Trophic ecology of Brazilian flathead, Percophis brasiliensis (Quoy and Gaimard, 1825), in the Argentine-Uruguayan Coastal Ecosystem (34° S-41° S)

Authors

  • Andrés Milessi Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC)
  • Noemí Marí Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)

Keywords:

Dieta, trophic level, coastal fishing, Percophis brasiliensis

Abstract

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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Published

2012-12-31

How to Cite

1.
Milessi A, Marí N. Trophic ecology of Brazilian flathead, Percophis brasiliensis (Quoy and Gaimard, 1825), in the Argentine-Uruguayan Coastal Ecosystem (34° S-41° S). Mar Fish Sci [Internet]. 2012Dec.31 [cited 2021Feb.25];21:61-72. Available from: https://ojs.inidep.edu.ar/index.php/mafis/article/view/112