Seletividade de redes de emalhar para captura de Selene peruviana e Peprilus medius no Pacífico Equatoriano
DOI:
https://doi.org/10.15359/revmar.16-2.1Palavras-chave:
Carangidae , Stromateidae, pesca artesanal, seletividade, Pacífico EquatorianoResumo
No Pacífico equatoriano, Selene peruviana e Peprilus medius são espécies alvo da pesca artesanal capturadas com redes de emalhar e constituem um importante recurso pesqueiro para consumo local, pois são espécies altamente valorizadas por seu baixo custo e por sua contribuição proteica de alto valor biológico. Porém, não existem estudos que determinem a seletividade na captura dessas espécies. O presente estudo avalia a seletividade de redes de emalhar de superfície monofilamentares com malhas de 3" (7.62cm) e 3 ½" (8.89cm), utilizadas principalmente por pescadores artesanais. Os dados provêm de diversas operações de pesca na zona costeira de 8 milhas náuticas (M) em Manabí, Equador, durante 2017, entre 18h e 6h. Os parâmetros e curvas de seletividade foram avaliados por análise multimodelo pelo método SELEC. O modelo log-normal apresentou melhor ajuste com comprimentos modais de 24.23 e 21.96 cm para S. peruviana e P. medius, respectivamente, e fatores de seleção de 3.23 e 3.11. As malhas ideais calculadas foram de 7.20 e 6.91 cm, respectivamente, que são menores do que as utilizadas pela maioria dos pescadores artesanais locais. Portanto, pode-se inferir que a distribuição de tamanho das espécies capturadas segue uma distribuição log-normal, sugerindo que as redes de emalhar têm maior probabilidade de capturar peixes maiores.
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