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Revista de biología marina y oceanografía

On-line version ISSN 0718-1957


GONGORA, María E; BOVCON, Nelson D  and  COCHIA, Pablo D. Fish bycatch in the Patagonian shrimp fishery Pleoticus muelleri Bate, 1888. Rev. biol. mar. oceanogr. [online]. 2009, vol.44, n.3, pp.583-593. ISSN 0718-1957.

The catch of non-target animal species, known as bycatch, and their discard are main problems in fisheries management. The prawn or shrimp trawl fisheries in particular are recognized for their incidence in the global discards. In Argentine Patagonia there is an industrial shrimp fishery based on the species Pleoticus muelleri, of high commercial value. Since 2001 an on-board observer program collects information about all species caught. We analyzed the composition of the bycatch of fishes in the Patagonian shrimp fishery and the frequency of species occurrence. The data analyzed correspond to the outrigger freezing fleet, which catches more than 75% of the total shrimp landings in Argentina. We identified 67 species of osteichthyes, chondrichthyes and myxini, corresponding to 42 families. The families with the larger number of species were Rajidae (9), Clupeidae (3), Ophidiidae (3), Zoarcidae (3), Nototheniidae (3) y Paralichthyidae (3). Of the 67 species reported as bycatch, seven had not been reported before in the San Jorge gulf and adjacent waters: Atlantoraja cyclophora, Brevoortia aurea, Diplodus argenteus, Pagrus pagrus, Micropogonias furnieri, Sarda sarda and Paralichthys patagonicus.

Keywords : Solenoceridae; non-target species; San Jorge Gulf; ecosystem-based management; Argentina.

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