Artigo Produção Nacional Revisado por pares

SELETIVIDADE EM REDES DE EMALHAR UTILIZADAS NA PESCA DE ACARÁ ( Geophagus brasiliensis. QUOY & GAIMARD,1824 (OSTEICHTHYES, CICHLIDAE ) E ÉPOCA DE SUA REPRODUÇÃO NA REPRESA DE PONTE NOVA, RIO TIETÊ, ESTADO DE SÃO PAULO, BRASIL

2018; INSTITUTO DE PESCA - APTA - SEC. DE AGR. E ABAST. - SP; Volume: 10; Linguagem: Inglês

ISSN

1678-2305

Autores

Arlete Mota, Elmar Cardozo Campos, Jair Duarte Rodrigues,

Tópico(s)

Aquaculture Nutrition and Growth

Resumo

The selectivity curve of gill-nets utilized in the catching of the fresh water fish “acara”, Geophagus brasiliensis, was determined according to Gulland (1969). The observed results are: c*(L)= e-0.3104(L – 1.3283 m)2 Where: c*(L)= relative frequency of retention L = total length of the fish m = perimeter of the mesh. The relationships between total lengths (and body weights) and the internal perimeter of meshes the annual reproductive period (Spring) were also determined.

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