Dinâmica populacional de quatro espécies de grandes bagres na bacia do rio Cuiabá, Pantanal norte, Brasil (Siluriformes, Pimelodidae)

FapUNIFESP (SciELO) - Tập 24 Số 1 - Trang 87-98 - 2007
Lucia a F Mateus1, Jerry Penha1
1Universidade Federal de Mato Grosso, Brasil

Tóm tắt

A estrutura em comprimento dos estoques de quatro espécies de grandes bagres pimelodídeos foi utilizada para se estudar a dinâmica de suas populações na bacia do rio Cuiabá, Pantanal norte. Foram estimados os parâmetros de crescimento, recrutamento e mortalidade para as espécies. Das espécies estudadas o Barbado apresentou o crescimento mais rápido que as demais, que exibiram taxas de crescimento similares. Para o Barbado e o Pintado foram encontrados dois picos anuais de recrutamento, já o Cachara e o Jaú apresentaram um único pico anual. A análise da mortalidade indica que a pesca é uma fonte de mortalidade muito mais importante para o Barbado que para as demais espécies.

Từ khóa


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