Fisheries stock assessment of four large catfish (Siluriformes, Pimelodidae) in the Cuiaba River basin, north Pantanal, Brazil, using some Biological Reference Points

The growth and mortality parameters estimated from length structure were used to evaluate the state of explotation of the stocks of four large catfish species from Cuiaba River basin, north Pantanal. The species studied were the Flatwhiskered catfish, the Jau, the Barred sorubim, and the Spotted sor...

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Bibliographic Details
Published in:Revista brasileira de zoologia 2007-03, Vol.24 (1), p.144-150
Main Authors: Mateus, Lucia AF, Penha, Jerry MF
Format: Article
Language:eng ; por
Subjects:
Freshwater
Pimelodidae
Siluriformes
Sorubim
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Summary:The growth and mortality parameters estimated from length structure were used to evaluate the state of explotation of the stocks of four large catfish species from Cuiaba River basin, north Pantanal. The species studied were the Flatwhiskered catfish, the Jau, the Barred sorubim, and the Spotted sorubim. The assessment were conducted with the yield per recruit model, and the Biological Reference Points F sub(max), F sub(0.1), F = M, and F sub(BDR). The analysis indicates that the stocks of the Spotted sorubim, and of the Jau are not overexploited. However, the stocks of the Barred sorubim, and, in lower degree, of the Flatwhiskered catfish of the Cuiaba River basin are in imminent threat of overfishing.
ISSN:0101-8175
DOI:10.1590/S0101-81752007000100017