 4st + 6a (NF = 86). Ag-RON sites occur in a single chromosomal pair in Er. smaragdus (par 10), E. pisonis (par 21), D. maculatus (par 4) and G. guavina (par 19). The heterochromatic pattern in E. pisonis and G. guavina is preferably centromeric, while in Er. smaragdus and D. maculatus, heterochromatic blocks can occur in the centromeric, pericentromeric and terminal regions of the chromosomes. The 18S rDNA sites correlate with Ag-RONs and showed some evolutionary stability between species. On the other hand, 5S rDNA sites revealed considerable variation among the species of these genera of Eleotridae. In fact, they occur in two acrocentric pairs in E. pisonis, they are co-located with 18S rDNA sites in the interstitial portion of pair 21 in Er. smaragdus and duplicates were found, in G. guavina common markings were found in teleosteis, and a remarkable structural polymorphism was found in D. maculatus. In this last species the DNAr sites presented two patterns of organization. While some individuals show single sites of 18S rDNA and 5S rDNA in two different chromosome pairs, other individuals presented karyotypes with one chromosome carrying a 18S rDNA site, one chromosome with a 5S rDNA site, and a third chromosome with 18S and 5S rDNA sites co-located . Although macroscopic (D. maculatus) or internal arrangement of ribosomal sequences (D. maculatus, E. pisonis and Er. Smaragdus) indicate a strong participation of chromosomal inversions in the karyotype evolution of the family.

8
  • HIPÓCRATES MATHEUS JOSÉ DA SILVA FORTUNATO
  • Integrative taxonomy of Streptoprocne biscutata (Sclater, 1866) (Birds: Apodidae) in Brazil

  • Líder : MAURO PICHORIM
  • MIEMBROS DE LA BANCA :
  • MAURO PICHORIM
  • SERGIO MAIA QUEIROZ LIMA
  • GUILHERME GERHARDT MAZZOCHINI
  • Data: 27-feb-2019


  • Resumen Espectáculo
  • In 1991, H. Sick described the subspecies Streptoprocne biscutata seridoensis based on specimens collected from a colony in the state of Rio Grande do Norte. The diagnosis of this subspecies is based exclusively on differences in wing and tail size of that population compared to those in southern and southeastern Brazil. However, subspecies that represent only arbitrary sections of a cline should not be considered as evolutionarily distinct entities. The differences pointed out by the author between these two populations of Streptoprocne biscutata were not justified by any statistical test. Therefore, the objective of this work was to verify statistically if the subspecies S. b. seridoensis has measures smaller than S. b. biscutate is intended to verify whether or not they are a gradual variation along a latitudinal gradient. To verify if the subspecies have different sizes, we compare the measures between S. b. seridoensis and S. b. biscutata. The measures analyzed were wingspan, total length, wing (flat), tail, weight, tarsus and exposed culmen. The subspecies S. b. biscutata obtained larger averages: wingspan, total length, weight, wing, tail and tarsus, an influence of latitude was also identified on all the morphometric measures. Considering that the differences in morphology and weight observed between populations represent only clonal variations, we suggest that the classification of the subspecies category based only on this criterion be repealed.

9
  • NATHALIA MENDONÇA DE ASSIS
  • Systematics and Taxonomy of Gasteroides Fungi (Basidiomycota) in Southern Amazonia, Brazil

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • PAULO SERGIO MARINHO LUCIO
  • THIAGO ACCIOLY DE SOUZA
  • Data: 07-mar-2019


  • Resumen Espectáculo
  • The Amazon Rainforest is the largest tropical rainforest in the world, with high biodiversity of organisms. In relation to fungi, mainly the gasteroids, this biodiversity is little known. Gasteroid fungi belongs to the phylum Basidiomycota. They are recognized by the maturation of basidiospores inside the basidioma and by the passive release of spores. The Amazonian domain in the State of Mato Grosso, Brazil, is located in a region known as "deforestation arc", where the agricultural frontier advances towards the forests. This region encompass the highest rates of deforestation along the entire Amazonian domain. This corroborates the urgency of research establishment in the region, both to exploit this little-known biodiversity and to delineate effective conservation strategies. This work aims to investigate gastrophobic fungi species in forest areas in the state of Mato Grosso, through taxonomic studies of collected specimens and bibliographic review. During the rainy season of 2017 and 2018 (February and March, respectively), field trips were made to collect the basidiomas at the study areas.  The basidiomas were photographed, described and illustrated macro- and microscopically. The data obtained are 14 species of the genus Geastrum, Cyathus, Morganella, Phallus and Xylophallus. From the species identified, two are a new species (Geastrum hialimum e Geastrum sp. nov.) and Geastrum pusillipilosum, G.albonigrum, G.entomophilum, G.javanicum, G.schweinitzii, G. rusticum, G.javanicum, G.triplex, Lycoperdon fuligineum, Phallus indusiatus, Cyathus amazonicus and Xylophallus xylogenus constitute new records for the State of Mato Grosso. G. pusillipilosum and G. rusticum are new records for the Amazonian domain.

10
  • ALEF KENNEDY ROCHA DA SILVA
  • Ostracoda (Arthropoda, Crustacea) from the continental shelf off Rio Grande do Norte state, Brazil

  • Líder : SIMONE NUNES BRANDÃO
  • MIEMBROS DE LA BANCA :
  • SIMONE NUNES BRANDÃO
  • EMANUELLE FONTENELE RABELO
  • MARIANA SANTANA SANTOS PEREIRA DA COSTA
  • Data: 22-ago-2019


  • Resumen Espectáculo
  • The class Ostracoda has one of the most diverse and abundant fossil records among all animals, as well as a wide stratigraphic distribution (from the Ordovician to the Recent) and cosmopolitan geographical distribution. For these characteristics the group is widely used as an ecological and paleoecological indicators. This Master Thesis aimed to at performing a taxonomic survey of the Ostracoda fauna in the northern continental shelf of Rio Grande do Norte state, Northeast Brazil, as well as to investigate ecological aspects of this fauna. Twenty-one samples were collected with a Van Veen gral from the internal and external platform regions off the Açu River. A total of 63 species, 31 genera and 16 families were identified. Hemicytheridae was the family with the highest genus richness and also with the highest abundance (number of valves / 100g of dry sample). Pellucistoma Coryell & Fields, 1937 and Bythocythere Sars, 1866 were the most abundant genera. Neonesidea Maddocks, 1969, Semicytherura Wagner, 1957 and Paracytheridea Mueller, 1894 presented the highest species richness. Based on the Ostracoda assemblages, the internal and external regions of the platform were significantly different. Of the 31 genera present in the samples, nine were found only in the external region, four were found only in the internal region and 18 were common to both regions. Among the environmental variables analyzed, depth and sediment type were the factors that best explained the current distribution of benthic marine ostracodes along the internal and external regions of the northern continental shelf of Rio Grande do Norte state, Northeastern Brazil.

Tesis
1
  • JULIETH DE OLIVEIRA SOUSA
  • REVISION OF THE FAMILY GEATRACEAE CORDA (GEASTRALES, BASIDIOMYCOTA) EMPHASIZING NEOTROPICAL SPECIES

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • BIANCA DENISE BARBOSA DA SILVA
  • BRUNO TOMIO GOTO
  • IURI GOULART BASEIA
  • RAQUEL CORDEIRO THEODORO
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 26-feb-2019


  • Resumen Espectáculo
  • About 97% of fungi species have not been described by science, although the identification being the basis for many applicate studies (ex: bioprospecting, evolution, ecology, conservation). Barcodes have been very useful to species delimitation. Mainly for gasteroid fungi (Basidiomycota), the Internal Transcribed Spacer of DNA (ITS) has demonstrated to be very efficcacy to discover hidden diversity.  The family Geastraceae is constituted by the gasteroid genus Geastrum and Myriostoma, being the specimens popularly known as earthstars. Although it is one of the richest families in the phylum, the knowledge about the diversity of this family has gaps, especially in the Neotropical region, where there are megadiverse countries, “hotspots” and tropical ecosystems, which have high potential to shelter hidden diversity. Thus, this study aimed to review collections of family Geastraceae, emphasizing those with Neotropical distribution. Two hundred and fifteen samples from ten distinct international and national fungal collections were studied, which 14 of these are type collections. The methods consisted in a deep revision of morphological characters, besides the molecular phylogentic analyses of the DNA regions ITS, LSU, ATP6, RPB2 e TEF1α, following Maximum Parsimony, Maximum Likelihood and Bayesian analyses. There were generated 186 new sequences, which were compared with 294 homologue sequences from GenBank data. Twelve news species of Geastrum were described:  G. laevisporum J.O. Sousa & Baseia; G. pusillipilosum J.O. Sousa et al.; G. verrucoramulosum T.S. Cabral, J.O. Sousa & Baseia; G. magnosporum J.O. Sousa et al.; G. caatingense J.O. Sousa, M.P. Martín & Baseia; G. parvistellum J.O. Sousa, M.P. Martín & Baseia; G. baculicrystallum J.O. Sousa et al.; G. brunneocapillatum J.O. Sousa et al.; G. courtecuissei P.-A. Moreau & C. Lécuru, G. neoamericanum J.O. Sousa et al.; G. rubellum P.-A. Moreau & C. Lécuru; G. rubropusillum J.O. Sousa et al. For the genus Myriostoma, two new species were described: M. calongei Baseia, J.O. Sousa, & M.P. Martín and M. australianum J.O. Sousa Baseia & M.P. Martín; moreover, two new combinations were proposed: M. areolatum (Calonge & M. Mata) M.P. Martín, J.O. Sousa & Baseia and M. capillisporum (V.J. Stanek) L.M. Suz et al.; the epitype for the genus was elected. The data generated by this revision changed the systematic interpretations about the family Geastraceae and it was possible to enhance the knowledge about the richness of this family.

2
  • RICARDO AMBRÓSIO SOARES DE PONTES
  • Taxonomic revision, conservation and morphoanatomy of Araeococcus Brong. (Bromeliaceae, Bromelioideae)

  • Líder : LEONARDO DE MELO VERSIEUX
  • MIEMBROS DE LA BANCA :
  • GARDENE MARIA DE SOUSA
  • LEANDRO DE OLIVEIRA FURTADO DE SOUSA
  • LEONARDO DE MELO VERSIEUX
  • RAFAEL BATISTA LOUZADA
  • RAFAELA CAMPOSTRINI FORZZA
  • Data: 27-feb-2019


  • Resumen Espectáculo
  • Araeococcus Brong. is a small and rare genus of Bromeliaceae that is placed in core of the subfamily Bromelioideae. Here we provide its taxonomic revision through an extensive morphological, taxonomic and anatomical work in thesis structured in six chapters. Araeococcus has morphological affinities with Lymania Read, being distinguished mainly by the absence of lateral folders in the petal, antipetalous petal stamen adnate to the petal and morphology of the ovary and fruit. It is endemic to the Neotropical region, occurring in Costa Rica, Panamá, Colombia, Trinindad-Tobago, all of the Amazonian região and in the Northeastern Atlantic Forest. Araeococcus is epiphytic, or more rarely terrestrial, occurring in conserved humid and semi-deciduous forests. Historically, two distinct morpho-biogeographical groups (Araeococcus subgenus Araeococcus and Araeococcus subgenus Pseudaraeococcus) are accepted, based on the presence or absence of pedicellate flowers. This character has shown to be artificial and of weak value for taxonomy. The group appears either as polyphyletic, sometimes as monophyletic, and its evolutionary history is still uncertain but at least two clades are resolved. Six field expeditions were carried out, two for the Amazon forest (Amapá, Roraima and Amazonas) and four for the Atlantic forest (Paraíba, Pernambuco, Alagoas and Bahia). The herbaria HAMAB, INPA (Amazonas), CEPEC, HURB (Bahia) and RB, HB and R (Rio de Janeiro) were visited, as well as loans from other herbaria (NY, UFP, ALCB, CEN, UFMT, MG) were analyzed, as well as virtual visits to online collections. A total of 300 specimens were analyzed, of which nine species were recognized as traditionally established but with an expanded morphological characterization. Four new species for the group are being proposed (A. serranensis, A. longipedicellatus, A. prancei and Araecoccus sp. nov.), Totaling 14 taxa, with a 55% increase in the number of known species. A new species (A. lageniformis) has been proposed and accepted for publication. The external morphology showed to be useful to segregate the two subgenera, by the foliar architecture, type of vegetative reproduction, stigmas morphology, seed surface morphology. Two neotypifications (Araeococcus micranthus and A. flagellifolius) were also performed and one amendment to the original description. Anatomic studies (light microscopy and scanning electron microscopy) of leaves and flowers were performed. The anatomy revealed that the density and morphology of the trichomes on the leaf surface, the arrangement of the stomata, occlusion of the sub-stomatic chambers and distribution of the fibers in the mesophyll are useful characteristics to separate the subgenera. Given the morphological, anatomical and biogeographic evidences, we propose here the segregation of the genus Araeococcus, raising the subgenus Pseudaraeococcus to the category of a new genus. Diagnostic morphological characteristics, habitat, observations on conservation, geographic distribution were analyzed. Identification keys, illustrations, geographic distribution maps, photographic and line drawings plates of the species and details of flowers, bracts and seeds are presented.

3
  • RUDY CAMILO NUNES
  • Taxonomic survey of Entomobryoidea (Arthropoda: Collembola) in priority areas for the Caatinga biodiversity conservation

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • NIKOLAS GIOIA CIPOLA
  • BRUNO CAVALCANTE BELLINI
  • DOUGLAS ZEPPELINI FILHO
  • RENATA ANTONACI GAMA
  • TACIANO DE MOURA BARBOSA
  • Data: 26-ago-2019


  • Resumen Espectáculo
  • Collembola are small arthropods widely distributed all over terrestrial ecosystems, with a body size ranging between 0.12 and 17 mm, and about of 9,000 described species in the world. Entomobryoidea is the largest Collembola superfamily, encompassing Microfalculidae, Entomobryidae and Paronellidae, with only the last two recorded from Brazil, where the Collembola taxonomic richness is subestimated, with about of 291 recorded species. Caatinga is among the less sampled Brazilian domains, although it comprises a huge diversity of environments and microhabitats, forming a mosaic of different types of deciduous vegetation with high endemism rates. In Collembola, morphology is the primordial source of taxonomic characters and the study of the dorsal chaetotaxy is almost universally used as a preponderant character. In this study, four priority areas for the Caatinga biodiversity conservation were sampled, all of them with very few information about Collembola: Serra da Capivara, Serra das Confusões and Sete Cidades National Parks, and Picos municipality, all these areas in the Piauí State. At the end of this study it was possible to delineate an initial profile of the Entomobryoidea fauna in the sampled areas, providing an inventory of species occurring in these areas and their distribution. Eight new species were described: Capbrya sp. n., Cyphoderus equidenticulati Nunes and Bellini, Lepidosira neotropicalis Nunes and Bellini, Nothobrya sertaneja Nunes and Bellini, Pseudosinella triocellata Nunes and Bellini, Seira sp. nov.1, Seira sp. nov.2 and Trogolaphysa piracurucaensis Nunes and Bellini. Identification keys were provided for the Brazilian species of Cyphoderus, Pseudosinella and Trogolaphysa, for the Neotropical genera of Entomobryinae, for the known species of Nothobryinae, and for the Entomobryoidea species from the four sampled areas. Records of Entomobryoidea from the studied areas went from 4 to 22 species, 9 genera, 6 subfamilies and 2 families. After an extensive bibliographic revision, we proposed a new diagnosis for Lepidosira, described the complete dorsal chaetotaxy of a species of this genus for the first time, and proposed a hypothesis of phylogenetic positioning based on two nuclear (18SrRNA and 28SrRNA) and one mitochondrial (COI) markers, corroborating the transfer of the Lepidosira-group from Seirinae to Entomobryinae for the first time. We also elucidate key characters for the Nothobryinae systematics and proposed its division in two tribes (Capbryini and Nothobryini), and their inclusion in the subfamily Orchesellinae, invalidating Nothobryinae as an independent subfamily.

4
  • MARIA APARECIDA FERNANDES
  • Cariogenomic evolution in reef fish of families Acanthuridae (Acanthuriformes) and Holocentridae (Holocentriformes)

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • CLÓVIS COUTINHO DA MOTTA NETO
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • KATIA CASTANHO SCORTECCI
  • PAULO AUGUSTO DE LIMA FILHO
  • WAGNER FRANCO MOLINA
  • Data: 30-ago-2019


  • Resumen Espectáculo
  • The families Acanthuridae and Holocentridae are groups of marine fish with high representation in coral reefs, where they play important ecological functions in environmental balance. Biological, phylogeographic and taxonomic aspects of these families are widely known, however, their cytogenetic aspects are incipient. In order to increase the knowledge about karyotypic evolution and possible interpopulation cytogenetic variations, four species of Acanthuridae (A. coeruleus, A. bahianus and A. chirurgus - Western Atlantic; and Acanthurus triostegus - Indo-Pacific) and three Holocentridae species were analyzed. (Myripristis jacobus, Holocentrus adscensionis - West Atlantic; and Sargocentron rubrum – Indian Ocean). The analyzes used conventional cytogenetic techniques, base-specific fluorochrome staining and repetitive sequence mapping of rDNA 18S, rDNA 5S, histones H3 and H2B-H2A and retrotransposon Rex3 by fluorescence in situ hybridization. In Acanthuridae, A. triostegus showed a karyotypic pattern considered basal for Percomorpha (2n = 48; NF = 48), while West Atlantic species exhibited a sequential karyotypic divergence associated with phylogenetic divergence. Interpopulation variation of 18S rDNA sites was identified between A. coeruleus populations of the Western Atlantic and Caribbean. The mapping of 18S rDNA, 5S rDNA, DNAhis H2B-H2A and H3 sites showed diversified patterns, indicative of a dynamic karyotypic evolution in the Acanthurus genus. Holocentric species M. jacobus and S. rubrum presented 2n = 48 acrocentric chromosomes, while H. adscensionis, 2n = 50 (2m + 6sm + 16st + 26a). In this group the 18S and 5S rDNA sites constitute discriminating cytotaxonomic markers, where Rex elements and microsatellite repeats (GA)15 were co-located. Despite the wide geographical distances, no interpopulation variations were observed in M. jacobus and H. adscensionis. The results indicated a more diverse horotelic evolution in Atlantic Acanthurus species, with more recent colonization in relation to A. triostegus, belonging to the Indo-Pacific, center of origin of this group. While the presence of 2n = 48a karyotypes in Holocentrinae (Sargocentron) and Myripristinae (Myripristis) species, highlights the sharing of a conserved condition in Percomorpha, which among these groups dates back to 50 M.a. and suggests an ancestral condition for the Holocentriformes. These groups of marine fish reveal phylogenetic divergences, but also the maintenance of chromosomal homeologies, and evidence of population variation (A. coeruleus), highlighting the importance of cytogenomic analyzes correlated with biogeographic patterns in understanding karyotypic changes in marine groups.

2018
Disertaciones
1
  • GISLAINE CRISTINA DE SOUZA MELANDA
  • Revision of the genus Blumenavia Möller (Phallales): integration of morphological and molecular data

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • TIARA SOUSA CABRAL
  • BIANCA DENISE BARBOSA DA SILVA
  • Data: 15-feb-2018


  • Resumen Espectáculo
  • Phallales is the order represented by fungi called stinkhorns that use attractive odors and an adhesive gleba to propagate its spores through dispersing agents, mainly arthropods. The genus Blumenavia is a gasteroid fungi. This genus is included in the family Clathraceae. Currently, based on only in morphological data, two species are considered for the genus: Blumenavia rhacodes and B. angolensis, whose type localities are Brazil and Africa, respectively. Two other species, described previously, were considered synonymous by some authors: Blumenavia toribiotalpaensis originally described for Mexico and synonimized with B. rhacodes and B. usambarensis synonimized with B. angolensis. It was verified the inconsistency of the morphological characters used for the delimitation of the species and the scarcity of molecular data, especially of the ITS region. With the objective of reviewing and identify informative characters of the genus and the best species delimitation, the present work was conducted by comparative morphological and molecular studies using ITS, LSU, ATP6, RPB2 and TEF1α sequences from 32 collections from several herbaria, as well a specimen collected from the state of Ceará-BR. For the morphological description of these specimens were analyzed macro and microstructures (rhizomorph, volva, columns, glebiferous and spores) in 5% KOH, Melzer Reagent, 1% Congo Red and Cotton Blue. Seven species for this genus was delimited based on the concatenated results (morphological and molecular, with 42 new sequences generated). Blumenavia rhacodes and B. angolensis manteined, B. usambarensis and B. toribiotalpaensis were reconsidered here, and three new species are proposed for the genus. The characters: arms color and thickness, as well as the presence of grooves on their faces; shape and arrangement of glebifers; size and shape of basidiospores; hyphae of apical exoperium and criytals in peridium layers were defined as relevant for segregation and delimitation of species within the genus.

