Fishery dynamics of blue whiting, Micromesistius poutassou, a highly discarded bycatch species in the NW Mediterranean Sea

نویسندگان

چکیده

This study characterized the fishery dynamics of blue whiting, a bycatch species bottom trawl Norway lobster fishery, in NW Mediterranean. Landings and effort data over last two decades were combined with current information on spatial distribution catch, size age structure whiting year. Recruitment to demersal habitat occurred from 5 cm total length (TL) shelf break spring (April-May), when discards showed highest values (>95% catch). Adults located upper slope, large individuals (≥26 TL) abundant during reproductive period (January-March). A decline landings has been observed decade, probably related absence intense deep convection processes winter since 2013, which favour recruitment species. The effect exploitation decrease cannot be disregarded considering that bulk catch is made up immature (age 0) individuals, presence old very low.

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ژورنال

عنوان ژورنال: Scientia Marina

سال: 2022

ISSN: ['1886-8134', '0214-8358']

DOI: https://doi.org/10.3989/scimar.05240.025