Population dynamics of the crab Hepatus pudibundus (Herbst, 1785) (Decapoda, Aethridae) on the southern coast of SAo Paulo state, Brazil

Autor(es)

Miazaki, Lizandra Fernandes ^[1] ; Simoes, Sabrina Morilhas ^[1] ; Castilho, Antonio Leao ^[2] ; Costa, Rogerio Caetano ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, UNESP, Fac Sci, Dept Biol Sci, Lab Biol Marine & Freshwater Shrimp, Av Eng Luiz Edmundo Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil

^[2] UNESP, Biosci Inst, Zool Dept, Study Grp Crustacean Biol Ecol & Culture NEBECC, BR-18618000 Botucatu, SP - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: Journal of the Marine Biological Association of the United Kingdom; v. 99, n. 4, p. 867-878, JUN 2019.
• Citações Web of Science: 1

Resumo

The present study investigated the population dynamics of Hepatus pudibundus in the Cananeia region, in southern SAo Paulo state, Brazil, focusing on population structure, growth parameters, longevity, sex ratio, reproduction and recruitment juvenile period. Sampling was performed monthly at seven stations from July 2012 to June 2014, using a shrimp fishing boat. A total of 1650 specimens were collected: 551 males and 1099 females. The males were larger than females. Reproductive females were captured throughout the study period and juveniles were captured in most months. Both of these demographic categories were positively correlated with temperature. Growth parameters showed differences between sexes: CW infinity = 78.91 mm, k = 0.0066 day(-1), t(0) = 0.0965 for males and CW infinity = 69.71 mm, k = 0.0053 day(-1), t(0) = -0.2404 for females. Longevity was estimated at 1.91 and 2.40 years for males and females, respectively. The findings provide a greater understanding of the life cycle in this species. Additionally, since trawl nets are not selective, this study also provides information for better trawl fishery management, addressing not only the target shrimp but also the by-catch species. (AU)

• Processo FAPESP: 15/20382-0 - Dinâmica populacional do caranguejo Hepatus pudibundus (Herbst, 1785) (Crustacea, Decapoda: Aethridae) na região de Cananéia, extremo Sul do Estado de São Paulo
• Beneficiário: Lizandra Fernandes Miazaki
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 14/01632-3 - Status taxonômico de Acetes americanus no Atlântico Ocidental: Acetes americanus americanus e Acetes americanus carolinae são a mesma espécie?
• Beneficiário: Sabrina Morilhas Simões
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 10/50188-8 - Crustáceos decápodes: multidisciplinaridade na caracterização da biodiversidade marinha do estado de São Paulo (taxonomia, espermiotaxonomia, biologia molecular e dinâmica populacional) (Biodiversidade Marinha)
• Beneficiário: Fernando Luis Medina Mantelatto
• Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático