Trophic ecology of Brazilian flathead, Percophis brasiliensis (Quoy and Gaimard, 1825), in the Argentine-Uruguayan Coastal Ecosystem (34° S-41° S)
Keywords:Dieta, trophic level, coastal fishing, Percophis brasiliensis
A total of 1,255 stomachs of Brazilian flathead, Percophis brasiliensis, caught on commercial fleet vessels in the Argentine-Uruguayan Coastal Ecosystem between November 2008 and December 2009 was analyzed. 657 (52.4%) had content and 598 (47.6%) were empty. According to the Index of Relative Importance the species consumed, mainly, bony fishes (98.56%) followed by molluscs (1.37%) and crustaceans (0.05%). The most important preys were Trachurus lathami, (64.63%), Engraulis anchoita (27.37%) and squid Loligo sanpaulensis (1.36%). The increase of preys size was proportional to the predator length growth. The 4.25 trophic level value positions Percophis brasiliensis as a tertiary piscivorous consumer.
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Copyright (c) 2012 Andrés Milessi, Noemí Marí
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