Improved bycatch reduction in the mixed demersal trawl fishery for Norway pout (Trisopterus esmarkii)

نویسندگان

چکیده

In this study, we compared the bycatch reduction capacity of a trawl fitted with standard rigid sorting grid that newly developed, flexible system called Excluder. We conducted fishing trials in Norway pout (Trisopterus esmarkii) small-meshed fishery North Sea. Catch data were analysed by species and length using catch comparison ratio method. The Excluder significantly reduced (in weight) relative to for blue whiting (Micromesistius poutassou) (−35.6%), mackerel (Scomber scombrus) (−93.3%), horse (Trachurus trachurus) (−99.3%), herring (Clupea harengus) (−89.9%), haddock (Melanogrammus aeglefinus), (−98.6%), (Merlangius merlangus) cod (Gadus morhua) (−97.1%), European hake (Merluccius merluccius) (−98.0%), greater argentine (Argentina sphyraena) (−24.5%). For there was marginal decrease overall efficiency −1.4%. observed is explained larger area grid's differences behaviour between species. While it contributes reduce quota regulated species, also can potentially affect profitability fishery.

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ژورنال

عنوان ژورنال: Estuarine Coastal and Shelf Science

سال: 2023

ISSN: ['1096-0015', '0272-7714']

DOI: https://doi.org/10.1016/j.ecss.2022.108189