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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.

Beschikbaar in  Auteurs 

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

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

    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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