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handle: 10261/28755
[ES] El presente trabajo un VPA como método de evaluación del recurso de Nephrops norvegicus en el caladero denominado Serola, frente a Barcelona y tambien la relación producción por recluta de la misma población utilizando distintos parametros de crecmiento y mortalidad. Se presenta también uan estimación de densidad por el método del área barrida y se compara con datos de estimación por métodos geoestadísticos realizados previamente en la misma zona. Los resultados indican que la población de cigala delante de Barcelona no presenta sintomas de alta sobreexplotación y que la capturabilidad varia mucho en función de la época del año, decrciendo notablemente en otoño e invierno, período en el cual las hembras están ovadas. Separadamente por sexos se dan valores de biomasa media y número de individuos, reclutas y biomasa óptimas de producción por recluta, en función de los distintos parámetros usados
[EN] The paper describes VPA results for Nephrops norvegicus off the Serola Bank (Western Mediterranean) and the yield per recruit of the same exploitable stock using different input parameters of growth and mortality. Also density estimates by swept-area are presented and compared with evaluations by geostatistic methods previously realized on this bank. Results show that in the Norway lobster population off Catalonia there are no signs of high overexploitation and that the catchability varies considerably between months, decreasing when females are berried during autumn and winter. Values of mean biomass and number, recruits and optimal Y/R, are give for each set of parameters used and for males and females separately
7 páginas, 3 figuras, 1 tabla, 1 apéndice.-- Contribución a "Northwestern Mediterranean Fisheries", J. Lleonart (ed.)
Peer reviewed
Nephrops norvegicus, Fishery, Population dynamics, Evaluación, Y/R, Pesquería, VPA, Mediterranean, Evaluation, Mediterráneo, Dinámica de poblaciones
Nephrops norvegicus, Fishery, Population dynamics, Evaluación, Y/R, Pesquería, VPA, Mediterranean, Evaluation, Mediterráneo, Dinámica de poblaciones
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