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On the survival of plaice and sole discards in the otter-trawl and beam-trawl fisheries in the North Sea
Van Beek, F.A.; van Leeuwen, P.I.; Rijnsdorp, A.D. (1990). On the survival of plaice and sole discards in the otter-trawl and beam-trawl fisheries in the North Sea. Neth. J. Sea Res. 26(1): 151-160
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    ANE, North Sea
    Beam trawlers
    Otter trawlers
    Population functions > Mortality
    Survival rate
    Pleuronectes platessa Linnaeus, 1758 [WoRMS]; Solea solea (Linnaeus, 1758) [WoRMS]
    Noordzee [Marine Regions]
    Marien/Kust
Auteurs  Top 
  • Van Beek, F.A.
  • van Leeuwen, P.I.
  • Rijnsdorp, A.D., meer
Abstract
    This paper summarizes the reults of survival experiments with plaice and sole discards caught by commercial beam-trawl vessels and a research vessel fishing with an otter trawl, and with soles escaped through the meshes in covered-cod-ends experiments. In the commercial beam-trawl fishery the survival of both plaice and sole discards was estimated to be less than 10%. The survival of soles escaped through the meshes was estimated at 60%. The survival of discards was negatively affected by the catching process. During the catching process mortality was caused through the action of the tickler chains and the injuries imposed during the stay in the net. Under present-day commercial practice the processing of the catch on deck hardly affects the survival of discards.
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