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By-catch and Discarding in Pelagic Trawl Fisheries: Final report Morizur, Y.; Tregenza, N.; Heessen, H.; Berrow, S.; Pouvreau, S. (1996). By-catch and Discarding in Pelagic Trawl Fisheries: Final report. IFREMER: [s.l.]. 213 pp.

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Beschikbaar in	Auteurs
VLIZ: Open access 251012 [ download pdf ]

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Trefwoorden

Aquatic organisms > Marine organisms > Aquatic mammals > Marine mammals Bycatches Characteristics > Values Fisheries > Marine fisheries > Pelagic fisheries Fishing vessels > Trawlers Forestry > Forestry practices > Logging > Landings ANE, France [Marine Regions]; ANE, Kanaal [Marine Regions]; ANE, Nederland [Marine Regions]; ANE, North East Atlantic [Marine Regions]; ANE, United Kingdom [Marine Regions] Marien/Kust

Author keywords

Albacore, Bluefin tuna, Bass, Black bream, Whiting, Hake, Anchovy, Pilchard, Mackerel, Horsemackerel, Seal, Cetacean, Incidental mammal catch, Reasons for discarding, Discards, By catch, Pelagic trawl

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Auteurs		Top
Morizur, Y. Tregenza, N. Heessen, H.	Berrow, S. Pouvreau, S.

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Abstract

Unintentional catches of dolphins were recorded in four of the investigated fisheries (Dutch horsemackerel, French tuna, French hake and French sea bass) at a rate of 1 dolphin per 100 tow hours; Grey seals were caught in the Irish herring fishery at a rate of 4 individuals per 100 tow hours. The fish catches showed a high selectivity in several pelagic fisheries with a low discard rate (< 20 % by weight of the total catch) and a high percentage of the target species (> 50 % by weight) in the catch. However in some fisheries poor selectivity was observed particularly in the French hake fishery (with discards equal to 50 % of the total catch) and in the French black bream fisheries where legal targeted individuals amounted less than 30 % by weight in the total catch. This might be improved by appropriate technical measures such a minimum mesh size appriopriate according to the target species.

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