Banca de DEFESA: TIEGO LUIZ DE ARAUJO COSTA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : TIEGO LUIZ DE ARAUJO COSTA
DATA : 27/06/2016
HORA: 13:30
LOCAL: Sala Didático I do Departamento de Ecologia da UFRN
TÍTULO:

Fire Ray II Project: Ecology and phytogeography of Dasyatis marianae Gomes, Rosa & Gadig 2000


PALAVRAS-CHAVES:

streak; modeling; morphometry; genetics; diet; differences.


PÁGINAS: 120
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

A large number of sharks and rays inhabit tropical coastal areas. Unlike pelagic environments in the open sea, coastal areas are more subject to variations, both by human actions such as the continental, geographic or climatic influence resulting in a wide variety of habitats. Some species may have close relationship with certain habitats as to be possible to distinguish specific standards for different locations. Dasyatis marianae is an endemic streak of northeastern Brazil, occurring from Maranhão to the south of Bahia, exclusively on the continental shelf. With a restricted distribution, this streak showed estenotópica, with low amplitude tolerance to environmental conditions, especially temperature, salinity and depth. As a result, D. marianae presented morphological, ecological and molecular differences intraspecific over their geographical distribution. The more lanes south of the distribution are larger and have a distinct morphometric standard against the rays of the northernmost locations. Also, they have a lower genetic diversity and a greater preference for crustaceans in their diet. In general, D. marianae is divided into two populations genetically structures, a large population connecting the extremes of the distribution and a more restricted population located in Salvador. local environmental characteristics insulate this population, even without a physical barrier easy to identify. The pattern of population structure of D. marianae suggests an isolation by environment (IBE) where the interaction between the species and the habitat structure their spatial variation, regardless of distance. This work, based on an integrative approach (morphology, feeding niche modeling and phylogeographical) certainly generates grants for management actions and conservation of this species, according to Ordinance No. 43/2014 MMA, is a priority for research on your conservation state.


MEMBROS DA BANCA:
Externo à Instituição - HUGO BORNATOWSKI - NENHUMA
Presidente - 1378974 - LIANA DE FIGUEIREDO MENDES
Externo à Instituição - MARIA LÚCIA GÓES DE ARAÚJO - UFRPE
Externo à Instituição - RICARDO DE SOUZA ROSA - UFPB
Externo à Instituição - RODRIGO AUGUSTO TORRES - UFPE
Notícia cadastrada em: 16/06/2016 17:10
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