2
  • BRAYAN PAIVA CAVALCANTE
  • Reproductive biology, pollination and reproductive barriers in two Bromeliaceae of the Atlantic Forest in Rio Grande do Norte

  • Líder : LEONARDO DE MELO VERSIEUX
  • MIEMBROS DE LA BANCA :
  • LEONARDO DE MELO VERSIEUX
  • CHRISTIANO PERES COELHO
  • GLORIA MATALLANA TOBÓN
  • Data: 22-feb-2018


  • Resumen Espectáculo
  • Bromeliaceae is a group of neotropical monocotyledons with 3543 species in 73 genera. Recognized as one of the most notorious cases of adaptive radiation, it has a large variety of reproductive traits. However, several correlated bromeliads occur in sympatry, and to allow this, there must be strong reproductive barriers that keep these species cohesive. This dissertation aimed to describe the reproductive biology of two sympatric bromeliads in the Atlantic Forest of Rio Grande do Norte, in order to understand how reproductive dynamics occurs and the mechanisms that allow the cohesion of both, by analyzing the pollen flow and reproductive barriers. This work was carried out in the Nísia Floresta National Forest, a fragment of Atlantic Forest in the state of Rio Grande do Norte, and the species sampled were Wittmackia patentissima and Hohenbergia ridleyi. In Chapter I, the processes involving reproductive biology, pollination ecology and floral phenology of Wittmackia patentissima and Hohenbergia ridleyi, were analyzed, trying to describe their respective reproductive mechanisms, as well as possible pre-pollination barriers and the pollen flow between them. We found that both have delicate, aromatized, diurnal, flowers that are available for 1-2 days. In addition, flowering is synchronous, occurring between August and October, with several individuals overlapping and prolonging the reproductive season. The main floral visitors are bees, but other hymenoptera, lepidoptera, coleoptera and diptera can be seen, all of which use floral nectar as a resource. Basically, all the floral characteristics are shared, not being identified any type of reproductive barrier of the type pre-pollination between them. In Chapter II, the reproductive systems of this pair of species were described, in order to understand how the dynamics of pollination occurs and what mechanisms enable fruiting. In addition, hybridization tests were performed between these species, analyzing the growth of the pollen tube along the gynoecium, to observe if there are post-pollination barriers that prevent the formation of natural hybrids. As a result, it has been found that both taxa are highly self-compatible, and that there is spontaneous pollen deposition while in flower bud stage, and this can maximize their reproductive success. In the hybridization tests it was possible to observe that the pollen grains germinated and grew until the first portion of the style in all treatments in both species. There was no difference in pollen development in the self- versus cross pollination treatments for either species, however, it was possible to observe abnormalities from the second portion of the style in the hybridization tests. At this point, it was possible to observe the irregular deposition of callose along the style, as well as the stoppage of the pollen tubes in all the hybridization tests, indicating that there are strong post-pollination barriers that inhibit the formation of natural hybrids.

3
  • NIELSON FELIX CAETANO FRANÇA
  • Morphological and morphometric relationships of the pink shrimps genus Farfantepenaeus Burukovsky, 1997 (Crustácea, Decapoda, Penaeidae) in the coast of Rio Grande do Norte State, Brazil

  • Líder : FULVIO AURELIO DE MORAIS FREIRE
  • MIEMBROS DE LA BANCA :
  • FULVIO AURELIO DE MORAIS FREIRE
  • JULIANA DEO DIAS
  • VIRGINIA MARIA CAVALARI HENRIQUES
  • TIEGO LUIZ DE ARAÚJO COSTA
  • Data: 06-mar-2018


  • Resumen Espectáculo
  • The genus Farfantepenaeus is one of the most exploited fisheries resources in the world. The genus is composed by nine species, including the recently described F. isabelae, presented as a cryptic species with F. subtilis. There are evidences of the occurrence of both species in the coast of Rio Grande do Norte State, Brazil, where they would coexist sympatrically with F. brasiliensis. The great similarity between the species of the genus, the lack of identification keys that contemplate the juvenile stage, and the need for new approaches to search for new characters to better distinguish them, are remarkable. Thus, this study proposes the characterization of the secondary sexual characters through ontogeny and the evaluation of allometry of these characters in relation to of the cephalothorax for F. subtilis and F. brasiliensis. A quantitative evaluation of adrostral groove; a morphological analysis, including scanning electron microscopy, in the search for new characters to a better identification and differentiation between F. subtilis, F. brasiliensis and F. isabelae. The samples were collected on the north and east coast of the state. Identification of the specimens was confirmed by molecular analysis. A specific quantitative pattern was defined for the groove of each of the three species. New and effective diagnostic characters were defined to distinguish them, from the juvenile stage, for both sexes in for F. subtilis and F. brasiliensis, with highlighting to the found differences between F. subtilis and F. isabelae; positive allometry was reported for Carapace Length vs Petasma Length ratios (males), Carapace Length vs Height of side plates and Carapace Length vs Width of side plates (females). The results presented, serve as basis to future studies of systematics, evolution and ecology, among species of the genus.

4
  • ALEXANDRO DE ANDRADE DE LIMA
  • GASTEROID FUNGI (BASIDIOMYCOTA) IN THE PIQUIRI-UNA ENVIRONMENTAL PRESERVATION AREA AND IN THE MATA DA PIPA STATE PARK, RIO GRANDE DO NORTE, BRAZIL

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • PAULO SERGIO MARINHO LUCIO
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 08-mar-2018


  • Resumen Espectáculo
  • The gasteroid fungi comprise a group of organisms with great morphological diversity, represented by several distinct lineages of basidiomycetes which, although not sharing the same ancestors, have common characteristics such as the angiocarpic development of the basidiomata and the passive basidiospores dispersion. Besides having influence on the ecology of the most varied ecosystems, its importance has also been demonstrated in several areas such as biotechnology, medicine, forestry and gastronomy. The Atlantic rainforest fragments, the focus of this research, harbor important richness and diversity of gasteroid fungi. However, these sites are increasingly present in anthropic action and are at risk of destruction. During the last years, the efforts of the brazilian mycologists have contributed to the expansion of the knowledge about gasteroid fungi in the country mainly through the discovery of new species. The Rio Grande do Norte state has areas of extreme biological importance with great species richness, but the studies already carried out are concentrated in a few areas. Thus, this study aimed to determine the diversity of gasteroid fungi in two still unexplored remains of Atlantic rainforest in the state of Rio Grande do Norte and, thereby, to fill gaps in taxonomic knowledge about the richness of species of these organisms in that region. For that, fourteen field trips were carried out from May to September 2016 and March to July 2017. The herborization and analysis of the specimens followed the methodology traditionally adopted in studies of gasteroid fungi. The identification of the specimens was carried out based on the specialized literature. Additionally, scanning electron microscopy (SEM) of potentially new or critical species was realized. Twenty species were identified, distributed in 7 genera [Abrachium (1 sp.), Clathrus (1 sp.), Cyathus (3 spp.), Geastrum (12 spp.), Phallus (1 sp.), Scleroderma (1 sp.), and Tulostoma (1 sp.)]. Of these, four are new species to science, 5 constitute new records for Brazil and 7 for Rio Grande do Norte. With these results, there was an increase of about 14.6% in the list of gasteroid fungi for the state of the Rio Grande do Norte, 4.1% for the Northeast, 1.5% for Brazil and 2.2% for the Atlantic rainforest. The Piquiri-Una Environmental Protection Area and Mata da Pipa State Park, were shown to be favorable for the development of gasteroid fungi, including the discovery of new species. Therefore, inventories in areas of the Atlantic rainforest are still extremely essential and urgent mainly in unexplored areas.

5
  • ANA CAROLINA CARVALHO XAVIER
  • Molecular diversity of the freshwater prawns of the group Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palemonidae) in hydrographic ecoregions of northeastern Brazil

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • FRANÇOISE DANTAS DE LIMA
  • RODRIGO AUGUSTO TORRES
  • Data: 05-jul-2018


  • Resumen Espectáculo
  • Macrobrachium amazonicum (Heller, 1862) is a species of freshwater prawns with wide geographical distribution in the Neotropical region and of great socioeconomic importance in Brazil. The species is found in several cisandian hydrographic ecoregions, occurring from large hydrographic basins, such as the Amazon and Paraná-Paraguay rivers, to smaller coastal basins in different phytophysiognomic domains. However, part of this occurrence may be due to anthropic introductions. Because it is a freshwater species, it is expected that the dispersion will be limited and that it will present population structuring related to the hydrographic ecoregions. But occurrence in estuarine areas may allow connection between adjacent watersheds. Despite this, few studies on the systematics and geographic distribution of this species were carried out in the Brazilian northeast, where the species was supposedly introduced. The present study aims to investigate the molecular diversity of the shrimp strains of the M. amazonicum group of the ecoregions of the Brazilian northeast (Maranhão-Piauí, Northeast Middle East and São Francisco), in order to determine if the genetic structure of the species is related to hydrographic ecoregions, and to verify possible areas of introduction of the species. Mitochondrial DNA sequences of the cytochrome oxidase subunit I gene (COI) and phylogenetic and phylogeographic analyzes were used. The molecular data showed the existence of three clades - Amazonas, Coastal and Paraná/Paraguay. Northeastern Brazilian specimens belong to the coastal clade and present low haplotypic diversity in the ecoregion of the Northeast of the Middle East, as well as haplotypes similar to those in the Amazon Estuary ecoregion, and distinct from the adjacent ecoregion (Maranhão-Piauí), corroborating the hypothesis that the populations of this region, as well as the ecoregion of the Upper Paraná, also with low haplotype diversity, are in fact derived from anthropogenic introductions. This information on the evolution and geographic distribution of the M. amazonicum group in Brazil can help in the management and conservation, when recognizing a distinct lineage, as occurred with the description of M. pantanalense Santos, Hayd & Anger, 2013, the results of the delimitations of lineages and distance values p indicate a possible new species within this group, as well as it is possible to recognize areas of anthropic introduction.

Tesis
1
  • LEANDRO COSTA SILVESTRE
  • Ferns e Lycophytes: Floristic and Biogeographical Aspects in Atlantic Forest in Northeast Brazil

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • LEONARDO DE MELO VERSIEUX
  • AUGUSTO CESAR PESSOA SANTIAGO
  • CLEBER IBRAIM SALIMON
  • JEFFERSON GUEDES DE CARVALHO SOBRINHO
  • Data: 26-feb-2018


  • Resumen Espectáculo
  • The fern and the licophytes shall comprise a group of vascular plants without seeds that presents water dependence for its reproduction. In the world, it is estimated 13.600 species, with at least 1.253 in Brazil, divided between 1.111 ferns and 142 licophytes. Brazil with Mexico and the Andes are three primary regions for the biodiversity of fern in America. One of the biggest wealth of species occur in Atlantic Forest (883 spp.), one of the 25 hotspots for the conservation of global biodiversity. The history of Atlantic Forest is related to the climate variations of glacial cycles, with expansions during the moister periods and retraction in drier. This variation in its extension influenced in the species exchange with the Atlantic and Amazon Forest, so that this relation continue being studied by different methodologies. Considering the current knowledge of wealth of fern found in Northerly Atlantic Forest of Brazil. This paper aims to presents the area wealth with knowledge deficit and indicated to conservation, develop model of potential paleodistribution, looking for evidence historical connections between Tropical and subtropical moist broadleaf forests of South America by the Pteridaceae Family and the compatibility of forest refugium with biological wealth areas. The inventoried areas present specimens predominance of Pteridaceae, Thelypteridaceae and Polypodiacae families. Although the species number was reduced, mainly in the conservation units with more influence in anthropic activities and less climate stability. In this case, it were also found species typical Caatinga area, as Doryopterys concolor, Adiantum deflectens, Anemia dentata, A. villosa and disturbed or regenerating area (Macrothelypteris torresiana and Christella dentata). The obtained models for the main biomes detected alteration in the vegetation cover of South America during the Last Glacial Maximum and the Mid Holocene. Even with the retraction events and the expansion of various biomes, always occurred remaining areas that could operate like connection between the Amazon and Atlantic Forest. The retraction during the Last Glacial Maximum, in the Amazon Forest, did not reduce these areas in isolated fragments. However, the observed retraction in the Atlantic Forest was broader, generating isolated nucleus in the forest along the Brazilian coast. The spatial homologies found in this paper, throughout the generalized track, corroborate to the main routes for the species exchange between the Atlantic and Amazon Forest, occurring along the southeast via, in the sub-basin of Paraná River; In the northeast, along the enclaves, and in gallery forest of Brazilian central Savanna. The obtained values about niche overlap, evidence the adequacy conformity of habitat to milder conditions in the past corridors identified by the generalized tracks.

2
  • RUY ANDERSON ARAÚJO DE LIMA
  • Arbuscular mycorrhizal fungi in coastal areas of Rio Grande do Norte state, Brazil.

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • CARLA REJANE SOUSA DE LIRA
  • FELIPE WARTCHOW
  • MARCELO ALOISIO SULZBACHER
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 26-mar-2018


  • Resumen Espectáculo
  • Two studies about environmental factors influencing on arbuscular mycorrhizal fungi (AMF) distribuition were conducted in two coastal areas of Rio Grande do Norte state between 2013 and 2015. Biological material collections occurred during rainy and dry periods. The first study was carried out in an Atlantic Forest area, in two distinct phytophysiognomies, where it was evaluated whether the local AMF community responded to soil component’s variation under the hypothesis that nutritional deficiency could favor AMF diversity and is directly associated with the distribution pattern of these organisms. Divergent than expected, the AMF of the locality was not significantly influenced by the observed edaphic variables, showing signs of its distribution being positively related to the plant diversity of the locality where they are inserted. In this study was found the first record of Septoglomus furcatum for Atlantic Forest areas. The second study was carried out in a coastal dune region with a Caatinga vegetation, in which the distribution of AMF was observed in floodable and non-floodable areas due to hypersaline fluvial influence. In this study, it was observed that the fluvial waters act as an environmental filter influencing the AMF species distribution. For species registered in the second study, three represent new records for science (Scutellospora sp. and Rhizoglomus sp.), one species is considered rare (Acaulospora spinosissima) and two have old original description (Glomus nanolumem and Rhizoglomus microaggregatum). In the studie’s course, some spores were described as "sp" due to the low amount of glomerospores obtained by wet sieving and centrifugation in water and sucrose, leading to the search for an improvement of these methods or proposing of AMF soil extraction processes, suggesting the methodology here called "wet shaking", which proved be more efficient in relation to aforementioned methodologies.

3
  • MARIANA CAVALCANTE E ALMEIDA SÁ
  • Russulaceae Lotsy from Brazil

  • Líder : FELIPE WARTCHOW
  • MIEMBROS DE LA BANCA :
  • FELIPE WARTCHOW
  • BIANCA DENISE BARBOSA DA SILVA
  • CARLA REJANE SOUSA DE LIRA
  • GEORGEA SANTOS NOGUEIRA DE MELO
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 29-jun-2018


  • Resumen Espectáculo
  • Brazil is a country with a big biodiversity and has a 20% of all biodiversity of the world. Therefore the knowledge of the brasilian mycobiota e scarce and it’s worse in the semiarid region. The present study intended to investigate the species of fungi of the Russulaceae from Brazil through taxonomic studies. The collections were made during the rainy season in areas of conservation of some North and Northeastern states. The species were discribed, ilustraded macro- and microscopically, microstructures of taxonomic aspects and spores ornamentations, these were also observed in scanning electron microscopy. As result were described 22 species. The most representative were Russula with 15 species, Lactifluus with 7 species, the genus Multifurca and Lactarius didn´t present anu representants.

4
  • WALLACE MESSIAS BARBOSA SÃO MATEUS
  • Molecular phylogeny and time of divergence in Harpalyce (Leguminosae, Papilionoideae) and taxonomic reassessment of sect. Brasilianae

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • FERNANDA ANTUNES CARVALHO
  • LEONARDO DE MELO VERSIEUX
  • CRISTIANE SNAK
  • DOMINGOS BENÍCIO OLIVEIRA SILVA CARDOSO
  • HAROLDO CAVALCANTE DE LIMA
  • Data: 30-jul-2018


  • Resumen Espectáculo
  • Harpalyce is one of the most representative genus of the tribe Brongniartieae (Leguminosae, Papilionoideae) and includes about 35 species. The genus is characterized by shrub or arboreal habit, peltate multicellular glandular trichomes, leaves imparipinnate, bilabiate calyx (vexillar and carinal lips), dehiscent legume ans seeds strophiolate. In the last taxonomic revision the genus was subdivided into three sections: Brasilianae, Cubenses and Harpalyce. Although several works of phylogeny confirmed the monophyletic of the genus, no representative sampling of all the morphological diversity of the taxa was obtained. The objective of this study was to evaluate the monophyly of Harpalyce, its infrageneric classification, to infer the time of divergence and to reconstruct the evolution of the ancestral characters. In the present study, Harpalyce phylogenetic reconstructions were performed from nuclear ribosomal DNA (ITS/5.8S + ETS) and chloroplast (matK/trnK + trnL intron) sequences, involving a wide sampling of species belonging to all sections and other genera of the tribe Brongniartieae. The results of the phylogenetic reconstructions demonstrated the monophyletic of Harpalyce and the three sections. Molecular dating revealed that Harpalyce diverged from other genera of the tribe Brongniartieae in the Oligocene 30.6 Ma and diversified 21 Ma. In addition, the taxonomic revision of the sect. Brasilianae that includes a key of identification, data on geographical distribution, taxonomic notes and state of conservation of all the species; and the other study was the description of two new species.

5
  • AMANDA BARRETO XAVIER LEITE
  • AN REVIEW OF THE FAMILY GOMPHILLACEAE (LICHENIZED ASCOMYCOTA): PHYLOGENY, SYSTEMATIC AND EVOLUTION

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • RAQUEL CORDEIRO THEODORO
  • EUGÊNIA CRISTINA GONÇALVES PEREIRA
  • JOSÉ LUIZ BEZERRA
  • MANUELA DAL FORNO
  • Data: 31-ago-2018


  • Resumen Espectáculo
  • Gomphillaceae is considered one of the most diverse families of foliicolous lichens. The knowledge about the taxonomic diversity of the ascomata and hyphofores (unique asexual structures of this family) within a phylogenetic context is of great importance to understand the systematics and evolution of this group. However, phylogenetic studies concerning Gomphillaceae are still scarce, with no extensive knowledge of the internal classification and position of the family. The objective of the present research is to review the family Gomphillaceae (Ascomycota lichenized), especially the foliicolous taxa, using morphological and molecular characters. The methodology consisted of using samples collected in areas of Atlantic Forest, Brejo de Altitude and Amazon, in Brazil, in addition to samples collected in other Latin American countries such as Cuba, Mexico, Panama, Costa Rica and Guatemala. The collected material was pressed, refrigerated, analyzed and selected according to the presence of representatives of the family Gomphillaceae. After that, the samples were identified, morphologically reviewed and molecularly analyzed using the mtSSU rDNA and nuLSU rDNA markers. A total of 2,127 leaves containing foliicolous lichens was collected and 502 specimens were selected for identification and molecular analysis. However, due to contamination or PCR failure, 309 specimens were used in the final phylogenetic analysis for the family, added to 28 sequences from GenBank (including the outgroup). A total of 464 sequences were obtained for the Gomphillaceae family, 272 new for nuLSU and 136 new for mtSSU. The results obtained from this work help to explain the distribution of genera and species belonging to Gomphillaceae, contributing to the systematic evolutionary knowledge within the group. 13 new genera for the family (Adelphomyces Xavier-Leite, M. Cáceres & Lücking, gen. nov., Aptrootidea Xavier-Leite, M. Cáceres & Lücking, gen. nov., Aulaxinella Xavier-Leite, M. Cáceres & Lücking, gen. nov., Batistomyces Xavier-Leite, M. Cáceres & Lücking, gen. nov., Bezerroplaca Xavier-Leite, M. Cáceres & Lücking, gen. nov., Caleniella Xavier-Leite, M. Cáceres & Lücking, gen. nov., Monocalenia Xavier-Leite, M. Cáceres & Lücking, gen. nov., Pseudocalenia Xavier-Leite, M. Cáceres & Lücking, gen. nov., Roselviria Xavier-Leite, M. Cáceres & Lücking, gen. nov., Serusiauxiella Xavier-Leite, M. Cáceres & Lücking, gen. nov., Sipmanidea Xavier-Leite, M. Cáceres & Lücking, gen. nov., Verruciplaca Xavier-Leite, M. Cáceres & Lücking, gen. nov., and Vezdamyces Xavier-Leite, M. Cáceres & Lücking, gen. nov..), four newly reinstated genera (Microxyphiomyces Bat., Valle & Peres, Psathyromyces Bat. & Peres, Spinomyces Bat. & Peres ex Xavier-Leite, M. Cáceres & Lücking, gen. nov., and Sporocybomyces H. Maia), and 53 new combinations are introduced for species included in the new and re-established genera. In addition, the analyzes confirmed polyphyletic groups (Aderkomyces, Calenia, Echinoplaca, and Tricharia), and the previously distinguished and well supported genera were Actinoplaca, Arthotheliopsis, Asterothyrium, Aulaxina s.str, Bullatina, Caleniopsis, Gomphillus, Gyalectidium, Gyalidea,
    Jamesiella, Linhartia, Psorotheciopsis, Rolueckia, and Rubrotricha. Finally, some small genera have not yet been molecularly sampled and require further analysis: Aplanocalenia, Diploschistella, Ferraroa, Gyalideopsis, Hippocrepidea, Lithogyalideopsis, Paratricharia, Phyllogyalidea.

