Growth and reproduction of the shrimp Rimapenaeus constrictus (Decapoda: Penaeidae) from the southeastern coast of Brazil

Autor(es)

Garcia, Joyce Rocha ^[1] ; Wolf, Milena Regina ^[1] ; da Costa, Rogerio Caetano ^[2] ; Castilho, Antonio Leao ^[1]

Afiliação do(s) autor(es)

^[1] UNESP, Study Grp Crustacean Biol Ecol & Culture NEBECC, Zool Dept, Biosci Inst, BR-18618000 Botucatu, SP - Brazil

^[2] UNESP, Lab Biol Marine & Freshwater Shrimps LABCAM, Biol Sci Dept, Fac Sci, BR-17033360 Bauru - Brazil

• Tipo de documento: Artigo Científico
• Fonte: REGIONAL STUDIES IN MARINE SCIENCE; v. 6, p. 1-9, JUL 2016.
• Citações Web of Science: 6

Resumo

Few studies have been performed on the shrimp Rimapenaeus constrictus, despite its wide geographic distribution in the western Atlantic Ocean. The population dynamics of R. constrictus were evaluated, focusing on sex ratios, growth, longevity, and reproduction, in the Cananeia region, along the southern coast of Sao Paulo state, Brazil. Monthly trawls were conducted from July 2012 through May 2014 using a shrimp boat outfitted with double-rig nets. The shrimp were identified according to their sex and reproductive condition, and carapace length (CL) was measured. A total of 1702 individuals were collected, and females were found to reach sexual maturity at a greater CL (9 mm) than males (7 mm). Based on the estimated growth curve parameters, males exhibit shorter longevity (0.73 years) than females (1.14 years). In terms of the sex ratio, there was a statistically significant bias toward females observed over the months, beginning at a CL of 9 mm (binomial test, p < 0.05). The seasonal reproductive pattern recorded during the spring and summer coincided with higher temperatures and chlorophyll concentrations (plankton production), which suggests that food availability for protozoeal and mysis larvae may be an important selective factor in the reproductive success of R. constrictus. (C) 2016 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 07/56733-5 - Abundancia, distribuicao e dinamica populacional dos camaroes penaeoidea (crustacea: decapoda) no litoral do estado de sao paulo.
• Beneficiário: Antonio Leão Castilho
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/14174-0 - Biologia populacional do camarão-ferrinho Rimapenaeus constrictus (Stimpson,1874)(Decapoda:Penaeoidea)na região de Cananéia, litoral sul do estado de São Paulo.
• Beneficiário: Joyce Rocha Garcia
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• 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
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático