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handle: 10261/28722
[ES] Se ha analizado la evolución de la pesca de Aristeus antennatus en los últimos 15 años en la costa catalana. Las capturas están compuestas mayoritariamente por ejemplares maduros. La distribución de tallas explotadas, así como la talla media de captura, se han mantenido estables durante el período 1984-1991; el esfuerzo aplicado sobre esta especie ha experimentado pequeñas variaciones. El rango de tallas explotadas fue de 15-66 mm de cefalotórax, en las hembras, y 17-38 mm en los machos. La explotación de esta especie se limita a caladeros situados en los cañones submarinos, entre 400-800 m de profundidad. Las capturas experimentan marcadas variaciones estacionales, con máximos en primavera-verano, coincidiendo con el período reproductor. Se proponen como valores anuales de la tasa de mortalidad natural M 0.5 para las hembras y 0.8 para los machos, valores muy inferiores a los estimados para otros peneidos. El conjunto de estos factores es indicativo de que nos encontramos ante una estrategia de pesca de arrastre cercana al óptimo
[EN] The evolution of the fishing of Aristeus antennatus during the last 15 years on the Catalan coast has been analyzed. Major components of catches, are mature individuals. The exploited length frequency distribution, as well as the mean size of catches remained stable during 1984-1991; the fishing effort directed to this species has undergone slight variations. The exploited sizes ranged between 15-66 mm carapace length for females and 17-38 mm for males. The exploitation of this species is limited to fishing grounds located in submarine canyons, between 400-800 m depth. Catches showed marked seasonality, with maximum values in spring-summer, during the reproduction period. Annual natural mortality rates M of 0.5 for females and 0.8 for males are proposed, values much lower than those estimated for other penaeids. Considering all these facts together, it appears that we are dealing with a bottom trawl fishing strategy close to the optimum
This study was partially financed by bthe Commission of the European Communities (DG XIV) and by grants from the CIRIT (Generalitat de Catalunya) and Caixa de Barcelona
8 páginas, 6 figuras, 2 tablas.-- Contribución a "Northwestern Mediterranean fisheries", J. Lleonart, (eds.)
Peer reviewed
Deep bottom trawling, Western Mediterranean, Mediterráneo occidental, Aristeus antennatus, Arrastre a gran profundidad
Deep bottom trawling, Western Mediterranean, Mediterráneo occidental, Aristeus antennatus, Arrastre a gran profundidad
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