6
  • THIAGO ACCIOLY DE SOUZA
  • PHYLOGENY AND BIOGEOGRAPHY OF NEOTROPICAL GEASTRUM SPP. (BASIDIOMYCOTA): SECT. MYCELIOSTROMA, SUBSECT. EPIGAEA

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • PAULO SERGIO MARINHO LUCIO
  • TIARA SOUSA CABRAL
  • BIANCA DENISE BARBOSA DA SILVA
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • Data: 31-ago-2018


  • Resumen Espectáculo
  • Knowledge about Neotropical gasteroid fungi has increased nowadays, although new species from this region are constantly described. However, there is no biogeographic or evolutionary studies about these fungi. It is consensual that Neotropical mophoclimatic domains have been contiguous in the past. The genus Geastrum is the better sampled and represented gasteroid fungi in Neotropical morphoclimatic domains, reason why it was chosen as a model for testing the influence of the Neotropical biogeographical evolution over fungal diversification. Diversity within subsect. Epigaea was assessed through morphological and molecular analysis (ITS and LSU nrDNA). Divergence times between clades where estimated through fossil calibration of molecular clock in a concatenated
    dataset. Here, six new species are proposed, and two previously synonymized species are validated. The ancestral biogeographic reconstruction, the haplotypic distribution through S-DIVA algorithm from one of the new species, along with the divergence times, corroborate the hypothesis that environmental changes that resulted in current Neotropical morphoclimatic domains have influenced irradiation of Neotropical Geastrum species in subsect. Epigaea.

2017
Disertaciones
1
  • SÁVIO ARCANJO SANTOS NASCIMENTO DE MORAES
  • PHENOTYPIC AND GENOTYPIC VARIABILITY OF SHRIMP Macrobrachium jelskii (MIERS, 1877) FROM THE BRAZILIAN NORTHEAST BASINS: AN APPROACH OF INTEGRATION SYSTEMS

  • Líder : FULVIO AURELIO DE MORAIS FREIRE
  • MIEMBROS DE LA BANCA :
  • FULVIO AURELIO DE MORAIS FREIRE
  • LUCIANA SEGURA DE ANDRADE
  • RENATA AKEMI SHINOZAKI MENDES
  • Data: 21-feb-2017


  • Resumen Espectáculo
  • Macrobrachium jelskii is a widely distributed species in northeastern Brazil, occurring throughout South America. However, no studies on phylogeography, local morphological variations and genetic variability of the populations of this species were carried out. This prawn species can reveal important information on the dispersion pattern and related vicariates for scenarios of past tectonic arrangements and other events that have influenced the biogeography of the aquatic taxa. The aim of this manuscript is to investigate a phenotypic and molecular diversity of the prawn M. jelskii populations in the Mid-Northeast Caatinga, Maranho Piauí and São Francisco ecoregions, influenced by past scenarios and environmental local responses. This scientific article uses an approach of Integrative Systematics, a multivariate geometric morphometry, phylogenetic analyzes and genetic structuring. Geometric morphometry showed evident sexual dimorphism, in which females presented cephalothorax and abdomen more horizontally stretched. This possibly favors gonadal development, vitellogenesis and egg storage. Abstraction of the shape of the three body planes does not demonstrate a consensus on the structuring of the populations between M. jelskii in the Northeast of Brazil. This fact corroborates a low nucleotide and haplotype diversity, in which only one haplotype was shared among the populations of the basins. Thus, ratifying a possibility of introduction in the Northeast area by DNOCS. In addition, the genetic data reported a presence of noises and double peaks not electropherogram, which represents co-amplification of mitochondrial pseudogenes of the region Cytochrome Oxidase I, little reported in the literature for the genus Macrobrachium. This fact show a precedent of mistrust for published phylogenetic and phylogeographic relationships, which recently did not depict this. Knowing that this characteristic can generate an overestimation of evolutionary lineages and, thus, erroneous conclusions on dispersive, vicarious or speciation events, it is of importance to report the cases of pseudogenes and the use of specific molecular primers for each taxon.

2
  • ALEX BARBOSA DE MORAES
  • Morphological and morphometric relationships among Litopenaeus vannamei (Boone, 1931) and Litopenaeus schmitti (Burkenroad, 1936) (Crustacea, Decapoda, Penaeidae) and its implications on bioinvasion, on the eastern coast of northeastern Brazil

  • Líder : FULVIO AURELIO DE MORAIS FREIRE
  • MIEMBROS DE LA BANCA :
  • FULVIO AURELIO DE MORAIS FREIRE
  • LUCIANA SEGURA DE ANDRADE
  • RENATA AKEMI SHINOZAKI MENDES
  • Data: 23-feb-2017


  • Resumen Espectáculo
  • The state of Rio Grande do Norte concentrates great fishing activity as well as farmed shrimp production. The introduction of alien species for cultivation may allow the invasion of these species in natural aquatic environments and promote loss of native biodiversity. Species with high morphological similarity may be functionally similar, increasing the susceptibility of natural populations to the impacts promoted by the invasion of non-native species. This thesis proposes to compare morphologically and morphometrically exotic Litopenaeus vannamei with Brazilian native species, L. schmitti, by external morphology of secondary sexual characteristics and variation of carapace shape. The morphological evaluation showed that the secondary sexual character has differences between ontogenetic stages intra and interspecifically in both males and females. In addition, the study on the growth of petasma in relation of cephalothorax length showed that these structures present distinct growth relationships between species and between ontogenetic groups. There is also a marked difference in the size of the first maturation between the two species but not between the L. vannamei groups of nature and farmed. In the evaluation of the shape of the cephalotorax, a morphological distinction between the species was evident, showing a significant geometric variation between the cephalotorax of the native and nonnative species, but in an intraspecific approach it was not possibile to distinguish the L. vannamei specimens cultured from those acclimated to the natural environment.

3
  • KÁSSIA JÉSSICA GALDINO DA SILVA SCHINAIDER
  • ARBUSCULAR MYCORRHIZAL FUNGI IN A RESTINGA AND CAATINGA CONTINUUM IN THE PONTA DO TUBARÃO SUSTAINABLE DEVELOPMENT RESERVE, RN

  • Líder : RAQUEL CORDEIRO THEODORO
  • MIEMBROS DE LA BANCA :
  • RAQUEL CORDEIRO THEODORO
  • IURI GOULART BASEIA
  • DANIELLE KARLA ALVES DA SILVA
  • Data: 06-mar-2017


  • Resumen Espectáculo
  • The coastal zone is characterized by a transition between biomes or phytophysiognomies and may present stressful environmental conditions. In Rio Grande do Norte State (Brazil), this transition occurs due to the overlap (ecotone) between restinga and caatinga, distinct phytophysiognomies, characterized by mosaic formations. In addition to the flora adaptations to this interface, another important factor for the survival of plant species is the arbuscular mycorrhizal fungi (AMF), which are important symbionts that are relevant for the stabilization of the soil-plant system. In view of its ecological importance, this work aimed to identify the diversity of the AMF community in a restinga and caatinga continuum along the Northeastern coast, in the Ponta do Tubarão Sustainable Development Reserve, in Macau / Guamaré Counties, RN, Brazil. Two soil collection were carried out, one at the end of the period after rainfall and another in the dry period for AMF species identification by spore morphology. The soil abiotic factors and their influence on the AMF community were assessed. Twenty - four species were identified, 12 of which are exclusive to restinga, one (1) to caatinga and 11 occurred in both areas. As for the seasonal dynamics, the dry period showed a greater abundance of spores, and in the rainy season sporocarpic species, with agglomerates forming bunches of spores, were frequently found. The environmental factors that most influenced the distribution of the species were salinity and pH. The salinity, as well as the other chemical aspects of the soil verified, was homogeneous, being found some specific sites more saline, which presented a low species richness. This result suggests a significant impact of one of the main economic activities of the RN, the salines, on the biodiversity of AMF in the soil.

4
  • ARTHUR DE SOUZA SOARES
  • LAMIACEAE IN RIO GRANDE DO NORTE: TAXONOMY AND CONSERVATION STATUS

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • LEONARDO DE MELO VERSIEUX
  • MARIA TERESA AURELIANO BURIL VITAL
  • Data: 07-mar-2017


  • Resumen Espectáculo
  • Lamiaceae, 236 genera and about 7,200 species distributed in seven subfamilies, has cosmopolitan distribution, with most of its species occurring in the tropical region of the planet. For Brazil, 524 species are listed in 46 genera, of which six genera and 343 species are endemic. In the state of Rio Grande do Norte (RN), they are cataloged of genera and 13 species, where only one genus and four species are endemic to Brazil. This dissertation is divided into two chapters, which are presented here as independent manuscripts already in the standards required for journals chosen for publication, whose norms are attached to this dissertation. The chapters are: Lamiaceae in Rio Grande do Norte, Brazil, where is the taxonomic and floristic treatment of the Lamiaceae family in the state of Rio Grande do Norte. In this study, 30 species were recorded, of which 14 are exotic, cultivated or cultivated, and 16 are native species. The species Hyptis brevipes Poit. e Vitex rufescens A.Juss. occur only in the Atlantic Forest domain, while Amasonia campestris (Aubl.) Moldenke, Eriope macrostachya Mart. Harley & J. F.B.Pastore, Mesosphaerum pectinatum (L.) Kuntze, Hyptis lantanifolia Poir., Mesosphaerum sp., Vitex gardneriana Schauer, Vitex schaueriana Moldenke, occur only in the Caatinga domain. The species Mesosphaerum suaveolens (L.) Kuntze and Marsypianthes chamaedrys (Vahl.) Kuntze were the ones that presented the largest distribution in the territory of the state. In the second chapter, New records, conservation assessments and distribution of Lamiaceae in Rio Grande do Norte, northeastern, Brazil, is presented the Status of conservation of the species of Lamiaceae and their distribution in the RN including the species and genera mentioned for the first time for the state. Among the native species, three were classified as 'Threatened', four as 'Vulnerable', three are 'Least Concern', two are 'Near Threatened' and four are 'Data Deficient'. The phytogeographical domain Caatinga, a Seasonally Dry Tropical Forest (SDTF), has the highest number of Lamiaceae species, although less than 1% of this region is protected by conservation units. This study reveals the worrying state of conservation of the Lamiaceae family in the NR and the need for conservation actions such as the creation of new conservation units to preserve the quality of the habitat and the remaining natural formations and to monitor populations in the wild.

5
  • RONEY EMANUEL COSTA DE PAIVA
  • Freshwater fishes from coastal basins of the Atlantic Forest domain in the Mid-Northeastern Caatinga hydrographic ecoregion

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • EDUARDO MARTINS VENTICINQUE
  • RICARDO DE SOUZA ROSA
  • Data: 17-ago-2017


  • Resumen Espectáculo
  • One of the most threatened woodlands in the world is the Atlantic Forest, which is classified as a biodiversity hotspot since it presents high levels of species richness and endemism. However, our knowledge level is variable with regards to taxonomic groups and geographic regions. Fishes freshwater status of the art has pointed that ichthyofaunal inventories should be immediately managed in Northeastern Brazilian Atlantic Forest basins due to impacts of human actions. Ichthyofaunal knowledge of the Mid-Northeastern Caatinga ecoregion (MNCE), which encompasses the basins between Parnaíba and São Francisco rivers, is considered to be partial with only a few studies concerning fishes, in the areas under influence of the Atlantic Forest. This ecoregion is chiefly under the effects of Caatinga, but the drainages that flow into the east coast are partially or completely inserted in the Atlantic Forest domain. Therefore, the aim of this research is to define the richness of freshwater fish species of the basins that drain the MNCE. Within these drainages there were recorded 57 species of freshwater fishes in 43 genera, 19 families, and six orders; 10 native species were recorded only in Atlantic Forest domains, and five within Caatinga limits. The remaining (n=43) are shared between both biomes. There are also listed species that are endemic to the ecoregion (n=9), threatened (n=1), and non-native (n=9). Paraíba do Norte river basin, the largest among the studied ones, showed the highest species number. This inquiry also presents a list of protected species in conservation units in MNCE. The study also shows patterns in the composition of species in the different drainages, be they microbasins, small and medium basins, also indicating sample gaps in these. The results raise the continental fish species richness to 39 in the Atlantic Forest, which encompassed mainly the ichthyofauna southern to São Francisco river.

6
  • EDWESLLEY OTAVIANO DE MOURA
  • FLORISTIC AND ENVIRONMENTAL RELATIONS ON THE SEMI-ARID COAST OF RIO GRANDE DO NORTE, BRAZIL

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • AUGUSTO FRANCENER NOGUEIRA GONZAGA
  • LEANDRO DE OLIVEIRA FURTADO DE SOUSA
  • Data: 31-ago-2017


  • Resumen Espectáculo
  • Brazil has the largest forest remnants on the planet, a great complexity of environments and high diversity of species. All this biodiversity is threatened mainly by human intervention in natural areas and more intensely in the coastal zone, where the largest urban areas are located. In this context, the Caatinga and Atlantic Forest are some of the most threatened domains in Brazil. This study aimed to answer the following questions: 1) what the floristic composition along a stretch of coastal vegetation in semi-arid enviroment? 2) is there variation in this composition? 3) what are the determinant factors? 4) in which domains species have the most affinity? To do this, 120 sampling units (UAs) of 10 × 10 m were unsystematically allocated in six blocks of 1 × 5 km in the coastal region of Rio Grande do Norte. In all UAs the occurrence of species in any form of growth was noted. The floristics data were crossed with climatic variables and analyzed through RStudio and Microsoft Excel software. A total of 148 species were recorded and Fabaceae, Rubiaceae, Poaceae and Euphorbiaceae were the richest families. Exotic species also had a relevant participation in the communities, mainly in block 6, where they dominated. Variable mean elevations (MTC) minimum precipitation (Pmin), dry months (MS) and very dry months (Tmed) had a significant relationship with the sample blocks. suggesting that the supply of water through rainfall, more than other factors, is what most influences the distribution of species along the coast. The region from the center to the west of the state is more related to each other and the region at the eastern end forms a distinct group from the other regions of the state. The species richness was decreasing in the east-west direction, which, together with the highest precipitation rates, reflects the relation of the easternmost regions to the Atlantic Forest domain. When it enters the interior the composition will depend on the adjacent phytogeographic domain. The coastal formations formed from the central portion to the western end of the state have a greater relationship with the Caatinga domain.

7
  • MIGUEL FERNANDES BEZERRA NETO
  • ICHTHYOFAUNA OF THE PARQUE NACIONAL DAS NASCENTES DO RIO PARNAÍBA AND SURROUNDINGS - CERRADO (NORTH AND NORTHEAST, BRAZIL)

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • TELTON PEDRO ANSELMO RAMOS
  • JÔNNATA FERNANDES DE OLIVEIRA
  • MÁRCIO JOAQUIM DA SILVA
  • Data: 31-ago-2017


  • Resumen Espectáculo
  • The freshwater ecosystems and their fauna are the world's most threatened by anthropic activities. Because of that, it has been rapidly declining. Due to concern about the unplanned urban occupation and irrational use of natural resources, the headwaters of the Parnaíba River and tributaries of the Tocantins River is protected, since 2002, by the creation of the Parque Nacional das Nascentes do Rio Parnaíba (PNNRP). The PNNRP is inside the Cerrado biome, in a transitional area between the Amazon and the Caatinga. Besides it’s located in the border of the States of Maranhão, Piauí, Tocantins and Bahia (MAPITOBA). This area is a watershed of three important hydrographic basins: San Francisco, Tocantins and Parnaíba. Thus, this work was developed to study the ichthyofauna of the PNNRP identifying the species and richness in each basin. In addition to indicating endemic species, endangered, shared, not described and possible introduced species. The field sampling covered 53 collection point in July’s 2014 using active (picaré-type nets, hand-nets and trawl nets) and passive (holding nets and covo traps) in order to avoid selectivity for each fishing gear. In PNNRP and around, was recorded 97 species, 53 genres, 22 families and 6 orders of freshwater fish. These species were recorded in areas of three basins’s headwater: Parnaíba, Tocantins and São Francisco. Among them, only two (4.76%) are shared between the two basins: Bryconops melanurus (Bloch, 1794) and Moenkhausia sanctaefilomenae (Steindachner, 1907). Of the remaining, 34 (83.34%) species were present only in the basin of Parnaiba river and four (11.90%) on the Tocantins river basin. Of these 13 (30.95%) are supposedly endemic to the Parnaíba basin. This information can be used for the elaboration of the management plan of the conservation unit, as well as future biogeographic studies of the aquatic biota of the Cerrado. Although the PNNRP area has increased twice since its inception, it still does not include headwaters of the middle San Francisco basin, which would imply in a greater wealth fish protected by conservation unit.

Tesis
1
  • DÔNIS DA SILVA ALFREDO
  • REVIEW OF LYCOPERDON PERS. GENUS (LYCOPERDACEAE, AGARICALES) THROUGH MORPHOLOGICAL AND MOLECULAR ANALYSES

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • BRUNO CAVALCANTE BELLINI
  • RAQUEL CORDEIRO THEODORO
  • LUIZ FERNANDO PASCHOLATI GUSMÃO
  • TIARA SOUSA CABRAL
  • Data: 30-mar-2017


  • Resumen Espectáculo
  • Earth’s biodiversity is estimated to include about 50 million species. For Fungi this estimate is around of 5.1 million species, and to identify them all, it is believed would take the taxonomists about 1000 yrs. The taxonomists have been making the effort to identify these fungal species, including the puffballs genus, Lycoperdon Pers. Traditionally, the taxonomy of Lycoperdon has been based only on morphological characters, and individual taxonomists have adopted their own distinct concepts to separate the species. Through the end of 1980`s many projects based on morphological taxonomy were published to describe the diversity of species of Lycoperdon encompassing almost all continents, to separate cryptic species, and to solve problems of divergence by synonymizing of taxons. In the beginning of the 90`s there was a revolution in the taxonomy of fungi with the introduction of molecular tools in species classification, as well to infer phylogenetic relationships and to identify new taxa. Lycoperdon taxonomy was hit by these new tools in the beginning of the 21th century; with the 2008 Larsson and Jeppson work, some genera, such as Morganella and Vascellum were recognized as being subgenera of Lycoperdon. During this period, identifying species by a molecular bar coding gained acceptance, opening the era of DNA barcoding to identify animals and plants, and for fungi, using the internal transcribed spaced region (ITS) to distinguish among species. The work described here is the first to focuss on extensive DNA barcoding to classify the species in the Lycoperdon genus. The present work aims to review the species of Lycoperdon from South America, based on morphological features and on the use of ITS as barcode. Also, using the large subunit (LSU) of nrDNA, to check wether the South American species, Morganella could be a subgenus of Lycoperdon. For this work, loans were made from nationals and international herbaria; the specialized literature in the taxonomy of Lycoperdon was studied, and renowned experts of Lycoperdon were consulted. Afterward the DNA was extracted from little portions of the inside of basidiomata; next the product extracted was amplified and sequenced. The sequences were edited and submitted to the search by similarity on the GenBank website using the BLAST software to check whether the sequences matched homologous sequences or were contaminants. Sequences were aligned with the aid of free software for download, such as Geneious Pro v4.8.5. After the editing of the sequences, analyses 
    of maximum parsimony and distance (K2P) were carried out with the PAUP software; the distance tree was constructed by Neighbor-Joining. Also, a Bayesian analysis was done using MrBayes software. The generated trees were viewed with FigTree software and edited on InkScap software. Based on ITS as barcoding of Lycoperdon genus, the following results were obtained: 65% of the samples were successfully amplified; 19 species, excluding those under Morganella, were identified from Central and South America; four are first records to South American continent: Lycoperdon calvescens, L. endotephrum, L. ericaeum and L. eximium. Adding the LSU region, Morganella is confirmed as a subgenus of Lycoperdon; L. demoulinii is a new species for science; and a new subgenus, Arenicola, emerged. Based on morphological analyses and DNA barcoding, it was possible to identify 43 species of Lycoperdon genus around the world; 30 species from Central and South America; few species are distributed in both Hemisphere (around 30%). Finally, we concluded that the ITS is promising as DNA barcode of Lycoperdon; however, some groups need to include more specimens and markers. Morphological data are crucial for interpretation of the data generated by molecular methods of taxonomy.

