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Veuillez utiliser cette adresse pour citer ce document : http://hdl.handle.net/1834/1963

Titre: Ecología trófica de peces demersales en el Golfo San Jorge
Autre(s) titre(s): Trophic ecology of demersal fish from San Jorge Gulf
Auteur(s): Sánchez, M.F.
Prenski, L.B.
mot-clé ASFA: Marine fish
Trophic relationships
Date de publication: 1996
Editeur: Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
Référence bibliographique: Revista de Investigación y Desarrollo Pesquero, 10. p. 57-71
Résumé: This work is a first approach in the study of the trophic ecology from a multispecific fishery in San Jorge Gulf (45°-47°S), Argentina. Stomach contents from 28 demersal fish species were analyzed. Taxonomic and trophic spectrum were obtained. Using weight percentage of each prey, trophic spectrum variations for size classes were analized for each of the 12 considered "dominant" species. Overlaping in the diet among these predators was estimate using cluster analysis. There was an interespecific diet overlap between juveniles belonging to demersal-benthic fish species, because all of them prey upon Stomatopoda and Munida. Adults from those species and hake prefered young and adult hake as preys, while Macruronus magellanicus and juvelines Merluccius hubbsi ate mainly zooplankton. In addition, there were son seasonal changes in prey species preferences, but food habits changed considerably with fish size.
URI/URL: http://hdl.handle.net/1834/1963
ISSN: 0325-6375
Collection(s) :1. Revista de Investigación y Desarrollo Pesquero

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