masterThesis
Tubarões capturados em pescarias de pequena escala do Estado do Rio Grande do Norte: abordagens etnotaxonômica e reprodutiva com vistas à gestão e conservação
Fecha
2018-08-30Registro en:
CARVALHO, Marcelo Moreira de. Tubarões capturados em pescarias de pequena escala do Estado do Rio Grande do Norte: abordagens etnotaxonômica e reprodutiva com vistas à gestão e conservação. 2018. 66f. Dissertação (Mestrado em Desenvolvimento e Meio Ambiente) - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, 2018.
Autor
Carvalho, Marcelo Moreira de
Resumen
Sharks are important regulators of fish and invertebrate populations in aquatic ecosystems. At
small-scale fisheries, these animals are translated as socioeconomic resources, generating
income on coastal communities. The inshore-dependent life cycle species Rhizoprionodon
porosus (Poey, 1861) is one of the most frequent on landings, therefore liable to overfishing.
Despite ecological and socioeconomic importance, alternatives providing fundamental
information on monitoring and assessment of population stocks are limited, compromising the
development of management and conservation plans. Thus, this study aimed to identify sharks
species captured by small-scale fisheries from the state of Rio Grande do Norte, Northeastern
Brazil, by using ethnotaxonomic approach; and also present reproductive aspects of
Rhizoprionodon porosus. Data were obtained from literature review, semi-structured
interviews with local fishers and specimens sampling from fishery landings along the coast of
the State. Fishers identified 23 shark ethnospecies and among them, there are species under
risk of extinction at national and global scale. Specimens of R. porosus were mainly neonate
individuals with body size lower than the calculated for the first sexual maturity. In general,
fisheries operate within nursery zones for the species. This study has contributed by providing
database regarding ethnotaxonomic identification of shark species and reproductive aspects of
one commercial species frequently captured in coastal fisheries.