2
  • ALLYSON SANTOS DE SOUZA
  • PROSPECTION OF THE CRYPTIC BIODIVERSITY AND BIOGEOGRAPHIC PATTERNS IN FISHES OF THE COAST AND OCEANIC ISLANDS OF THE WESTERN ATLANTIC

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • SERGIO MAIA QUEIROZ LIMA
  • CARLOS ALFREDO GALINDO BLAHA
  • JOSE GARCIA JUNIOR
  • PAULO AUGUSTO DE LIMA FILHO
  • Data: 30-mar-2017


  • Resumen Espectáculo
  • The extensive Brazilian coast is multi-party in different ecosystems, composed by estuaries, mangroves, reef systems, oceanic and coastal islands. These environments detain a largely diversified ichthyofauna composed by 1,297 species, in which 25% represents endemic species. These levels of biodiversity can be uncertain, because of the occurrence of cryptic and polytypic species and the absence of population studies, especially in reef species. In this sense, population, taxonomical and phylogenetical aspects were analyzed form species of the Pomacentridae (Perciformes) and Carangidae (Carangiformes) families, along the coast and oceanic islands of Brazil. The molecular and morphometric analyzes were performed in S. variabilis, S. fuscus, S. rocasensis, S. sanctipauli and S. fuscus trindadensis indicated synonym among S. rocasensis and S. sanctipauli, and between S. fuscus and S. fuscus trindadensis. Besides that, revealed the presence of a possible cryptic species which has been confused with S. variabilis. The population analyzes in Abudefduf saxatilis at the Western Atlantic, including the oceanic islands, reveals a status of panmixia from Venezuela to the Southeast of Brazil, while the island populations have different levels of genetic structuration, specially the population of the Trindade island. The genetic analyzes in the polytypic species Caranx lugubris indicated a large panmitic population in the Western Atlantic, revealing new data about the origins of the morphotypes that occurs in the surroundings of the Saint Paul Rocks archipelago. The data obtained expands the knowledge over the insular ichthyic fauna of the Atlantic and serves as subsidy to the conservation and management of species of these particular and important oceanic regions.

3
  • PÂMELA LAVOR ROLIM
  • MOLECULAR PHYLOGENY, BIOGEOGRAPHY AND EVOLUTIONARY ASPECTS OF PILOSOCEREUS (CACTACEAE)

  • Líder : ALICE DE MORAES CALVENTE
  • MIEMBROS DE LA BANCA :
  • ALICE DE MORAES CALVENTE
  • FERNANDA ANTUNES CARVALHO
  • DOMINGOS BENÍCIO OLIVEIRA SILVA CARDOSO
  • MARIA CLÁUDIA MELO PACHECO DE MEDEIROS
  • PATRÍCIA SOFFIATTI
  • Data: 31-mar-2017


  • Resumen Espectáculo
  • The genus Pilosocereus belongs to Cactaceae (subfamily Cactoideae) and is one of the largest and most widely distributed genera within the tribe Cereeae. With 42 species divided in two subgenera, Pilosocereus and Gounellea the group is disjunctly distributed in the Neotropics and centered in eastern Brazil, occurring in many different types of habitats associated with xeric environments. Due to its morphological features, providing great adaptability to xeric environments (as all Cacti), Pilosocereus species are often dominant and play an important ecological and ethnobotanical role where they occur. However, there were few studies so far that focused on the genera as a whole. Thus, this thesis aimed to investigate the phylogenetic relationship, biogeography and evolutionary aspects of the genus Pilosocereus. The first Chapter focused in investigating Pilosocereus diversification processes in arid habitats in the Neotropics, using phylogenetic relationships, clades divergence times and reconstruction of ancestral areas. The conclusion was that the genus is not monophyletic and that the main clade (Pilosocereus sensu stricto) diversified very recently (mainly in Late Pleistocene), with origin in the Caatinga and posterior migration events to other xeric environments in North/Central America, Northwest of South America and Caribbe. In Chapter 2, the phylogenetic relationships in the genus were reconstructed through Bayesian and Maximum Parsimony analyses, with expanded taxon sampling and genomic regions in comparison with previously published works. Again, the genus was found as non-monophyletic, as well as four heterotypic species, what led to the proposition of taxonomic changes, including the resurrection of three species, three new synonyms, a new name in the species rank and a new name in the generic rank, Xiquexique (composed of the species formally positioned in P. subg. Gounellea), while Pilosocereus was newly circumscrybed with 42 species and four subspecies. Finally, Chapter 3 presents the distribution patterns, richness, endemism and current conservation scenario for all species of the group. Some taxa are restricted to vegetation types, but most of them are widely distributed in different environmental gradients. The greatest species richness and phylogenetic diversity are found in the states of Bahia and Minas Gerais, with areas of endemism in Eastern Brazil and Mexico. Thus, this thesis had a multidisciplinary approach in order to elucidate different aspects of the biology of this large and diverse group, which remained unknown until now.

4
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • MORPHOLOGICAL AND MOLECULAR REVIEW OF THE GENUS CYATHUS HALLER (NIDULARIACEAE, AGARICALES, BASIDIOMYCOTA)

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • BRUNO TOMIO GOTO
  • RAQUEL CORDEIRO THEODORO
  • BIANCA DENISE BARBOSA DA SILVA
  • FELIPE WARTCHOW
  • Data: 31-mar-2017


  • Resumen Espectáculo
  • The genus Cyathus Haller was established in 1768, but in-depth taxonomic studies with the group only occurred after 1844. In the following years changes in the infrageneric classification of Cyathus were proposed, based mainly on morphology. In 1906 Lloyd distributed the species into five groups, and in 1975 Brodie expanded to seven groups. With the advances of phylogenetic studies, the morphological classifications were tested and a new subdividion into three groups was proposed by Zhao and collaborators in 2007. Based on the morphological characteristics used in the last two classifications, is remarkable the presence of ambiguous and poorly delimited morphological characters, which makes identification at species level often doubtful. Thus, this PhD thesis aimed to understand the phylogenetic relationships of the fungi in the genus Cyathus and how these relations reflect in the taxonomic characterization, through morphological and molecular analyzes covering most of the type species of the group. The specimens analyzed come from national (JPB, URM, UESC and UFRN-Fungos) and international fungal collections (BBH, BPI, PH, DAOM, K, MA-Fungi, PC and TNS). Morphological and molecular analyzes were performed in Brazil and Japan: the morphology followed the standard methodology for the group, and the molecular analysis was performed based on protocols available in the literature or indicated by the reagent manufacturers, with steps adapted for the genus Cyathus, including the design of specific primers. New informational morphological characters were defined from the description of 50 types and 4 other species. All 81 species with name in current use were discussed. Figure plates, list of invalid names and list of synonyms are also presented. The phylogenetic analyzes using Maximum Parsimony and Bayesian included 36 species, 25 of them being classified in some nomenclatural type category. The monophyletism of Cyathus was confirmed with maximum support in both tests, and the infrageneric groups of the last classification based on molecular data were unchanged, however the clade striatum showed segregation into five groups and two subgroups. All the phylogenetic organization is supported based on morphological characters and diagnoses are presented for each clusters as well as a dichotomous key for the infrageneric separation.

5
  • FRANÇOISE DANTAS DE LIMA
  • Molecular genetics and ecology in an integrative approach towards Octopus insularis conservation Leite & Haimovici, 2008 in the Tropical Atlantic

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • ADRIAN ANTONIO GARDA
  • FULVIO AURELIO DE MORAIS FREIRE
  • PAULO CESAR DE PAIVA
  • SERGIO RICARDO FLOETER
  • Data: 07-abr-2017


  • Resumen Espectáculo
  • The integrative approach applied to species conservation is essential to understand the factors that contribute to population diversification, speciation processes and identification of ecological patterns. To propose a panorama for the conservation of Octopus insularis, a wide distributed species in the Tropical Atlantic, an integrative approach involving phylogeny, phylogeography, Barcoding, climatic niche modeling and landscape genetics was adopted. The present study was performed in 15 localities of the Tropical Atlantic west coast and oceanic islands. It was identified a northward increase in the O. insularis distribution area towards the Caribbean Sea, which confirms high potential of this species to dominate warm and shallow waters. Furthermore, misidentification of the species that compose fisheries stocks in the Gulf of Mexico was detected, which may threaten the endemic species O. maya. By using phylogeny approach with biogeographic interference, it was possible to identify Caribbean Sea as an origin area of O. insularis, which diverged from others congeners after the uplift of Isthmus of Panama. Tree clades formed by transisthmian species confirmed the importance of this geological event on speciation processes in octopod. The influence of the historical e future climate changes on distribution and expansion of O. insularis populations was analyzed by ecological niche modeling in five temporal scenarios. The analysis revealed a climatic niche expansion of O. insularis towards temperate regions on global warming scenarios. Whereas, phylogeography and population structure showed four populations/stocks well delimited, mainly due to South Equatorial Current and seamounts. These results corroborate the Isolation by Distance hypothesis. The present results allowed a holistic view, including genetic, ecology and oceanographic factors, which influences O. insularis life history. Those findings can help to build an actual panorama of species conservation and regulation, as well, to suggest future management measures to attenuate possible consequence of global climatic changes.

6
  • MÁRCIO JOAQUIM DA SILVA
  • DIVERSITY AND CONSERVATION OF THE ICHTHYOFAUNA OF BASINS INVOLVED IN THE INTEBASIN WATER TRANSER PROJECT OF SÃO FRANCISCO RIVER

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • HELDER MATEUS VIANA ESPÍRITO-SANTO
  • CARLOS AUGUSTO ASSUMPÇÃO DE FIGUEIREDO
  • ELVIO SERGIO FIGUEIREDO MEDEIROS
  • JOSÉ ALVES DE SIQUEIRA FILHO
  • Data: 12-abr-2017


  • Resumen Espectáculo
  • Freshwater ecosystems are within the richest in terms of species number and are threatened by anthropic transformations worldwide. Impacts such as non-native species introduction and interbasin water transfer (like São Francisco River Interbasin Water Transfer Project – SF-IBWT, PISF – in Portuguese) put species conservation in peril. The concern with this matter promoted the creation of Conservation Unities (UCs – created from 1930’s onward in Brazil and have distinct restriction levels). Possibly, these mechanisms have been insufficient in species conservation, because even after their creation, non-native species contribution to natural communities has only grown over years and it is pointed as the second main cause of planet’s species extinction. Regarding this issue, we hereby tried to establish a species nomenclatural pattern in basins encompassed by PISF, previous to the artifitial connection, demonstrating the current ichthyofaunal knowledge level and building a baseline for future identification of the project’s impacts. Besides, we aim to evaluate the effectivity of UCs in protecting fish of the basins included in the project and model the invasiveness risk of exclusive species of donor basins to receptor ones. Therefore, we used primary and secondary records of species. The results showed a low similarity among species composition of donor and receptor basins of PISF, besides indicating the UCs’ importance for regional fish species conservation. Even though these UCs have a small size (~1% of Caatinga), they contain a significant percentage of associated fauna (between 24 and 31% of each basin’s species). Lastly, we noticed the PISF receptor basins show adequability to 11 species (seven families and three orders) which were exclusive to donor basin (Leporinus friderici, Megaleporinus obtusidens, Pamphorichthys hollandi, Pimelodus maculatus, Moenkhausia sanctaefilomenae, Hemigrammus brevis, Pimelodella laurenti, Cichlasoma sanctifranciscense, Centromochlus bockmanni, Conorhynchos conirostris e Pseudoplatystoma corruscans, decending order of general suitability). Within this context, we strengthen the need of creation/enlargement of UCs in encompassed basins so these can better fulfill their conservational goals, and we also corroborate the need of constant monitoring of invasive species in receptor basins of PISF’s water in order to guarantee the preservation of native ichthyc communities.

7
  • NERIVÂNIA NUNES GODEIRO
  • PHYLOGENY OF NEOTROPICAL SEIRINAE (COLLEMBOLA, ENTOMOBRYOIDEA, ENTOMOBRYIDAE) BASED IN COMPLETE MITOCHONDRIAL GENOMES

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • IURI GOULART BASEIA
  • RENATA ANTONACI GAMA
  • DOUGLAS ZEPPELINI FILHO
  • MARCELO ALOISIO SULZBACHER
  • Data: 27-sep-2017


  • Resumen Espectáculo
  • Seirinae is one of the most diverse subfamilies of Collembola, and a considerable part of this diversity is comprised by Seira Lubbock, which currently gathers approximately 220 species. So far no internal phylogeny Seirinae was proposed, what leads to difficulties in the establishment of comparative knowledge, description of new taxa, and also the understanding of the evolutionary patterns within this taxon. The dorsal chaetotaxy is the main morphological component utilised to distinguish species, and although undoubtedly diagnostic, it can be variable interspecifically. The main aim of this work is to clarify the phylogenetic relations within the Neotropical Seirinae based on both molecular and morphological data, which might result in a better internal organization of the subfamily. For this aim, 27 samples of different species belonging to Entomobryidae and one of Paronellidae were sequenced. As for molecular analyses genomic DNA of one individual/sample was extracted and quantified and sequencing libraries were built and sequenced using Next-Generation Sequencing on HiSeq 2000. The whole mitochondrial genome (DNAmt) of the species was reconstructed by two methods: SOAPdenovo_Trans and MIRA/MITOBim. Two phylogenies were then proposed: one containing only genomes reconstructed in this study as well as a complementary one, where 11 Collembola DNAmt available in a public database were also included. The phylogenies were generated through Bayesian analyses using the thirteen protein coding genes that almost correspond to the entire DNAmt. The results corroborate the current proposal which claims the order Poduromorpha as the most basal order of Collembola; the order Symphypleona as the sister-group of Entomobryomorpha, which shows clear division into two superfamilies, Isotomoidea and Entomobryoidea; the placement of Lepidocyrtoides Schött and Lepidosira Schött genera inside Entomobryinae corroborates the most recently published phylogeny; the monophyly of the internal groups of Seirinae based on molecular evidence was confirmed for the first time showing high nodal support; Tyrannoseira Bellini & Zeppelini, recently described, was validated phylogenetically; Lepidocyrtinus Börner was elevated to genus status; and three species synonyms were proposed; finally some morphological characteristics of Seirinae were identified as diagnostic and having phylogenetic signal, for instance, the quantity of macrochaetae on the first abdominal segment.

8
  • CLÓVIS COUTINHO DA MOTTA NETO
  • KARYOGENOMIC ASPECTS IN MARINE SPECIES OF PERCOMORPHA (HAEMULIDAE AND LABRIDAE): AN EVOLUTIONARY PERSPECTIVE

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • ALLYSON SANTOS DE SOUZA
  • JOSE GARCIA JUNIOR
  • MARCELO DE BELLO CIOFFI
  • PAULO AUGUSTO DE LIMA FILHO
  • Data: 29-sep-2017


  • Resumen Espectáculo
  • Percomorpha series is the largest division among vertebrates, constituting the largest and most derived clade of teleostean fishes. Among its Orders, Perciformes and Labriformes constitue adequated models for the investigation of conservatism and chromosomal diversification. In Perciformes the chromosomal conservatism is represented by basal karyotypes with 2n = 48 acrocentric, extensively shared by a considerable portion of species. The causes and extent of the karyotypic conservatism in various families of this Order are not entirely clear. In front of the diversity of species in Labriformes, more detailed aspects of its karyotype evolution or even the taxonomic status of some species deserve particular attention. In order to contribute with new information on these issues, it was implemented conventional chromosome analysis (conventional staining with Giemsa, C-banding and Ag-NORs, base-specific fluochromes) and cytomolecular (in situ hybridization with 18S rDNA, 5S rDNA) probes were implemented. Eight species of the genera Anisotremus and Haemulon of the family Haemulidae (Perciformes) were analyzed, including samples from different areas of the Atlantic, as a model of conservative evolution. In 2 species of the Bodianus genus Labridae (Labriformes), it was also analyzed aspects of the evolution of particular repetitive sequences (DNAr 18S, DNAr 5S, Alu and Tol2) in the chromosomes by hybridization with 5 methylcytosine (5mC). Additionally, phylogenetic comparisons were performed using mitochondrial (COI and 16S) and nuclear (Rhodopsin) DNA sequences to verify the taxonomic status of the Bodianus insularis species, endemic to the Meso-Atlantic islands. All Haemulidae species presented 2n = 48a, single Ag-NORs sites and reduced centromeric heterochromatin, besides considerable sharing of rDNA 5S and 18S sites, confirming the occurrence of karyotype stasis in the family. The karyotypic patterns of the populations of A. virginicus and H. chrysargyreum between the Caribbean and the South Atlantic did not reveal chromosomal variations due to the barrier of the discharges of the Amazonas / Orinoco rivers. In Bodianus, the analyzes identified a remarkable decondensed region in a subtelocentric chromosomal pair, denominated BOD region. Among its particular constitutive and functional characteristics, it is DAPI-, Argentofílica (Ag +), markedly hypomethylated and saturated with transposable elements, suggesting that the participation of these mobile elements may have contributed to its genesis and complex epigenetic dynamics. In relation to the endemic species B. insularis its genetic divergence is much inferior to that presented by differentiated species suggesting that although it represents a geographically isolated group, it constitutes a synonym of B. pulchellus. The divergence in the rates of karyotype diversification between Haemulidae and Labridae is discussed here in the light of intrinsic karyotype characteristics that may favor the buffering and the fixation of chromosomal changes and biological aspects of the species that contributes to particular conditions of karyotype evolution of these two groups of marine fish.

2016
Disertaciones
1
  • KARLLA DANIELLE JORGE AMORIM
  • Padrões citogenômicos em espécies da família Labridae da costa nordeste e ilhas oceânicas do Brasil

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • PAULO AUGUSTO DE LIMA FILHO
  • Data: 26-feb-2016


  • Resumen Espectáculo
  • Labridae possui grande interesse ecológico devido as suas complexas interações com o ambiente recifal. Representa uma das famílias mais diversas, com mais de 530 espécies, distribuídas em 82 gêneros, com importantes relações ecológicas e aspectos econômicos. Suas espécies estão amplamente representadas nos oceanos Índico, Pacífico e Atlântico. O gênero Halichoeres, é o mais diverso dentro da família. Os budiões, como são conhecidos os representantes da família, apresentam variações no padrão de cor que podem se modificar de acordo com o sexo ou fase de desenvolvimento. Diante disso, muitas espécies vêm sendo reavaliadas e reordenadas. Apesar das contribuições significativas na identificação dos mecanismos de divergência cariotípica intra e interespecíficas na família, poucas espécies tiveram seus padrões cromossômicos analisados com técnicas mais resolutivas. Aqui são apresentados dados citogenéticos que ampliam as informações citogenéticas para os gêneros Halichoeres e Thalassoma, analisando padrões heterocromáticos qualitativos, com distribuição de regiões (GC+/AT-), localização e frequência de sítios Ag-RON e hibridização fluorescente in situ com sondas ribossomais, das populações do litoral nordeste e ilhas oceânicas do Brasil. As espécies Halichoeres radiatus, H. poeyi, H. brasiliensis, H. penrosei apresentaram 2n=48 (48a), enquanto Thalassoma noronhanum apresentou 2n=48 (2m+46a). O mapeamento de sequências repetitivas ribossomais (DNAr 18S e 5S) identificou sítios DNAr 18S, múltiplos (3 a 5 loci), e DNAr 5S, simples ou múltiplos, bem como sintenia destes genes. Comparações populacionais evidenciaram diferenciações conspícuas quanto à frequência de sítios ribossomais DNAr 18S entre populações de H. radiatus. A extensa ocorrência de sítios 18S/5S co-localizados, em todas as espécies, demonstra uma condição basal das espécies de Halichoeres do Atlântico. Apesar de independentes evolutivamente, a sintenia destes genes se mostra filogeneticamente compartilhada para os gêneros Halichoeres e Thalassoma. Esta condição estrutural indica que co-localizações de sítios ribossomais 18S/5S podem ser estáveis, funcionais e mais frequentes do que se pensava em alguns grupos de peixes.

2
  • DAVI ZALDER MIGUEL
  • GENETIC DIVERSITY AND CHROMOSOMAL PATTERNS ASSOCIATED TO POST-ZIGOTIC BARRIERS BRAKAGES IN FISHES OF THE GENUS Chaetodon (PERCIFORMES)

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • PAULO AUGUSTO DE LIMA FILHO
  • Data: 26-feb-2016


  • Resumen Espectáculo
  • Interspecific hybridization has been identified in various animal groups, among these, on a recurring basis in marine fish, notably in the Chaetodontidae family. The Chaetodon is the most diverse gender in the family, with about 30 species able to produce viable hybrids. All relevant features of this phenomenon have been analyzed, but we still need more data about the break of reproductive barriers in this genre. In the present study were compared sequences of the 12S gene, 16S, rag2 and NADH of Chaetodon genus with produce known hybrids, in order to ascertain what the genetic distance between them and cytogenetic comparisons by chromosomal mapping of regions of rDNA 18S and 5S of C. striatus, C. sedentarius and C. capistratus, from South Atlantic and Caribbean. The results indicate that parental species, even having a high level of genetic divergence, maintains the potential intercross and are capable to produce viable hybrids. An extreme conservatism karyotype inter- and intraspecific was observed for the species. Despite the long interval of separation between some species, interspecific reproductive potential as well an environmental and biological factors may have been favored by extensive karyotype homogeneity present in the family.

