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Please use this identifier to cite or link to this item: http://hdl.handle.net/1834/2557

Title: Ecología trófica de la merluza común (Merluccius hubbsi) del Mar Argentino. Parte 3. Consumo anual de alimento a nivel poblacional y su relación con la explotación de las pesquerías multiespecíficas.
Other Titles: Trophic ecology of the common hake (Merluccius hubbsi) in the continental shelf. Parte 3. Annual food consumption by stocks and its relation to exploitation of multispecific fisheries.
Authors: Prenski, L.B.
Angelescu, V.
ASFA Terms: Trophic relationships
Food consumption
Mathematical models
Simulation
Biomass
Issue Date: 1993
Publisher: Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero
Citation: INIDEP documento científico, 1. p. 1-118
Abstract: The English contents gives a general view on the topics treated in this contribution developed mainly on the basis of a quantitative and ecological analysis of trophic relationships in the Argentinian Continental Shelf, in which common hake and its food species are involved (anchovy, mictophids, small fishes, squids and macrozooplankton crustaceans). The most original part consist in the application of bioenergetic and simulation models for estimating the annual food consumption by individuals and by stocks of common hake during 1970-1987, considering at the same time, the effects of commercial catches on the stockbiomasses in predator-prey relationships. From this point of view three trophic-fishery relationships are evident, namely: "Common hake-Anchovy"; "Common hake-squids" and "Common hake-Common hake". The first one refers to a potential fishery, since the anchovy stocks are not yet intensively exploited; in the second relationship, the stocks of both integrant species makes the object of the main argentinian marine commercial fisheries; and the third corresponds to cannibalism. Consequently, the importance of the "tropic catch", that is to say, the food biomass consumed by the common hake stocks (corresponding to a part of the natural mortality M) and the necessity to consider this catch together with the commercial catch to attain a complete management strategy for the multispecies fisheries in the region of the Argentinian Continental Shelf.
URI: http://hdl.handle.net/1834/2557
ISSN: 0327-9332
Appears in Collections:3. INIDEP Documento Cientifico

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