Banca de QUALIFICAÇÃO: MARCELO MOREIRA DE CARVALHO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : MARCELO MOREIRA DE CARVALHO
DATA : 23/02/2018
HORA: 14:30
LOCAL: Anfiteatro das Aves, Centro de Biociências, UFRN
TÍTULO:

Sharks captured by small-scale fisheries in the Northeastern coast of Brazil: Ethnotaxonomy and molecular identification

PALAVRAS-CHAVES:

bycatch fauna, popular identification, coastal fishery resources.

PÁGINAS: 47
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

Background: Fishermen’s ethnotaxonomy knowledge from small-scale fisheries constitutes an important approach to understanding fisheries dynamic and diversity of shark species exploited in coastal zones. This study aimed to investigate fishing and ethnotaxonomy of the main shark species caught by small-scale fisheries in the coastal waters of Northeastern of Brazil.

Methods: Semi-structured and structured interviews were conducted with fishermen approaching general aspects of fishing activities and specific questions regarding ethnotaxonomy, capture and commercialization of sharks. The data were quantitative and qualitative analyzed for fisheries characterization; and species identification, nominative criteria and classification analyzed under an ethnobiological systematic perspective. It was performed non-parametric statistical tests in order to verify association between species captured, fishing gears and the period of capture.

Results: It was registered 73 binomials nomenclature, 11 main ethnospecies and 6 synonymies. It was verified some species from the same scientific genera are often named and grouped by the same ethnoname, with no distinction between species by fishermen. Sharks landings as bycatch correspond to less than 5% of the total commercial fisheries in the region, with socioeconomic value by local commercialization. The most frequent shark captures were associated to handline and surface longlines during the rainy season; whilst gillnet was associated to the dry season. Based on the main ethnospecies cited by fishermen, at least three species are classified currently as vulnerable and endangered in nature.  

Conclusions: Even though shark capture occurs at lower proportion compared to target commercial fisheries, studies related to species identification and monitoring fishing landings aided by fishermen may contribute generating subsidies to the development of conservation and management plans for these fisheries resources.

MEMBROS DA BANCA:
Interno - 2380571 - CIBELE SOARES PONTES
Interno - 1219932 - FRANCISCA DE SOUZA MILLER
Externo à Instituição - JOSE GARCIA JUNIOR - IFRN