3
  • JULIANA GALVÃO BEZERRA
  • CHROMOSOME REARRANGEMENTS, GENOMIC EVOLUTION AND CARIOTYPICAL DIVERSITY IN TETRAODONTIFORMES

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • GIDEÃO WAGNER WERNECK FELIX DA COSTA
  • PAULO AUGUSTO DE LIMA FILHO
  • Data: 03-mar-2016


  • Resumen Espectáculo
  • Tetraodontiformes order is featured for exhibiting extremely singular morphological and genetics characteristics, representing one of the main derivatives branches of the teleosts diversification. Some of its groups constitute vertebrates with the most compact genomes, qualifying them as a model of genome evolution studies. This genomic feature looks to be the result of evolutionary DNA loss. In order to perform cytogenomic comparisons between species of some Tetraodontiformes groups, cytogenetic analyzes were done on species Cantherhines pullus and Monacanthus chinensis (Monacanthidae) Sphoeroides testudineus (Tetraodontidae) and Melichthys niger (Balistidae). The analysis used classical methodologies (Giemsa staining, C-banding, Ag-NORs), fluorochromes base-specific staining and chromosomal mapping by fluorescence in situ hybridization (FISH) of telomeric and the ribosomal sequences 18S and 5S. The species C. pullus and M. niger revealed karyotypes composed of 40 chromosomes, all acrocentric. Both have only a single pair of NORs and heterochromatin, mostly, pericentomeric, however, the telomeric sequences mapping in C. pullus showed interstitial telomeric marks, result of the chromosomal rearrangements dynamics wich occurrs in the group. Cytogenetic comparisons among the species S. testudineus (2n = 46, NF = 74) and M. chinensis (2n = 34, NF = 34) revealed disparate karyotypes in relation to diploid and chromosomal arm numbers, as well as the tiny size of S. testudineus chromosomes in relation to the large acrocentric chromosomes present in M. chinensis. The striking differences on the chromosomes size, karyotypical structure and heterochromatin distribution evidences high chromosomal dynamics and multiple karyoevolutive trends present in Tetraodontiformes. In face of the interest on the genomic evolution in this Order, new contributions to the knowledge of their genomes and karyotypes are provided and discussed over cytogenomic and evolutionary perspectives.

4
  • MILENA CORDEIRO DE AMORIM LOPES
  • EVOLUÇÃO DAS TOLERÂNCIAS CLIMÁTICAS EM LEGUMINOSAS ARBÓREAS NEOTROPICAIS

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • BRÁULIO ALMEIDA SANTOS
  • JOMAR GOMES JARDIM
  • LEONARDO DE MELO VERSIEUX
  • Data: 11-mar-2016


  • Resumen Espectáculo
  • A alta diversidade de plantas vasculares nos trópicos está correlacionada com diversos fatores, como, por exemplo, fatores climáticos. Alterações no ecossistema podem gerar oportunidade ecológica e impulsionar irradiações adaptativas. Todavia, alguns clados não irradiam frente a uma aparente oportunidade ecológica, algumas linhagens mantêm seus nichos conservados ao longo do tempo ou convergem para nichos similares. Este trabalho avalia a evolução das tolerâncias climáticas de uma linhagem antiga de plantas arbóreas da família Leguminosae, especificamente do clado Bowdichia integrante do grande clado Genistoide da subfamília Papilionoideae. A fim de caracterizar a evolução do nicho climático do clado, registros das distribuições geográficas das espécies foram coletados em banco de dados online nacionais e internacionais; foram efetivadas análises filogenéticas e de datação molecular; construídos modelos de nicho ecológico; calculados os índices de sobreposição; produzidos Perfis de Ocupação de Nicho (PON) no contexto filogenético; e calculada a disparidade climática através do tempo. Como resultado, foram evidenciados altos valores de sobreposição entre algumas espécies de subclados distintos, valores mais altos do que o esperado por Movimento Browniano entre outras altamente aparentadas, e baixos valores de sobreposição entre algumas espécies em um mesmo subclado. Uma heterogeneidade na ocupação de cada variável bioclimática entre as espécies foi evidenciada através dos PONs, e, levando em consideração o contexto filogenético, a irradiação das espécies, através do tempo, se deu sobre uma grande variedade de espaços e condições bioclimáticas, sendo observados eventos de convergência, divergência e conservantismo de nicho. Além disso, no que diz respeito à disparidade através do tempo, é sugerido que a evolução do clado tenha ocorrido sob eventos gradativos e tardios de diversificação ao invés de uma irradiação adaptativa rápida por oportunidade ecológica no momento anterior a irradiação do clado. O estudo reforça a teoria de que regiões com alta precipitação e alta temperatura média anual são altamente biodiversas e refuta a teoria dos refúgios pleistocênicos como explicação para a maior riqueza na Amazônia. Além disso, a maior heterogeneidade de hábitats e de ocupação de nicho não estão correlacionadas com o tempo de origem de uma linhagem. Também é sugerido que a evolução divergente tenha sido favorecida no Plio-Pleistoceno com surgimento de oportunidades ecológicas após eventos glaciais e interglaciais.

5
  • LUCIANO DE FREITAS BARROS NETO
  • Taxonomic validity of the small armored catfish Parotocinclus cearensis Garavello, 1977 (Siluriformes: Loricariidae), Northeast Brazil

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • FULVIO AURELIO DE MORAIS FREIRE
  • PABLO CÉSAR LEHMANN ALBORNOZ
  • Data: 29-mar-2016


  • Resumen Espectáculo
  • The Parotocinclus genus comprises 29 valid nominal species of small Hypoptopomatinae
    armored catfishes widely distributed in cisandine Neotropical Region. Although the subfamily
    Hypoptopomatinae is monophyletic, the genus has been recognized as a polyphyletic
    assemblage. In northeastern Brazil, which covers four distinct ecoregions, Parotocinclus show
    a high species richness, represented by twelve species described to date, usually with
    restricted geographic distribution. Among these, P. cearensis from Acaraú river basin in
    western Ceará State, was described from the distinction of the type series of P. spilosoma,
    from Paraíba do Norte river basin, in Paraíba State, having been some controversy regarding
    the validity of the first. In recente ichthyological surveys in several drainages of the Mid-
    Northeastern Caatinga and São Francisco ecoregions some Parotocinclus specimens similar
    to P. cearensis were captured, suggesting that this species has a wide distribution in
    Northeastern Brazil, or it is a species complex. To address this taxonomic uncertainty,
    morphological and molecular analyzes were performed, which confirmed the validity of P.
    cearensis and identified the presence of possibles new related species. Thus, there is provided
    a redescription of P. cearensis and P. spilosoma, and identified the co-occurrence of lineages
    in some hydrographic basins, suggesting a secondary contact.

6
  • JAERTON CARVALHO DE SOUSA JÚNIOR
  • APOCYNACEAE JUSS. FROM ATLANTIC FOREST OF RIO GRANDE DO NORTE STATE, BRAZIL

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • FERNANDA ANTUNES CARVALHO
  • LEANDRO DE OLIVEIRA FURTADO DE SOUSA
  • Data: 31-ago-2016


  • Resumen Espectáculo
  • This is the floristic taxonomic inventory of the Apocynaceae occurring in the Atlantic Forest remnants from Rio Grande do Norte state, by consulting the specimens deposited in herbaria, field expeditions and description of the collected specimens in the laboratory. Twenty-five species in eighteen genera were recorded in three subfamilies. The genera with more species were DitassaR.Br (4 spp.), AspidospermaMart. & Zucc. e MandevillaLindl. (3 spp.). The other genera are represented by one species each. Eightnew records are presenting for the flora of the state along with its several conservation statuses. Five of these species are placed in genera that are also reported here for the first time to the Rio Grande do Norte state (CynanchumL., MacoubeaAubl., OdontadeniaBenth., TabernaemontanaL. and TemnadeniaMiers). The study also presents identification key, taxonomic comments and geographic distribution of genera and species, descriptions, illustrations, photos and maps of the speciesfound in the study area.

7
  • TIANISA PRATES BOEIRA
  • SPERMACOCEAE (RUBIACEAE) FROM RIO GRANDE DO NORTE STATE, BRAZIL

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • AUGUSTO FRANCENER NOGUEIRA GONZAGA
  • LEANDRO DE OLIVEIRA FURTADO DE SOUSA
  • Data: 31-ago-2016


  • Resumen Espectáculo
  • Rubiaceae is the fourth largest family of Angiosperms, with 13.526 species and 620 genera. In Brazil, the family is represented by 1.375 species, of which 389 occurs in the Northeast region. The Spermacoceae is a tribe with pantropical distribution pattern, characterized by predominantly herbaceous plants with fimbriate stipules and flowers usually tetramerous, represented in Brazil by 217 species and 17 genera. This study aimed the taxonomic survey of the Spermacoceae in Rio Grande do Norte (RN), in order to contribute to the knowledge of the flora, as well as offer support to the correct identification of this group's species, which are easily confused due to the morphological resemblance, even at the generic level. For this study, field expeditions were made to collect and observe the Spermacoceae in areas of the Atlantic Forest and Caatinga in the state, followed by the identification, description of the specimens and further incorporation in herbaria. Were registred 24 species and eight genera. The most species-rich genera were Borreria (8 spp.), Mitracarpus (6 spp.) and Hexasepalum (4 spp.); Oldenlandia (2 spp.) each and Leptoscela, Richardia, Spermacoce e Staelia had only one species each. Six species are new records for the flora of Rio Grande do Norte: Borreria ocymifolia, Mitracarpus baturitensis, M. hirtus, M. longicalyx, Oldenlandia corymbosa e Staelia virgata. Descriptions, illustrations, identification key, habitat data, fenology and distribution of the species are presented.

2015
Disertaciones
1
  • RAIMUNDO LUCIANO SOARES NETO
  • CAPPARACEAE: FLORA DO RIO GRANDE DO NORTE E BIOGEOGRAFIA NO SEMIÁRIDO BRASILEIRO

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • LEONARDO DE MELO VERSIEUX
  • JEFFERSON GUEDES DE CARVALHO SOBRINHO
  • Data: 25-feb-2015


  • Resumen Espectáculo
  • Capparaceae abrange 25 gêneros e 480 espécies, das quais aproximadamente 110 são compreendidas em 18 gêneros na região Neotropical. Sua distribuição é pantropical com grande frequência em ambientes sazonalmente secos. Seus representantes apresentam hábito arbóreo, arbustivo e raramente lianescente, folhas simples ou compostas 3–folioladas, brácteas florais reduzidas e decíduas, flores tetrâmeras e noturnas com estames exsertos numerosos, ovário súpero sobre um ginóforo, frutos carnosos deiscentes ou indeiscentes. Para o Brasil são registrados 12 gêneros e 28 espécies das quais 12 são endêmicas do país, ocorrendo preferencialmente em savana estépica (strictu senso), floresta estacional semidecidual e restinga. O presente trabalho está dividido em dois capítulos. O primeiro capítulo aborda o padrão de distribuição das espécies que ocorrem no semiárido brasileiro e sua distribuição intra Caatinga. Os padrões de distribuição foram determinados a partir da revisão da distribuição das espécies em coleções de herbários e complementados com dados obtidos de bibliografia específica da família. Foram avaliadas a riqueza, esforço de coleta e similaridade florística das espécies intra Caatinga pelo método de quadrículas de 1 × 1 grau. Seis gêneros e oito espécies foram registradas na Caatinga, sendo quatro endêmicas do Brasil, dessas, apenas uma é endêmica da Caatinga, e quatro apresentaram distribuição neotropical. Quatro padrões foram observados: restrito ao NE, amplo e contínuo no Brasil, disjunto e neotropical. Todas as espécies foram registradas na Bahia, estado que apresentou a maior riqueza de espécies por quadrícula e também notável esforço amostral das espécies da família. O estado do Piauí apresenta áreas prioritárias para futuras coletas de Capparaceae, devido a pouca representatividade da família no estado. A análise de similaridade florística intra Caatinga mostrou-se baixa, 22%, provavelmente devido a poucas espécies da família na região e a ampla distribuição das mesmas. No segundo capítulo é apresentada a flora de Capparaceae para o Rio Grande do Norte (RN), visto que o estado possui uma flora pouco conhecida, com estudos pontuais. Através de coletas no estado e revisão de herbário foram registrados cinco gêneros e seis espécies de Capparaceae no RN: Capparidastrum (1); Crateva (1); Cynophalla (2); Mesocapparis (1) e Neocalyptrocalyx (1). Capparidastrum frondosum e Mesocapparis lineata são novas ocorrências para o estado. São apresentadas uma chave de identificação, descrições e imagens, comentários sobre a biologia das espécies e Unidades de Conservação onde ocorrem.

2
  • JUAN PABLO ZURANO
  • RELAÇÃO ENTRE A DIVERGÊNCIA DE NICHO E AS CARACTERÍSTICAS FENOTÍPICAS DOS CANÍDEOS DA AMÉRICA DO SUL

  • Líder : GABRIEL CORREA COSTA
  • MIEMBROS DE LA BANCA :
  • GABRIEL CORREA COSTA
  • CARLOS ROBERTO SORENSEN DUTRA DA FONSECA
  • PEDRO CORDEIRO ESTRELA DE ANDRADE PINTO
  • Data: 27-feb-2015


  • Resumen Espectáculo
  • A oportunidade ecológica que surge com a colonização de novos ambientes pode favorecer a diversificação morfológica e ecológica das espécies. Os canídeos chegaram no continente sul-americano depois da formação do istmo do Panamá e tiveram uma rápida diversificação, ocupando uma grande variedade de hábitats em todo o continente. Analisamos em um contexto filogenético a evolução e divergência nas características morfológicas e ecológicas de oito espécies de canídeos endêmicos da América do Sul. Para isso utilizamos métodos de morfometria geométrica, modelagem de nicho e métodos comparativos. Ainda, utilizando regressões filogenéticas baseadas em distância, testamos se as características morfológicas das espécies estão relacionada com a radiação do grupo em ambiente diferentes ao longo do continente. Observamos que as diferenças nas características do nicho climático são independentes do tempo de divergência entre as espécies. Ainda, encontramos que a forma do crânio não apresenta uma estruturação filogenética, estando relacionada com gradientes climáticos, e com características do nicho trófico. A forma da mandíbula apresenta sinal filogenético e está relacionada com gradientes climáticos e a dieta. Entretanto, o tamanho corporal não apresenta sinal filogenético e está relacionado com característica do nicho trófico. Nossos resultados evidenciam que a diversificação dos canídeos na América do Sul está relacionada com a divergência e ocupação dos nichos ao longo do continente, e que características bioclimáticas e do nicho trófico tem influenciado a evolução do fenótipo nessas espécies. Este estudo apresenta pela primeira vez evidências de uma possível radiação adaptativa em escala continental dos Canídeos da América do Sul.

3
  • JULIETH DE OLIVEIRA SOUSA
  • O GÊNERO GEASTRUM PERS. (GEASTRACEAE, BASIDIOMYCOTA): OCORRÊNCIA, CHAVE TAXONÔMICA E DESCRIÇÕES DE NOVAS ESPÉCIES DO NORDESTE BRASILEIRO

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • BRUNO TOMIO GOTO
  • FRANCISCO DE DIEGO CALONGE
  • Data: 13-mar-2015


  • Resumen Espectáculo
  • Geastraceae é uma família monofilética pertencente ao clado “gomphoid-phalloid”, composta apenas por dois gêneros Geastrum e Myriostoma, que são muito próximos tanto na morfologia quanto na filogenia, ambos apresentam basidiomas angiocárpicos, poro apical, basidiosporos liberados passivamente através do mecanismo de fole e exoperídio deiscente em raios, sendo diferenciados pelo número de ostíolos e pedicelos. Devido à deiscência do exoperídio, são conhecidos popularmente como “estrelas-da-terra”. Ocorrem geralmente degradando liteira ou madeira, sendo, portanto, saprofíticos, com raras exceções de espécies ectomicorrízicas. Geastrum é um dos gêneros gasteroides mais diversos no Brasil, com 51 registros. Contudo, existem lacunas de conhecimento quanto à distribuição geográfica e sistemática deste gênero no país. Especialmente, devido às características encontradas em território brasileiro (megavidersidade, “hotspots” e tamanho continetal), as quais o tornam área prioritária para inventário de espécies. Desta forma, o presente trabalho objetivou realizar inventariar espécies Geastrum ocorrentes em áreas da Caatinga e Mata Atlântica do Nordeste. Foram realizadas pelo menos duas expedições de campo, com duração aproximada de quatro dias, durante períodos de chuva dos anos 2013 e 2014 para as áreas: Reserva Biológica de Guaribas, localizada no domínio Mata Atlântica da Paraíba e Reserva Ecológica Estadual Mata do Pau Ferro, localizada nos “Brejos Paraibanos”. Além disso, foram analisados espécimes depositados no Herbário UFRN-Fungos, os quais foram coletados no Parque Nacional Vale do Catimbau, Caatinga de Pernambuco. Os espécimes foram identificados de acordo com a análise de macro e micromorfologia, seguindo literatura específica. Foram analisados cerca de 400 basidiomas, distribuídos em 73 exsicatas. Foram identificadas 21 espécies, 19 em nível de espécie, sendo duas destas propostas como novas espécies (Geastrum magnosporum sp. nov. e G. pusillupilosum sp. nov.) e duas em nível de gênero (sp. e aff.). Destaca-se um novo registro para o Brasil, 12 novos registros para o estado da Paraíba, quatro novos registros para a região Semiárida do Brasil e seis novos registros para a vegetação de “Brejos de Altitude”. Desta forma, os resultados representam um aumento de 200% no conhecimento do gênero Geastrum na Paraíba, 24 % no Semiárido e 55% no “Brejo de Altitude”, demostrando que o Nordeste brasileiro apresenta uma alta riqueza de espécies.

4
  • MARIA APARECIDA FERNANDES
  • PADRÕES TEMPORAIS E GRAU DE DIVERSIFICAÇÃO CARIOTÍPICA EM ESPÉCIES ATLÂNTICAS DA FAMÍLIA ACANTHURIDAE (PERCIFORMES)

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • SATHYABAMA CHELLAPPA
  • ROBERTO FERREIRA ARTONI
  • Data: 26-mar-2015


  • Resumen Espectáculo
  • A família Acanthuridae é um grupo bastante representativo dentre os peixes marinhos e que desempenha um papel fundamental na dinâmica ecológica dos recifes de corais. Três espécies pertencentes ao gênero Acanthurus são comuns ao longo dos recifes costeiros do Atlântico Ocidental: A. coeruleus, A. bahianus e A. chirurgus. No presente estudo, são apresentados dados citogenéticos para estas três espécies de Acanthurus com base em métodos citogenéticos clássicos e no mapeamento de sequências ribossomais repetitivas, como DNAr 18S e 5S, além de sondas teloméricas com a finalidade de auxiliar na compreensão da carioevolução deste grupo. O padrão citogenético dessas espécies indica que as etapas sequenciais de rearranjos cromossômicos, que datam 19-5 milhões de anos atrás (Ma), são responsáveis por suas diferenças interespecíficas. Acanthurus coeruleus (2n=48; 2sm + 4st + 42a), A. bahianus (2n=36; 12m + 2sm + 4st + 18a) e A. chirurgus (2n=34; 12m + 2sm + 4st + 16a) compartilham um antigo conjunto de três pares cromossômicos originados através de inversões pericêntricas. Um conjunto de seis grandes pares metacêntricos formados por translocações Robertsonianas (Rb) encontrado em A. bahianus e A. chirurgus e uma suposta fusão em tandem presente em A. chirurgus são eventos mais recentes. A falta de sequências teloméricas intersticiais (ITS), apesar de várias fusões cêntricas em A. bahianus e A. chirurgus pode estar relacionada com o longo período de tempo após a sua ocorrência (estimado em 5 Ma). Além disso, as homeologias entre os pares de cromossomos que carregam os genes ribossomais, além de outras características estruturais, destacam grandes regiões cromossômicas conservadas nas três espécies. Nossos resultados indicam que as mudanças macroestruturais ocorreram durante a cladogênese dessas espécies não foram seguidas por rearranjos microestruturais visíveis nos cariótipos.

