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Ecología trófica del pez palo, Percophis brasiliensis (Quoy y Gaimard, 1825) en el ecosistema costero argentino-uruguayo (34º' S-41º' S) OceanDocs
Milessi, A.C.; Marí, N.R..
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.
Tipo: Journal Contribution Palavras-chave: Stomach content Predation Trophic levels Coastal fisheries Percophis brasiliensis PSW; Argentina; Buenos Aires ASW; Uruguay marine environment.
Ano: 2012 URL: http://hdl.handle.net/1834/4905
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Precisión en las evaluaciones por área barrida de algunos peces demersales costeros entre los 34º S Y 42º S, Atlántico Sudoccidental OceanDocs
Hansen, J.E.; Hozbor, N.; Lagos, N.; Martos, P..
To estimate the biomass of six species, the stratified design used at present for demersal coastal fish stocks is compared against other design alternatives. Density data (t mn-2 between 34ºS and 42ºS, from the coast line to 50m depth, corresponding to whitemouth croaker (Micropogonias furnieri), patagonian smoothhound (Mustelus schmitti), stripped) weakfish (Cynoscion guatucupa), angular angel shark (Squatina guggenheim), brazilian flathead (Percophis brasiliensis) and skate (Sympterygia bonapartii) collected in surveys carried out in spring and winter in the Argentine Sea (SW Atlantic), were analyzed. The spatial distribution of the species was strongly contagious and influenced by bottom salinity. Different marine zones that showed special salinity...
Tipo: Journal Contribution Palavras-chave: Stock assessment fishery surveys coastal fisheries stratification spatial analysis modelling demersal fish Micropogonias furnieri; Mustelus schmitti; Cynoscion guatucupa; Squatina guggenheim; Percophis brasiliensis; Sympterygia bonapartii PSW; Argentina; Buenos Aires ASW; Uruguay swept area marine environment.
Ano: 2010 URL: http://ocenadoc/1554veasecualser
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