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Composicion de la fauna incidental en la capturas de la pesca de langosta (Panulirus spp.) en el sureste del golfo de California, Mexico



Composicion de la fauna incidental en la capturas de la pesca de langosta (Panulirus spp.) en el sureste del golfo de California, Mexico



Revista de Investigaciones: 209-218



By-catch data obtained in lobster fisheries of Panulirus inflatus and P. gracilis in the southeastern Gulf of California in 1991 are analyzed. Lobsters were caught with bottom set-nets (chinchorros). By-catch includes fishes, others crustaceans and molluscs. Fishes were always more abundant except in fall. Total catch was of 435.38 kg; lobster amounted for 31.6% and by-catch for 68.4%. By-catch was made of (by weight) 81.2% of fishes, 12.7% of others crustaceans and 6.1% of molluscs. The highest catch (257.25 kg) was obtained in the winter, with 38.7% corresponding to lobster and 61.3% to by-catch (fishes, 89.9%; others crustaceans, 5.2%; and molluscs, 4.9%). The lower catch was obtained in fall (17.23 kg): lobsters, 41.3%; by-catch, 58.7% (fishes, 35.6%; others crustaceans, 51.3%; molluscs, 13.1%. The higher catch coincided with the lower mean surface (19.7[degree]C) and bottom (18.4[degree]C) water temperature. The lower catch was obtained when the mean water temperature were higher (surface, 29.8[degree]C; bottom, 29.3[degree]C).

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