5
  • AMANDA TÔRRES BORGES
  • VALIDAÇÃO DE ESPÉCIES DE Centropomus (Centropomidae, Perciformes) DO LITORAL DO RIO GRANDE DO NORTE, ATRAVÉS DE CARACTERIZAÇÃO CITOGENÉTICA E MOLECULAR

  • Líder : WAGNER FRANCO MOLINA
  • MIEMBROS DE LA BANCA :
  • WAGNER FRANCO MOLINA
  • RICARDO DE SOUZA ROSA
  • ROBERTO FERREIRA ARTONI
  • Data: 27-mar-2015


  • Resumen Espectáculo
  • A família Centropomidae é composta por três gêneros, Centropomus, Lates e Psammoperca. Centropomus é o grupo mais diversificado, apresentando seis espécies com ocorrência no Oceano Atlântico Ocidental, C. undecimalis (Bloch, 1792), C. poeyi Chávez, 1961, C. parallelus Poey, 1860, C. mexicanus Bocourt, 1868, C. pectinatus Poey, 1860 e C. ensiferus Poey, 1860. Algumas destas espécies são consideradas crípticas, por apresentarem características morfológicas pouco resolutivas para fins de identificação. Apesar do grande interesse como recurso natural e para cultivo, aspectos sobre sua diversidade e padrões cariotípicos são pouco conhecidos. Neste trabalho classificações morfológicas e comparações de sequências mitocondriais 16S foram utilizadas para identificação das espécies do gênero Centropomus com ocorrência no Rio Grande do Norte, nordeste do Brasil. Duas espécies foram identificadas, C. undecimalis e C. mexicanus, que tiveram seus aspectos cromossômicos analisados através de métodos citogenéticos clássicos (coloração convencional, bandamento C, Ag-RONs), coloração com fluorocromos AT- e GC-específicos, bandas de replicação pela incorporação do análogo de base 5´BrdU ( 5-bromo-2´-deoxiuridina) e mapeamento cromossômico in situ de sequências (TTAGGG)n e dos genes RNAr 18S e 5S. Ambas as espécies apresentaram 2n=48 cromossomos acrocêntricos, com sítios ribossomais (Ag-RON/DNAr 18S/Mitramicina+) no segundo par cromossômico, em posição telomérica no braço longo de C. mexicanus) e intersticial em C. undecimalis. O par organizador nucleolar (par 2) se mostra um marcador citotaxonômico resolutivo para estas duas espécies. Os dados gerados revelam uma menor diversidade de espécies de Centropomus do que se acreditava, sugerindo uma maior atenção na identificação taxonômica das espécies, tendo em vista otimizar ações de exploração comercial, conservação biológica e cultivo.

6
  • MARLON DELGADO MELO
  • OPISTOBRÂNQUIOS (MOLLUSCA: HETEROBRANCHIA) DO RIO GRANDE DO NORTE, BRASIL, INCLUINDO 34 NOVAS OCORRÊNCIAS

  • Líder : FULVIO AURELIO DE MORAIS FREIRE
  • MIEMBROS DE LA BANCA :
  • SIMONE NUNES BRANDÃO
  • ELINEI ARAUJO DE ALMEIDA
  • FRANKLIN NOEL DOS SANTOS
  • Data: 29-may-2015


  • Resumen Espectáculo
  • A taxonomia é a base de qualquer ciência que envolva biodiversidade, como a ecologia e biogeografia. Entre os invertebrados marinhos, os moluscos gastrópodes são um dos grupos mais diversos. O grupo “Opistobranchia” apresentam redução, internalização ou ausência da concha calcária, e apresenta também a maior diversidade de formas entre os gastrópodes. Estima-se que existam entre 5000 e 6000 espécies em todo globo terrestre, dentre estas, aproximadamente 235 são reportadas para o Brasil, com apenas 12 registradas para o estado do Rio Grande do Norte. O presente projeto visa o levantamento taxonômico dos opistobrânquios no litoral do estado do Rio Grande do Norte, Brasil. Para isto foram realizadas expedições às praias do litoral deste estado. Alguns opistobrânquios foram coletados diretamente no campo, enquanto outros foram separados em laboratório de substratos coletados (i.e., macroalgas, cascalho e pequenas rochas soltas). As coletas se deram manualmente sobre os arrecifes na região entre-marés, ou através de mergulhos livres e autônomos (sublitoral). As espécies encontradas foram medidas e fotografadas in vivo no Laboratório Didático II do Departamento de Botânica, Ecologia e Zoologia da UFRN. A identificação dos espécimes foi feita através da comparação dos caracteres diagnósticos de cada grupo, embasada na literatura específica. Foram encontrados 34 novos registros para o litoral do RN, dentre estes, quatro novos registros também para o nordeste, assim como três novas ocorrências para o Brasil e Atlântico Sul. O presente levantamento contribuiu, portanto, para uma melhor estimativa da fauna de opistobrânquios do litoral norte rio-grandense. Acredita-se que são necessários mais estudos que envolvam diferentes aspectos ecológicos, biológicos e biogeográficos dos opistobrânquios no Brasil e especialmente no Nordeste.

7
  • MARIANA PIRES DE MOURA
  • Filogenia molecular do gênero Morganella Zeller (Fungi: Basidiomycota) utilizando marcadores ITS

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • BIANCA DENISE BARBOSA DA SILVA
  • MARIA PAZ MARTÍN ESTEBAN
  • Data: 25-ago-2015


  • Resumen Espectáculo
  • Com o desenvolvimento e aprimoramento das técnicas para estudos moleculares e sua consequente aplicação à sistemática, relevantes modificações ocorreram na classificação dos gasteromicetos. O gênero Morganella pertence à família Lycoperdaceae, e é caracterizado, principalmente, pelo hábito lignícola e presença de paracapilícios. Dados recentes demonstram a descoberta de novas espécies para o grupo e a existência de uma grande diversidade de espécies ocorrendo em ecossistemas tropicais. Entretanto, as relações filogenéticas do gênero, como também a classificação taxonômica, ainda requerem revisões para serem melhor compreendidas, além de que, trabalhos que abordem esse tema ainda são escassos na literatura. Desta forma, objetivou-se neste trabalho realizar estudos de filogenia molecular com espécies do gênero Morganella, visando ampliar o conhecimento sobre a filogenia do grupo mediante a inclusão de dados de espécies tropicais. Para isso, os espécimes utilizados, tanto para as extrações de DNA quanto para a revisão morfológica, foram obtidos a partir de herbários brasileiros e estrangeiros. Para a análise morfológica foram observados caracteres relevantes para a taxonomia do grupo. Para as análises filogenéticas foram utilizados os métodos de Máxima Parcimônia e Análise Bayesiana, utilizando-se o espaçador interno transcrito (ITS) do DNA ribossômico nuclear. Nas análises filogenéticas realizadas, os representantes de Morganella formaram um clado monofilético com um bom valor de suporte, e com base nestes resultados o gênero não deve ser incluído como subgênero de Lycoperdon. As análises indicaram que M. pyriformis não se agrupa com os demais representantes de Morganella, e portanto não deve ser incluído no grupo como representante do subgênero Apioperdon, pois se trata de um representante de Lycoperdon. Por outro lado, M. fuliginea, M. nuda, M. albostipitata, M. velutina, M. subincarnata, se encontram agrupadas, com valores de suporte alto, dentro do gênero Morganella. Morganella arenicola, com base em estudos morfológicos e moleculares, não se agrega em Morganella. Morganella nuda se agrupou com M. fuliginea dando indícios de que podem se tratar de uma variação intraespecífica. Os resultados das análises realizadas favorecem para um melhor esclarecimento e posição das espécies de Morganella. No entanto, estudos adicionais utilizando um maior número de espécies, e também outros marcadores moleculares se fazem necessários para um melhor entendimento da filogenia de Morganella.

8
  • KHADIJA JOBIM
  • ARBUSCULAR MYCORRHIZAL FUNGI (GLOMEROMYCOTA) IN DIFFERENT DEPTH LEVELS OF FRAGMENTED FOREST, SETE LAGOAS, MG

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • DANIELLE KARLA ALVES DA SILVA
  • SANDRA FARTO BOTELHO TRUFEM
  • Data: 11-nov-2015


  • Resumen Espectáculo
  • Arbuscular mycorrhizal fungi (AMF) are important components of soil-plant system due to mutualistic symbiosis with plant roots, promoting the increase in the growth of the plant symbiont and tolerance to environmental stresses. Ecological studies on the structure of AMF communities have focused most in the restricted areas the superficial zone, however, some studies have suggested that the abundance and diversity of AMF may differ considerably according to soil depth and it is relevant to studies devoted to the assessment of the diversity of AMF, especially in impacted areas, considering that the harmful practices of land use tend to the impoverishment of species. This study aimed to evaluate the occurrence of AMF in different soil depths in forest fragments of the Fazenda Experimental Embrapa Milho e Sorgo, a transition area between the Cerrado and Atlantic Forest biomes located in Sete Lagoas, MG, in order to characterize the composition and distribution AMF species depending on the vertical distribution in the soil. For this, in january 2014, soil samples were taken in eight forest fragments, with maximum deepth of 230 cm, as the follow: I: 0-20 cm; II: 20 - 40 cm; III: 40 - 60 cm; IV: 60 - 80 cm; V: 80 - 120 cm; VI: 120 - 160 cm and VII: 160 - 230 cm. Part of the soil samples was destined for the implementation of trap crops for subsequent extraction and collecting of AMF glomerospores and part was destined for physicalchemical evaluation. A total of 62 species belonging to nine families was recorded: Acaulosporaceae (29) Ambisporaceae (1), Archaeosporaceae (2), Dentiscutataceae (2), Diversisporaceae (1), Entrophosporaceae (2), Glomeraceae (19), Paraglomeraceae (3) and Scutellosporaceae (2). A tendency to decrease the number of species and diversity in relation to depth was detected, and a significant variation between different depths was found. Some species have occurred only in surface areas or in deep zones, as well as other species were widely distributed over the entire gradient. Ca, P, Mn, organic matter and pH were the soil properties that affect the distribution of the majority of the species found. These results show that the sampling of deeper soil zones on the AMF diversity surveys allows to access a diversity hitherto neglected including the detection of species with restricted occurrence in these soil zones.

2014
Disertaciones
1
  • MARIANA CAVALCANTE E ALMEIDA SÁ
  • TAXONOMIA DE RUSSULACEAE LOTSY AGARICOIDES DO SEMIÁRIDO BRASILEIRO

  • Líder : FELIPE WARTCHOW
  • MIEMBROS DE LA BANCA :
  • FELIPE WARTCHOW
  • BRUNO TOMIO GOTO
  • VAGNER GULARTE CORTEZ
  • Data: 19-feb-2014


  • Resumen Espectáculo
  • O Brasil é um país de grande biodiversidade e possui potencialmente 20% de toda biodiversidade mundial. Diante deste quadro, o conhecimento sobre a micobiota brasileira é escasso e isso se agrava em regiões como o semiárido brasileiro. O presente trabalho teve como objetivo investigar as espécies de fungos da família Russulaceae para o semiárido, através de estudos taxonômicos. As coletas foram realizadas durante o período chuvoso, em áreas de conservação de alguns estados do Nordeste. Os materiais foram descritos, ilustrados macro e microscopicamente, juntamente com as análises da ornamentação de esporos, estes foram obtidos com microscópio eletrônico de varredura e outras microestruturas de cunho taxonômico. Como resultado foram encontradas 12 espécies. O gênero mais rico é Russula com sete espécies, Lactifluus com quatro e por fim Lactarius com uma espécie. Todas as espécies são novas para a ciência, aumentando o conhecimento sobre a riquesa de Russulaceae no Brasil de 41 para 52 espécies, este presente trabalho representa 4,5% da riqueza de táxons conhecidos para o Brasil e evidencia que o semiárido é uma área rica para estudos taxonômicos desta família.

2
  • ANA CLARISSA MOURA RODRIGUES
  • FUNGOS GASTEROIDES (BASIDIOMYCOTA, AGARICOMYCETES) DE TRÊS ÁREAS DE SEMIÁRIDO NO ESTADO DO CEARÁ, BRASIL

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • FELIPE WARTCHOW
  • VAGNER GULARTE CORTEZ
  • Data: 20-feb-2014


  • Resumen Espectáculo
  • Os fungos gasteroides englobam várias linhagens distintas de basidiomicetos que foram agrupados por apresentar algumas características marcantes em comum, como o desenvolvimento angiocárpico dos basidiomas e liberação passiva dos basidiosporos. Durante longo período, esses fungos foram acomodados na classe Gasteromycetes. Todavia, estudos bioquímicos e moleculares mostraram a polifilia do grupo e, atualmente, esta classe encontra-se destituída de valor taxonômico. Esses organismos influenciam a ecologia dos mais diversos ecossistemas, entretanto, são pouco estudados e o conhecimento de sua diversidade nos ecossistemas neotropicais permanece insuficiente, apesar dos estudos que vem sendo desenvolvidos nos últimos anos. A região semiárida brasileira possui muitas áreas com a sua micobiota praticamente inexplorada. O Estado do Ceará apresenta áreas de extrema importância biológica, e para este estudo foram escolhidas três Unidades de Conservação: Área de Proteção Ambiental da Serra da Ibiapaba, Parque Nacional de Ubajara e a Área de Proteção Ambiental de Baturité. Portanto, o objetivo deste trabalho foi inventariar os fungos gasteroides ocorrentes nestas três áreas localizadas na região semiárida do Ceará. As expedições, herborização e análise dos espécimes foram baseadas em metodologias tradicionais utilizadas para identificação de fungos gasteroides. Foram identificadas 16 espécies pertencentes a 5 famílias: Agaricaceae, Clathraceae, Geastraceae, Nidulariaceae e Phallaceae. Morganella nuda Alfredo & Baseia é reportada pela segunda vez para o mundo e Blumenavia angolensis (Welw. & Curr) Dring e Mutinus elegans (Mont.) E. Fisch. correspondem a primeiros registros para o Nordeste brasileiro. Com exceção de Abrachium floriforme (Baseia & Calonge) Baseia & T.S. Cabral e Geastrum lloydianum Rick, todas as demais espécies estudadas são consideradas novos registros para o Ceará, aumentando a lista de fungos gasteroides da região de 3 para 17 espécies. As espécies identificadas foram depositadas no acervo do Herbário da Universidade Federal do Rio Grande do Norte. Embora essas áreas tenham se mostrado propícias para o estudo de fungos gasteroides, ainda são necessários maiores esforços de coleta para ampliar o conhecimento desses fungos na região.

3
  • DENISE MARIA CUNHA DE SOUSA
  • CARACTERIZAÇÃO GENÉTICA E EVOLUÇÃO DOS VÍRUS DENGUE NO ESTADO DO RIO GRANDE DO NORTE

  • Líder : JOSELIO MARIA GALVAO DE ARAUJO
  • MIEMBROS DE LA BANCA :
  • JOSELIO MARIA GALVAO DE ARAUJO
  • JOSE VERISSIMO FERNANDES
  • RITA MARIA RIBEIRO NOGUEIRA
  • Data: 21-feb-2014


  • Resumen Espectáculo
  • A dengue é considerada a doença transmitida por artrópodes mais importante do mundo devido ao elevado número de pessoas que correm o risco de contraí-la, principalmente em regiões tropicais e sub-tropicais do planeta. O agente etiológico da doença é o vírus dengue (DENV), um vírus de RNA fita simples e polaridade positiva, pertencente à família Flavivridae e ao gênero Flavivirus. São conhecidos quatro sorotipos distintos: DENV-1, DENV-2, DENV-3 E DENV-4. Uma das suas principais características é a elevada variabilidade genética que torna clara a necessidade da realização de estudos filogenéticos e evolutivos com o objetivo de compreender aspectos essenciais como: epidemiologia, virulência, padrões de migração e características antigênicas. O objetivo deste estudo foi realizar a caracterização genética dos vírus dengue circulantes no estado do Rio Grande do Norte durante o período de Janeiro de 2010 a Dezembro de 2012. Realizou-se o sequenciamento do gene do envelope (1485pb) dos sorotipos DENV-1 (N=6), DENV-2 (N=6) e DENV-4 (N=4) isolados de casos clínicos de diferentes municípios do estado do Rio Grande do Norte. A análise filogenética foi realizada utilizando o programa Mega v5.2, método de Neighbor-Joining e modelo Tamura-Nei. No Brasil, foi constada a circulação de apenas um genótipo de DENV-1 (genótipo V), um genótipo DENV-2 (asiático/americano) e dois genótipos de DENV-4 (genótipos I e II) no Brasil. As cepas brasileiras de DENV-1 estão dividas em duas linhagens temporalmente distintas (BR-I e BR-II), as cepas brasileiras de DENV-2 estão subdividas em quatro linhagens (BRI-IV) e o genótipo II de DENV-4 apresentou três linhagens de cepas brasileiras (LI-III). Os vírus isolados no Rio Grande do Norte pertencem a linhagem BR-II (DENV-1), BR-IV (DENV-2) e BR-III (DENV-4). A fonte de importação destes vírus para o Brasil é principalmente o Caribe e países próximos da América Latina. Foram detectadas substituições de aminoácidos ao longo dos três domínios da proteína E, tornando clara a necessidade da realização de estudos que associem dados epidemiológicos e moleculares para melhor compreensão dos efeitos dessas mutações. Este é o primeiro estudo sobre caracterização genética e evolução dos vírus dengue no Estado do Rio Grande do Norte, Brasil.

4
  • FELIPE DE MEDEIROS MAGALHÃES
  • Morfologia larval e sua importância para a sistemática e taxonomia de anfíbios anuros

  • Líder : ADRIAN ANTONIO GARDA
  • MIEMBROS DE LA BANCA :
  • ADRIAN ANTONIO GARDA
  • BRUNO CAVALCANTE BELLINI
  • FLORA ACUNÃ JUNCÁ
  • Data: 25-feb-2014


  • Resumen Espectáculo
  • Os anfíbios anuros formam um grupo comprovadamente monofilético e apresentam várias características em comum que estão relacionadas, principalmente, a adaptação das espécies à ambientes úmidos, aonde estas se desenvolvem e reproduzem. Apesar da restrição do ambiente de reprodução, as espécies de anfíbios anuros apresentam grande diversidade morfológica, como também a maior diversidade de modos reprodutivos relatados para todos os grupos de tretápodas atuais. O Brasil é o país com maior riqueza de anfíbios anuros com, aproximadamente, 950 espécies descritas até o momento. A maioria das espécies do território brasileiro apresentam uma fase larval que, na maioria dos casos, se desenvolve no ambiente aquático e não apresenta qualquer semelhança com a sua forma adulta, seja na sua morfologia ou no nicho ecológico que ocupa. As larvas de anfíbios anuros são comumente utilizadas em estudos taxonômicos e fornecem informações importantes que auxiliam na classificação das espécies. Além disso, a identificação das espécies baseadas na forma larvária facilitam estudos de ecologia de populações e comunidades, como também, tornam mais precisos inventários faunísticos. Apesar disso, aproximadamente 50% dos girinos das espécies de anuro que ocorrem no território brasileiro não são conhecidas e existem poucos trabalhos com foco na variação dos caracteres larvais ao longo de várias populações, o que dificulta a avaliação da sua utilidade em estudos taxonômicos e pode contribuir, por exemplo, para a existência de espécies crípticas. Além disso, existem poucos trabalhos que descrevem a diversidade morfológica larval com enfoque em regiões específicas e, no Brasil, exsitem, apenas, três chaves de identificação de espécies com base nos caracteres larvais. A falta de descrições afeta diretamente trabalhos sobre anurofauna no país, e dificultam o desenvolvimento de trabalhos experimentais ou de interações ecológicas, por exemplo. Logo, descrições de girinos são necessários para tornar mais completo o conhecimento sobre a anurofauna das espécies que ocorrem no território brasileiro. Com isso, este trabalho teve como objetivo fornecer dados que complementam o conhecimento existente sobre as formas larvais no território brasileiro, com foco na anurofauna da região sudeste do Estado do Rio Grande do Norte. Neste trabalho, são descritos os girinos de cinco espécies cuja forma larval ainda não era conhecida, como também, elaboro uma chave de identificação dicotômica baseada em caracteres larvais para a região sudeste do Estado do Rio Grande do Norte e comento sobre a utilidade dos caracteres larvais para a taxonomia e sistemática dos diversos grupos de anfíbios anuros abordados neste trabalho. Além disso, uma nova espécie do gênero Pseudopaludicola é descrita e os caracteres larvais auxiliaram em sua diagnose e na diferenciação de congeneros. Os resultados gerados aqui poderão ser úteis ou auxiliar em trabalhos futuros que necessitem da identificação das formas larvais de anfíbios anuros, principalmente, no Estado do Rio Grande do Norte.

