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Experiments were carried out during three cruises in the period 1997–1999, to develop and test a sorting grid system in the North Sea industrial trawl fishery for Norway pout. The system should separate bycatch species like haddock, whiting and other human consumption species from the main target species Norway pout, and other target species like blue whiting, etc. During the first cruise a prototype...
Two sorting grid systems with three different bar spacings for size selecting mackerel in pelagic trawls have been tested during four surveys. In the mackerel fishery, the value of the catch depends on fish size; the largest mackerel are priced substantially higher than the smaller fish. Using a grid-selection system to improve size selection in this fishery would therefore increase fishermen's income...
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