Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Models of sexual maturation as a tool for the conservation of commercial fish in a RAMSAR site of Brazil

2018; American Institute of Physics; Volume: 2040; Linguagem: Inglês

10.1063/1.5079159

1935-0465

Zafira da Silva de Almeida, Irayana Fernanda da Silva Carvalho, Ana Luiza Caldas Diniz, Raimunda Nonata Fortes Carvalho Neta, Cláudio Torres, Ilka Márcia Ribeiro de Souza Serra,

Fish biology, ecology, and behavior

The determination of the average lengths of first sexual maturation of fish is important as a tool to infer planning actions for fishery management. In this study we aimed to estimate the average length of the first gonadal maturation (L50) of three fish species (Plagioscion squamosissimus, Hassar affinis and Pygocentrus nattereri) to monitor the fishery in two lakes of a Ramsar Site in Brazil. The following L50 values were obtained for Viana lake: H.affinis, 10.6 cm; P.squamosissimus, 15.3 cm; P. nattereri, 12.0 cm. In the Aquiri lake, the following values of L50 were found: H.affinis, 11.5 cm; P.squamosissimus, 18.9 cm e; P. nattereri, 12.4 cm. The results found in this study suggest that in Lake Viana the species are maturing more precociously due to the environmental and anthropic pressures.