5
  • DIEGO DIAS DA SILVA
  • ENTOMOBRYOIDEA E SYMPHYPLEONA (COLLEMBOLA, HEXAPODA) EM REMANESCENTES DE MATA ATLÂNTICA DO ESTADO DO RIO GRANDE DO NORTE

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • RICARDO ANDREAZZE
  • DOUGLAS ZEPPELINI FILHO
  • Data: 27-feb-2014


  • Resumen Espectáculo
  • Colêmbolos são pequenos artrópodes extremamente abundantes na natureza. São semelhantes a insetos em seu padrão de tagmose, ecologicamente muito importantes e podem ser usados como bioindicadores. Mais de 8.300 espécies já foram descritas no mundo, mas se estima que a riqueza real corresponda a um número muito maior. A Mata Atlântica corresponde ao domínio fitogeográfico mais alterado pela ação antrópica no Brasil, restando menos de 8,5% de sua cobertura original. No Rio Grande do Norte a Mata Atlântica cobre apenas 0,27% do território do Estado. Assim, considerando a importância de se conhecer a fauna de Collembola, sobretudo num ambiente ameaçado como a Mata Atlântica, este trabalho objetivou estudar a riqueza de colêmbolos Entomobryoidea e Symphypleona ocorrentes em dois remanescentes de Mata Atlântica do Rio Grande do Norte através de coletas ativas com aspirador entomológico e passivas com pitfall, durante os períodos de chuva e seca. Foram identificadas 22 espécies de colêmbolos, sendo que destas 19 (mais de 85% do total) são novas para a ciência, incluindo um novo gênero da família Sminthuridae. As coletas realizadas no período chuvoso apresentaram praticamente o dobro de espécies em relação às realizadas no período seco. Este fato possivelmente está associado à dependência dos colêmbolos de umidade, assim como estratégias de resistência a período secos. São descritas quatro novas espécies, incluindo o novo gênero (Trogolaphysa sp.nov., Gen.nov. sp.nov., Szeptyckitheca sp.nov. e Sminthurinus sp.nov.). Este expressivo número de espécies novas identificadas, os novos registros para o gêneros e famílias para a Mata Atlântica do Rio Grande do Norte e a descoberta de um novo gênero corroboram o pressuposto que motivou este trabalho: o Rio Grande do Norte apresenta uma fauna de Collembola desconhecida e potencialmente diversificada. Além disso, foram geradas informações importantes sobre a morfologia das espécies descritas, que por sua vez são de grande importância para a sistemática dos Collembola. O novo gênero descrito faz parte de um visível subgrupo dentro da família Sminthuridae (aqueles com o unguis com cavidade) que aparentemente tem potencial para ser reconhecido futuramente em alguma categoria taxonômica supragenérica.

6
  • WALDIR MIRON BERBEL FILHO
  • Sistemática integrativa de Cichlasoma orientale Kullander 1983 e Crenicichla menezesi Ploeg 1991 (Teleostei: Cichlidae) das bacias hidrográficas do Nordeste do Brasil

  • Líder : SERGIO MAIA QUEIROZ LIMA
  • MIEMBROS DE LA BANCA :
  • SERGIO MAIA QUEIROZ LIMA
  • ADRIAN ANTONIO GARDA
  • HAYDÉE ANDRADE CUNHA
  • Data: 30-abr-2014


  • Resumen Espectáculo
  • O Nordeste brasileiro, majoritariamente imerso no bioma Caatinga, se caracteriza pelo clima semi-árido, baixa precipitação e um regime de rios intermitentes. Quanto ao conhecimento ictiofaunístico, a região é considerada uma das maiores lacunas mundiais, e uma das mais ameaçadas pelas atividades antrópicas. Além disso, a região está passando por obras de transposição, que ligará águas do rio São Francisco com quatro bacias da região: Jaguaribe, Apodi-Mossoró, Piranhas-Açu e Paraíba do Norte. Perda de diversidade, hibridização de espécies, alterações de comunidade, homogeneização de populações, alteração de qualidade e regime de fluxo de água, são impactos ambientais já atribuídos a empreendimentos similares. O presente estudo objetiva investigar a variação morfológica e molecular de Cichlasoma orientale Kullander 1983 e Crenicichla menezesi Ploeg 1991, duas espécies com ampla distribuição ao longo das bacias do Nordeste brasileiro, através de métodos de sistemática integrativa. Além disso, o estudo visa analisar a influência de fatores climáticos e geomorfológicos nesta variação, e apontar possíveis impactos da conexão artificial das bacias envolvidas na transposição do rio São Francisco. Para estes fins, foram utilizadas análises de morfometria geométrica e filogeográficas com indivíduos de três ecorregiões hidrográficas do Nordeste brasileiro. Nossos resultados mostraram que há uma significativa variação morfológica nas bacias envolvidas na transposição do rio São Francisco, que não está ligada à uma separação ancestral das bacias, evidenciando uma variação morfológica que pode representar um conjunto de respostas plásticas às constantes transformações principalmente relacionadas ao regime hídrico da região. O papel de respostas plásticas em ambientes naturalmente variáveis, assim como o potencial impacto do distúrbio no regime hídrico a ser trazido pela transposição do rio São Francisco, são discutidos. Além disso, nossos dados moleculares permitiram fornecer mais informações sobre a distribuição das espécies e sua taxonomia, incluindo a identificação de uma potencial nova espécie de Crenicichla na bacia do rio São Francisco. Os dados também mostraram alguns haplótipos compartilhados para ambas as espécies, que podem representar cenários incompletos de separação de linhagens ou fluxo gênico recente entre populações, porém forte estruturação entre a maior parte das bacias. Eventos climáticos como a regressão da Mata Atlântica durante o Pleistoceno, flutuações do nível do mar e a dispersão por paleorios na porção estuarina das bacias que desaguam no litoral norte da região nordeste, além de eventos neotectônicos envolvendo captura de cabeceiras, parecem ter contribuído para a atual distribuição de linhagens destas espécies no Nordeste brasileiro. Além disso, análises de variância molecular (AMOVA e SAMOVA) evidenciaram que a atual conjuntura das bacias se mostrou um fator importante para a variação molecular, apesar da indicação de compartilhamento recente entre algumas bacias. Diferenças de padrões de diversidade intrapopulacional entre as espécies podem estar relacionadas a múltiplos eventos históricos de colonização, ou à diferenças biológicas. O presente estudo representa o primeiro esforço de sistemática integrativa com espécies da ictiofauna continental do Nordeste brasileiro, e revelou variações morfológicas e moleculares entre drenagens isoladas que podem ser irrecuperavelmente afetadas com a conexão artificial destas bacias a partir das obras de transposição do rio São Francisco.

7
  • BEATRIZ REGINA COLOMBO
  • A FAMÍLIA BIGNONIACEAE NO ESTADO DO RIO GRANDE DO NORTE - BRASIL

  • Líder : ALICE DE MORAES CALVENTE
  • MIEMBROS DE LA BANCA :
  • ALICE DE MORAES CALVENTE
  • JOMAR GOMES JARDIM
  • RAMIRO GUSTAVO VALERA CAMACHO
  • Data: 18-jun-2014


  • Resumen Espectáculo
  • Bignoniaceae compreende 82 gêneros e cerca de 827 espécies de árvores, arbustos e lianas, encontradas em toda flora tropical mundial com menor representação em regiões temperadas. No Brasil, são encontradas 391 espécies em 32 gêneros, e a família, como um todo, foi muito explorada para diversos fins e usos, como a extração da madeira para construção, indústria farmacêutica assim como para horticultura. Sua riqueza é bastante conhecida em vários estado do país, porém poucos estudos foram realizados sobre a família na região Nordeste. Não foram encontrados estudos aprofundados sobre a ocorrência das espécies no Rio Grande do Norte, o que justifica a produção de um inventário estadual das Bignoniaceae. Para o estado identificamos 37 espécies de 17 gêneros, contrariando os dados propostos pelo site Flora do Brasil, que relacionava apenas 29 espécies distribuídas em 15 gêneros. Dentre as espécies encontradas por este estudo, 17 espécies surgem como novas ocorrências, uma vez que algumas espécies relacionadas para o estado pelo site não foram encontradas em nossas pesquisas, não sendo incluídas neste estudo. Uma chave para identificação das espécies, junto com descrições morfológicas, ilustrações e fotos das espécies são apresentadas. Os dados das espécies aqui obtidos possibilitarão diretamente o desenvolvimento de trabalhos futuros, como produção de uma chave interativa digital e o estudo da conservação das espécies de bignoniáceas do estado.

8
  • RICARDO VICTOR MACHADO DE ALMEIDA
  • Filogenia molecular das enzimas Isocitrato liase e Malato sintase e sua evolução em Viridiplantae

  • Líder : JOAO PAULO MATOS SANTOS LIMA
  • MIEMBROS DE LA BANCA :
  • JOAO PAULO MATOS SANTOS LIMA
  • DANIEL CARLOS FERREIRA LANZA
  • RODRIGO MARANGUAPE SILVA DA CUNHA
  • Data: 28-ago-2014


  • Resumen Espectáculo
  • O metabolismo vegetal é composto por uma complexa rede de eventos físicos e químicos resultantes na fotossíntese, respiração, e na síntese e degradação de compostos orgânicos. Isto só é possível graças aos diferentes tipos de respostas as inúmeras variações ambientais que um vegetal pode estar sujeito, adquiridas ao longo da evolução, levando também a conquistas de novos ambientes. O ciclo do glioxilato é uma via metabólica localizada nos glioxissomos de plantas, que possui papel único no estabelecimento das plântulas. Considerado como uma variação do ciclo do ácido cítrico esta via utiliza uma molécula de acetil-Coenzima A, oriunda da beta-oxidação de lipídios para sintetizar compostos que são utilizados na síntese de carboidratos. As enzimas Malato sintase (MLS) e Isocitrato liase (ICL) são exclusivas deste ciclo e essenciais na regulação da biossíntese de carboidratos. Devido à ausência das etapas de descarboxilação, como fatores limitantes da velocidade, estudos mais detalhados da filogenia e evolução molecular dessas proteínas permite o esclarecimento dos efeitos da presença desta rota nos processos evolutivos envolvidos na sua distribuição no genoma de espécies vegetais. Portanto, o objetivo deste estudo foi estabelecer uma relação entre a evolução molecular das enzimas características do ciclo do glioxilato (Isocitrato liase e Malato sintase) e sua filogenia molecular, entre as plantas verdes (Viridiplantae). Para isso, foram utilizadas sequências de aminoácidos e nucleotídeos dos genes, a partir de repositórios online como o Genbank e Uniprot. As sequências foram alinhadas e, em seguida, submetidos à análise estatística dos modelos de melhor ajuste de substituição. A filogenia foi reconstruída por métodos de distância (Neighbor-joining) e métodos discretos (Máxima Verossimilhança, Máxima Parcimônia e Análise Bayesiana). O reconhecimento de padrões estruturais na evolução das enzimas foi feito por predição e modelagem por homologia das estruturas das sequências das proteínas obtidas. Com base nas análises comparativas entre modelos in silico, das enzimas, e partir dos resultados de inferência filogenética, ambas as enzimas apresentam um padrão de conservação relativamente elevado em sua estrutura e geram topologias condizentes com dois processos de seleção e especialização dos seus respectivos genes. Deste modo, corroborando com a relevância em se realizar novos estudos para se elucidar o metabolismo vegetal sob uma perspectiva evolutiva das relações entre os genes e a expressão de suas enzimas.

2013
Disertaciones
1
  • PÂMELA LAVOR ROLIM
  • GENÉTICA E BIOLOGIA REPRODUTIVA DE Vriesea minarum (BROMELIACEAE): EM BUSCA DE ESTRATÉGIAS DE CONSERVAÇÃO NO QUADRILÁTERO FERRÍFERO, MINAS GERAIS

  • Líder : LEONARDO DE MELO VERSIEUX
  • MIEMBROS DE LA BANCA :
  • LEONARDO DE MELO VERSIEUX
  • FABIO DE ALMEIDA VIEIRA
  • VÂNIA CRISTINA RENNÓ AZEVEDO
  • Data: 11-mar-2013


  • Resumen Espectáculo
  • Vriesea minarum é uma espécie de bromélias rupícola, com populações naturalmente fragmentadas, restrita a região do Quadrilátero Ferrífero, em Minas Gerais, Brasil. É uma espécie ameaçada, que está sofrendo com a perda de habitat devido ao crescimento das cidades e às atividades de mineração. O conhecimento da variabilidade genética em populações de plantas é um dos principais ramos de genética da conservação, associando dados genéticos para as estratégias de conservação, enquanto que o conhecimento sobre a biologia reprodutiva pode ajudar na compreensão de aspectos fundamentais da história de vida, distribuição e estratégias de sobrevivência das plantas. Assim, o estudo da diversidade, riqueza, estrutura genética e biologia reprodutiva das populações de V. minarum podem contribuir para o desenvolvimento de ações de conservação. O capítulo 1 apresenta a transferabilidade de 14 loci de microssatélites para V. minarum. Entre os resultados desse capítulo, destaca-se o sucesso da transferabilidade de 10 loci de microssatélites descritos para outras espécies de Bromeliaceae, sendo todos eles polimórficos. No capítulo 2, é apresentada a genética de 12 populações de V. minarum que se distribuem por todo o Quadrilátero Ferrífero. Os resultados obtidos mostram pouca estruturação entre as populações (Fst = 0,088), mas com diferentes valores de riqueza (média = 2.566) e diversidade genética (média = 0.635) para todas as populações; o coeficiente de endogamia foi alto (Gis = 0.376). Estes dados podem ser resultado da ação de polinizadores e/ou dispersão de sementes eficientes, já que as populações são naturalmente fragmentadas. No capítulo 3, é estudada a biologia reprodutiva e morfologia floral de uma população de V. minarum, situada no Parque Estadual da Serra do Rola-Moça, Minas Gerais. Como resultado, foi possível identificar que a espécie possui floração de janeiro a março; com flores que duram dois dias; síndrome mista de polinização; sendo primariamente alógama, mas também tem capacidade para ser auto fecundada. Espera-se que dados obtidos nos capítulos 1, 2 e 3 sirvam como base para outros estudos com espécies de campos rupestres ferruginosos, já que até o presente momento, não é de nosso conhecimento a existência de registros de outras pesquisas feitas com espécies endêmicas do Quadrilátero Ferrífero, que busquem conciliar o entendimento da genética, com os dados da biologia reprodutiva, tendo como alvo a conservação da biodiversidade neste hábitat altamente ameaçado pela mineração. Torna-se crucial uma análise cuidadosa para a criação de novas áreas de proteção, para conservação das populações da espécie.

2
  • DÔNIS DA SILVA ALFREDO
  • FUNGOS GASTEROIDES (BASIDIOMYCOTA) NA CAATINGA: ESTUDO DE DUAS ÁREAS DE CONSERVAÇÃO NO CEARÁ E PARAÍBA, BRASIL

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • FELIPE WARTCHOW
  • VAGNER GULARTE CORTEZ
  • Data: 18-mar-2013


  • Resumen Espectáculo
  • Os fungos gasteroides constituem um agrupamento de vários clados de Basidiomycota com origens evolutivas distintas (grupo polifilético). Embora, seus táxons apresentem uma grande diversidade morfológica, por muito tempo foram agrupados como uma classe bem definida, denominada Gasteromycetes, com base nos basidiomas angiocárpico e dispersão passiva dos esporos (estatismósporos). A região Nordeste do Brasil possui áreas consideradas de extrema importância biológica com grande riqueza de espécies e sem estudos sobre fungos gasteroides. A Caatinga, que foi foco desta pesquisa, possui até então, vinte e cinco espécies registradas. Desta forma, o presente estudo teve como objetivo fazer um levantamento dos fungos gasteroides em duas áreas de brejo de altitude consideradas de extrema importância biológica: APA da Serra de Ibiapaba, no Estado do Ceará e Reserva Ecológica Estadual Mata do Pau-Ferro, no Estado da Paraíba. Excursões foram realizadas no período de abril a junho/2012 e resultaram em 103 coletas de fungos gasteroides. As análises microscópicas utilizaram microscopia eletrônica de varredura a fim de observar detalhes difíceis de serem percebidos com a microscopia óptica. Foram identificadas 17 espécies representadas pelas famílias: Clathraceae, Geastraceae, Lycoperdaceae, Phallaceae e Rhizopogonacea. O gênero com maior número de espécies coletados foi Geastrum (Geastraceae) com nove espécies, seguidas por: Morganella (Lycoperdaceae) com duas espécies. Os demais gêneros: Abrachium, Calvatia, Lycogalopsis, Mutinus e Phallus foram representados por uma espécie cada. Calvatia cava sp. nov. e Morganella nuda sp. nov. são espécies novas para a ciência. Rhizopogon luteolus e Lycogalopsis sp. são primeiros registros para região Nordeste e Caatinga. Geastrum morganii, G. pectinatum, G. rusticum e Mutinus caninus são primeiros registros para Caatinga. Para a região Nordeste houve um aumento de quatro espécies (5.7%) totalizando 74 espécies de fungos gasteroides para a região. Para a Caatinga houve um acréscimo de oito espécies (32%) totalizando 33 espécies. Com isto, as regiões de brejos de altitude em áreas de Caatinga mostraram-se propícias para estudos sobre fungos gasteroides, desta forma, novos estudos devem ser realizados em áreas de brejo de altitude a fim de melhorar o esforço amostral, ampliando o conhecimento sobre os fungos gasteroides nestas áreas.

3
  • RHUDSON HENRIQUE SANTOS FERREIRA DA CRUZ
  • O GÊNERO CYATHUS HALLER: PERS. (AGARICALES, BASIDIOMYCOTA) EM ÁREAS DE CAATINGA DO NORDESTE BRASILEIRO

  • Líder : IURI GOULART BASEIA
  • MIEMBROS DE LA BANCA :
  • IURI GOULART BASEIA
  • FELIPE WARTCHOW
  • VAGNER GULARTE CORTEZ
  • Data: 18-mar-2013


  • Resumen Espectáculo
  • Os Fungos da família Nidulariaceae, ou “fungos ninho-de-pássaro”, apresentam basidiomas
    em forma de vaso, com a superfície da parede lisa ou estriada longitudinalmente e
    estruturas internas que se assemelham a pequenos ovos de pássaros dentro de um ninho, os
    peridíolos. Dentre os cinco gêneros que compõem o grupo, o mais representativo é Cyathus
    Haller: Pers. O Nordeste Brasileiro apresenta grande importância para a diversidade
    mundial por conter um domínio fitoecológico único e exclusivamente brasileiro, a
    Caatinga, o qual carece de atenção especial quanto aos macrofungos. Apesar do
    crescimento gradual de conhecimento nos últimos anos, os estudos ainda são incipientes no
    domínio Caatinga. Entre as suas diversas formações vegetais existem os Brejos de Altitude,
    caracterizados como ilhas úmidas de vegetação perenifólia, solo de baixa fertilidade e
    precipitação anual entre 900 – 1.300 mm. Este trabalho visou levantar a riqueza taxonômica
    dos fungos nidulariáceos em áreas de Caatinga do Nordeste Brasileiro, descrevendo e
    identificando espécies, bem como ampliando a coleção do herbário UFRN – Fungos. Para
    descrição de fungos nidulariáceos seguiu-se a proposta em literaturas especializadas do
    grupo. Foram encontradas e identificadas 10 espécies do gênero Cyathus, a saber: C. earlei
    Lloyd, C. gayanus Tul. & C. Tul., C. gracilis H.J. Brodie, C. intermedius (Mont.) Tul. & C.
    Tul., C. limbatus Tul. & C. Tul., C. montagnei Tul. & C. Tul., C. pallidus Berk. & M.A.
    Curtis, C. poeppigii Tul. & C. Tul., C. striatus (Huds.) Willd. e C. tríplex Lloyd. Além
    dessas foram descritas 4 novas espécies para a ciência: Cyathus calvescens R. Cruz &
    Baseia sp. nov., C. hortum R. Cruz & Baseia sp. nov., C. magnomuralis R. Cruz & Baseia
    sp. nov. e C. parvocinereus R. Cruz & Baseia sp. nov. Duas amostras foram identificadas
    apenas a nível de gênero. Nenhum membro de Mycocalia J.T. Palmer, Nidula V.S. White,
    Nidularia Fr. e Crucibulum Tul. & C. Tul. foi encontrado, contudo os resultados foram de
    grande valia por ser um trabalho inédito na Caatinga e importante subsídio para aplicação
    de projetos de conservação e utilização sustentável do domínio.

4
  • RUY ANDERSON ARAÚJO DE LIMA
  • DINÂMICA SAZONAL DE FUNGOS MICORRÍZICOS ARBUSCULARES (GLOMEROMYCOTA) EM CERRADÃO E BREJO DE ALTITUDE NA CHAPADA DO ARARIPE, CE

  • Líder : BRUNO TOMIO GOTO
  • MIEMBROS DE LA BANCA :
  • BRUNO TOMIO GOTO
  • ALEXANDRE FADIGAS DE SOUZA
  • RICARDO LUIS LOURO BERBARA
  • Data: 19-mar-2013


  • Resumen Espectáculo
  • Os fungos micorrízicos arbusculares (FMA) são organismos simbiontes obrigatórios de raízes de vasto número de táxons vegetais, sendo encontrados em todos os ecossistemas terrestres. Estes fungos promovem maior tolerância a estresses ambientais aos vegetais associados favorecendo o estabelecimento de comunidades vegetais, especialmente quando a fertilidade do solo é fator limitante, como em áreas de Caatinga, domínio exclusivamente brasileiro que vem sendo foco de pesquisas em função da particular biodiversidade que pode proporcionar maior compreenção da história vegetacional de parte da América do Sul. Devido à importância ecológica dos FMA, ao limitado número de trabalhos e o potencial em diversidade da Caatinga, este trabalho visa inventariar a diversidade e determinar as comunidades de FMA em áreas com diferentes fisionomias ocorrentes na FLONA Araripe, Ceará (CE). A coleta das amostras ocorreu em quatro períodos, no início e final da estação seca (agosto e dezembro de 2011, respectivamente) e chuvosa (fevereiro e junho de 2012, respectivamente) em uma área de brejo de altitude e de cerradão da Chapada do Araripe, Crato, CE. Os glomerosporos foram extraídos por peneiramento úmido e centrifugação em água e sacarose (50%), montados entre lâmina e laminula utilizando PVLG e PVLG + Reagente de Melzer. No total, foram encontradas 46 espécies de FMA distribuidas em oito famílias e 16 gêneros: Acaulospora (6), Ambispora (1), Cetraspora (2), Dentiscutata (5), Fuscutata (2), Gigaspora (6), Glomus (13), Intraornatospora (1), Kuklospora (1), Orbispora (1), Paradentiscutata (1), Quatunica (1), Racocetra (1), Scutellospora (2), Septoglomus (2) e um novo gênero. Análises ecológicas mostraram que cada área de estudo apresenta dinâmicas sazonais próprias, com a área de cerradão com maior diversidade de espécies ao longo do ano, enquanto que o brejo de altitude mostrou maior variação nas espécies encontradas entre os periodos de coleta, mostrando que a vegetação e a pluviosidade tem forte influência na dinâmica sazonal dos FMA, assim como a disponibilidade de nutrientes e o pH so solo.

5
  • NERIVÂNIA NUNES GODEIRO
  • Diversidade de Seirini (Collembola, Arthropleona, Entomobryidae) em áreas úmidas da Caatinga

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • DOUGLAS ZEPPELINI FILHO
  • EDUARDO ASSIS ABRANTES
  • Data: 25-mar-2013


  • Resumen Espectáculo
  • A família Entomobryidae é uma das mais diversas famílias de Collembola do Nordeste Brasileiro. Dados sobre sua diversidade podem ser considerados subestimados devido ao baixo esforço de coleta na região. No presente estudo, foram realizadas coletas em cinco localidades do Nordeste, nunca antes amostradas, objetivando avaliar a riqueza de espécies desta família. O estudo foi feito na Serra da Jibóia, município de Santa Teresinha, Bahia; Serra das Confusões, município de Caracol, Piauí; Chapada do Araripe, munícipio do Crato, Ceará; Mata do Pau-Ferro, município de Areia, Paraíba; e Parque Nacional de Ubajara, município de Ubajara, Ceará, todas consideradas áreas úmidas da Caatinga. As coletas foram feitas utilizando-se armadilhas de queda do tipo pitfall e aspiradores entomológicos. Todo o material coletado foi triado, montado em lâminas, identificado e, por fim, foram feitas as descrições de algumas das espécies novas encontradas. Um total de 48 espécies de Entomobryidae pertencentes a nove gêneros foram registradas e 27 destas são espécies novas para a ciência, o que representa um percentual de 56,25% do total. Um novo registro de espécie para o Brasil foi identificado e novos registros para os estados foram feitos. O gênero que possuiu distribuição mais ampla foi Seira, o único encontrado em todas as áreas e o mais representativo com o maior número de espécies registradas (26). Esse resultado já era esperado, pois indivíduos do gênero Seira possuem uma boa adaptabilidade a ambientes semi-áridos, fato que já foi comprovado em pesquisas anteriores. Sete novas espécies do gênero Seira foram descritas. Uma chave dicotômica de identificação dos gêneros e espécies de Seirini com ocorrência no Brasil, foi elaborada. Este trabalho demonstrou o grande potencial de Entomobryidae e Seirini no Nordeste, visto que, apesar de ter sido realizado em áreas bem restritas, obteve resultados importantes para o conhecimento da fauna do grupo.

6
  • WALLACE MESSIAS BARBOSA SÃO MATEUS
  • Taxonomia de Papilionoideae (Leguminosae) da Mata Atlântica do Rio Grande do Norte, Brasil

  • Líder : JOMAR GOMES JARDIM
  • MIEMBROS DE LA BANCA :
  • JOMAR GOMES JARDIM
  • LEONARDO DE MELO VERSIEUX
  • MARCOS JOSÉ DA SILVA
  • Data: 25-mar-2013


  • Resumen Espectáculo
  • Leguminosae é a terceira maior família de angiospermas, apresentando cerca de 19.325 espécies e 727 gêneros e distribuição pantropical. Papilionoideae é a mais diversa das três subfamílias de leguminosas, com cerca de 13.800 espécies (71%) subordinadas a 478 gêneros e 28 tribos. É caracterizada pelo hábito herbáceo, arbustivo, lianescente ou arbóreo, folhas pinadas, trifolioladas, unifolioladas ou simples, flores frequentemente papilionadas, com as pétalas diferenciadas em estandarte, carena e alas em prefloração imbricativa descendente ou vexilar, androceu geralmente diplostêmones e sementes sem pleurograma, com hilo bem desenvolvido e embrião com radícula geralmente curvada. O presente estudo teve como objetivo realizar um estudo taxonômico das Papilionoideae ocorrentes na Mata Atlântica do Rio Grande do Norte, Brasil através do levantamento de dados de herbários, coletas de materiais em campo e análise morfológica dos espécimes coletados e/ou depositados em herbários. São apresentadas chave de identificação, descrições, caracteres diagnósticos, ilustrações e distribuição geográfica das 68 espécies e 32 gêneros distribuídos nas tribos Phaseoleae (11 gêneros/24 espécies), Dalbergieae (9/20), Swartzieae (3/3), Millettieae (2/4), Sophoreae (2/2), Abreae (1/1), Crotalarieae (1/3), Desmodieae (1/7), Indigofereae (1/3) e Sesbanieae (1/1). Os gêneros mais representativos foram Desmodium Desv. (7 espécies), Centrosema (DC.) Benth. (5), Stylosanthes Sw. (5), Aeschynomene L. (4) e Macroptilium (Benth.) Urb. (4). Quanto ao hábito, predominou o herbáceo e arbustivo com 60% (41 spp.), seguido do trepador e lianescente com 28% (19 spp.) e o arbóreo com apenas 12% (8 spp.). Neste trabalho, 32 espécies e os seguintes gêneros são registrados pela primeira vez para a flora do Rio Grande do Norte: Chaetocalyx, Cochliasanthus, Crotalaria, Galactia, Geoffroea, Macroptilium, Rhynchosia, Swartzia, Trischidium e Vigna.

7
  • AILA SOARES FERREIRA
  • VARIAÇÃO TEMPORAL E DESCRIÇÃO DE NOVAS ESPÉCIES DE COLLEMBOLA (ARTHROPODA, HEXAPODA) EM UMA ÁREA DE CAATINGA DO NORDESTE DO BRASIL

  • Líder : ALEXANDRE VASCONCELLOS
  • MIEMBROS DE LA BANCA :
  • ALEXANDRE VASCONCELLOS
  • MARCIO ZIKAN CARDOSO
  • DOUGLAS ZEPPELINI FILHO
  • Data: 25-mar-2013


  • Resumen Espectáculo
  • Collembola constitui um dos grupos mais abundantes e diversos de artrópodes terrestres, estando na base da cadeia alimentar e atuando no processo de decomposição. Possuem ampla distribuição no mundo e podem ser encontrados em praticamente todos os habitats. O conhecimento desta distinta fauna ainda é deficiente em território brasileiro, especialmente no semiárido. O objetivo desse estudo foi investigar quais as variáveis climáticas podem atuar como preditoras da riqueza de espécies, abundância de indivíduos e da estrutura composicional da taxocenose de Collembola ao longo de 12 meses em uma área semiárido dominada por vegetação de Caatinga, Nordeste brasileiro; e descrever novas espécies encontradas do gênero Seira, táxon mais diverso de Collembola no Brasil. As coletas foram realizadas em João Câmara, Rio Grande do Norte. Dez parcelas de 20 x 20 metros foram estabelecidas e os espécimes foram coletados com esforço de coleta de uma hora por pessoa utilizando um aspirador entomológico. A identificação e descrição das espécies foram realizadas através do estudo da morfologia e quetotaxia dos exemplares. Foi realizada uma análise de regressão múltipla entre a riqueza de espécies e a abundância de indivíduos com as variáveis climáticas. Foi coletado um total de 1231 indivíduos, distribuídos em 15 espécies, 12 gêneros e nove famílias. As maiores riqueza e abundância de Collembola foram encontradas durante a estação chuvosa. O gênero Seira foi o mais abundante. A precipitação explicou variação temporal da riqueza de espécies e abundância de Collembola no semiárido, o que condiz com a biologia desses animais. As populações de Collembola apresentaram distribuição agrupada. Três espécies novas de Seira foram descritas e ilustradas e todas apresentam semelhanças com espécies já registradas em território nacional.

8
  • LIUGO FERNANDO MENESES
  • DIVERSIDADE DE PARONELLIDAE (COLLEMBOLA, ARTHROPLEONA, ENTOMOBRYOIDEA) NO NORDESTE BRASILEIRO, COM ÊNFASE EM ÁREAS ÚMIDAS DA CAATINGA

  • Líder : BRUNO CAVALCANTE BELLINI
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • IURI GOULART BASEIA
  • EDUARDO ASSIS ABRANTES
  • Data: 26-mar-2013


  • Resumen Espectáculo
  • Paronellidae está entre os mais diversos e característicos componentes da fauna epiedáfica de colêmbolos em países tropicais. No entanto, apenas 15 espécies da família foram registradas no Brasil, sendo apenas duas para a Região Nordeste do país. Este dado claramente está relacionado a um baixo esforço amostral e ausência de especialistas na área. Assim, este trabalho objetivou estudar a fauna de Paronellidae, do ponto de vista taxonômico, em seis ambientes distintos na Região Nordeste do Brasil (nos Estados de Alagoas, Bahia, Ceará, Paraíba e Piauí), sendo cinco áreas de Caatinga e uma de Mata Atlântica. Foram realizadas coletas ativas durante a estação chuvosa em cada área. Os espécimes coletados foram triados com ajuda de lupa e montados em lâminas para microscopia. Os espécimes identificados como representantes da família Paronellidae tiveram sua ocorrência registrada, assim com foi feita a descrição de cinco novas espécies para a ciência. Também foi elaborada de uma chave de identificação para os gêneros da família que ocorrem no Brasil. Doze registros de espécies de paronelídeos foram feitos para o Brasil: Campylothorax mitrai; Lepidonella. sp. nov. 1; Lepidonella sp. nov. 2; Lepidonella sp. nov. 3; Lepidonella sp. nov. 4; Lepidonella sp. nov. 5; Dicranocentruga sp. nov. 1; Dicranocentruga sp. nov 2; Dicranocentruga sp. nov 3; Paronella sp. nov; Serroderus sp. nov e Trogolaphysa sp. nov. 1, onde C. mitrai, Lepidonella. sp. nov. 1, Dicranocentruga sp. nov. 1, Dicranocentruga sp. nov. 2 e Dicranocentruga sp. nov. 3 foram descritas. Os registros dos gêneros Serroderus e Dicranocentruga foram os primeiros destes gêneros para o Brasil. A descrição de Lepidonella sp. nov. 1 também corresponde à primeira descrição de uma espécie do gênero para o país. Os dados apresentados mostram uma elevada riqueza potencial de espécies de Paronellidae, não apenas na Região Nordeste, mas como no Brasil. De fato, com os registros apresentados neste trabalho, o número de registros de espécies de Paronellidae no país aumentou em 80%. Políticas de conservação ambiental podem ser direcionadas através do estudo desta fauna, especialmente em áreas de Caatinga.

9
  • MARCELO DA SILVA
  • Taxonomia e Biogeografia da espécie politípica Herpsilochmus rufimarginatus (Temminck, 1822) (Aves: Thamnophilidae)

  • Líder : MAURO PICHORIM
  • MIEMBROS DE LA BANCA :
  • MAURO PICHORIM
  • SERGIO MAIA QUEIROZ LIMA
  • MARCOS RICARDO BORNSCHEIN
  • Data: 28-jun-2013


  • Resumen Espectáculo
  • O gênero Herpsilochmus é composto principalmente por espécies crípticas, entre elas está Herpsilochmus rufimarginatus, que atualmente é representado por quatro subespécies: H. r.
    rufimarginatus, H. r. frater, H. r. scapularis e H. r. exiguus. Diferenças na plumagem e vocalização sugerem que existam mais de uma espécie envolvida nesse complexo. Sendo assim esse e outros táxons subespecíficos precisa de revisão urgente, a distribuição disjunta dessa espécie também possibilita inferir a relação entre essas aves que ocorrem em biomas e/ou centros de endemismos diferentes. Esse estudo tem como objetivo fazer a revisão taxonômica dos táxons hora incluídos no complexo Herpsilochmus rufimarginatus com base em caracteres morfológicos, morfométricos, vocais e distribuição geográfica dessa ave. Além criar modelos de distribuição potencial atual e fazer a reconstrução da distribuição pretérita usando modelagem de nicho ecológico, e testar o conservadorismo e divergência de nicho entre as diferentes subespécies. Foram realizadas consultas para exame das peles dos espécimes presentes nos museus: Museu de Zoologia da Universidade de São Paulo (MZUSP), Museu Nacional (MN) e Museu Paraense Emilio Goeldi (MPEG), e as peles depositadas na Coleção de Ornitológica da Universidade Federal do Rio Grande do Norte (COUFRN). Foram verificadas as seguintes medidas de comprimento dos espécimes: culmen exposto, culmen total e culmen narina, tarso, asa achatada e cauda. A análise vocal foi realizada com vocalizações de bancos digitais e/ou de bancos pessoas, onde foram mensurados 17 parâmetros vocais. Essas informações e mais as disponíveis em literatura serviram para montar um bando de dados sob o limite de distribuição dos táxons e gerar os modelos de nicho ecológico. As análises realizadas no programa Maxent, tendo como critério de seleção de modelo os valores de AUC, sendo os modelos que tiveram valores maiores que 0,80 são considerados bons modelos. Os dados ambientais para realização da modelagem foram baixados no site do WorldClim. As informações morfométricas, vocais e distribuição geográfica apontam para a para a separação desses táxons seja levando em consideração análises multivariadas e uni variadas. Os modelos de distribuição potencial tiveram bom desempenho (AUC > 0,80), sendo a sua distribuição associada a características ambientais da floresta Amazônica e Mata Atlântica (florestas do sul e sudeste, e floresta do nordeste). A reconstrução da distribuição aponta um possível contato entre a parte sul da Mata Atlântica com a parte norte da Amazônica. A análise de sobreposição de nicho apontou uma baixa sobreposição entre os táxons e as comparações entre modelo nulo e os gerados de sobreposição apontam provavelmente que ocorre conservadorismo de nicho. As informações sugerem que os táxons que ocorrem na Amazônia e Mata Atlântica representam três espécies distintas, sendo uma delas uma espécie não descrita.

10
  • ISABEL MEDEIROS DOS SANTOS ROCHA
  • COLÊMBOLOS (ARTHROPODA: HEXAPODA: COLLEMBOLA) NUMA ÁREA DE CAATINGA DO NORDESTE BRASILEIRO

  • Líder : ALEXANDRE VASCONCELLOS
  • MIEMBROS DE LA BANCA :
  • BRUNO CAVALCANTE BELLINI
  • MAURO PICHORIM
  • EDUARDO ASSIS ABRANTES
  • Data: 30-ago-2013


  • Resumen Espectáculo
  • Os ecossistemas edáficos são base para toda produção de recursos biológicos terrestres e sua dinâmica afeta não apenas os ambientes naturais, mas também a sociedade e suas atividades econômicas. Na Caatinga, o clima semiárido associado ao uso inadequado do solo têm potencializado a degradação e a perda do potencial produtivo das terras. Considerando que a fauna edáfica, incluindo os colêmbolos, é um importante indicador da qualidade do solo, este trabalho objetivou avaliar a fauna de Collembola numa área de Caatinga do Rio Grande do Norte, verificando a influência de fatores bióticos e abióticos, tais como características do solo, da vegetação e do clima, sobre a estrutura da taxocenose. As variáveis ambientais utilizadas foram: granulometria (representada pela proporção de areia), quantidade de matéria orgânica e pH do solo; riqueza, densidade e biomassa aérea vegetal; e necromassa. Foram utilizadas armadilhas de queda (pitfall) para coletar espécimes da fauna epiedáfica de Collembola em 30 pontos localizados na Fazenda Cauaçu, João Câmara, RN, nos meses de julho (período chuvoso) e novembro (período seco) de 2011. Foram coletados 5.513 indivíduos de 15 espécies, distribuídas em 13 gêneros e 9 famílias de Collembola. Cinco das espécies registradas são novas para a ciência, confirmando a expectativa de alto grau de endemismo para o bioma, e a maior abundância de indivíduos foi registrada na estação chuvosa, o que sugere sensibilidade dos colêmbolos à baixa umidade. Quatro espécies foram mais abundantes na estação seca, todas da Ordem Entomobryomorpha, e os resultados das análises estatísticas sugerem que a riqueza de plantas, a biomassa vegetal aérea, a proporção de areia no solo, o pH e a umidade devida às chuvas sejam os principais influenciadores da abundância de Collembola na região estudada.

11
  • RAISSA ELIZABETH DE CASTRO MAGALHAES
  • Biossistemática do complexo Cryptanthus zonatus (Vis.) Beer

  • Líder : ALICE DE MORAES CALVENTE
  • MIEMBROS DE LA BANCA :
  • ALICE DE MORAES CALVENTE
  • FABIO DE ALMEIDA VIEIRA
  • LEANDRO DE OLIVEIRA FURTADO DE SOUSA
  • Data: 18-dic-2013


  • Resumen Espectáculo
  • A delimitação taxonômica ao nível de espécie em plantas não é uma tarefa fácil, devido ao grande polimorfismo dos vegetais. No presente trabalho objetivamos avaliar três morfotipos (formas) de Cryptanthus zonatus (Vis.) Beer (Bromeliaceae, Bromelioideae) descritos na literatura, lançando mão da biologia floral e fenologia, além da morfologia floral e anatomia foliar. As áreas de realização do estudo foram o Parque Estadual das Dunas de Natal e a Reserva Particular do Patrimônio Natural da Mata Estrela, no município de Baía Formosa Rio Grande do Norte (RN). Para o estudo fenológico foram feitas visitas mensais durante o período de um ano, onde foram feitas observações acerca das fenofases de floração e frutificação das populações das três formas de C. zonatus. Para biologia floral, procurou-se avaliar dados como: tipo de visitante floral, volume e concentração de néctar e horário de abertura e fechamento das flores. Flores das três formas foram coletadas em campo, analisadas ao estereomicroscópio e as medidas das peças foram feitas com a ajuda de um paquímetro. Cortes transversais e paradermais de folhas das três formas foram feitos, corados e posteriormente analisados ao microscópio ótico. Observações de cortes paradermais em microscópio eletrônico de varredura também foram feitas. Todos os dados mostraram não haver diferenças significativas entre as três formas. Desse modo, conclui-se que não há subsídios para o reconhecimento dos três morfotipos de C. zonatus como entidades taxonômicas, e que as ferramentas de fenologia, anatomia, biologia floral e morfologia floral não foram conclusivas para delimitar esses três morfotipos. Ainda visando caracterizar melhor a Flora de Bromeliaceae do RN, foi também estudada a anatomia foliar de Orthophytum disjunctum, uma espécie de um gênero irmão de Cryptanthus, apenas recentemente documentada no semiárido do RN. A comparação anatômica entre Cryptanthus e Orthophytum permitiu a separação dos gêneros com base na disposição dos estômatos e maior espessura do parênquima aquífero. Durante os trabalhos de campo, foi possível, ainda, documentar a primeira ocorrência de Aechmea muricata no RN, na RPPN Mata Estrela, auxiliando no entendimento da distribuição do táxon, que encontra-se ameaçado de extinção.

SIGAA | Superintendência de Tecnologia da Informação - (84) 3342 2210 | Copyright © 2006-2024 - UFRN - sigaa09-producao.info.ufrn.br.sigaa09-producao