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The effect of a flip-up rope on the catch efficiency of an 8-m beam trawl
Groeneveld, K.; Rijnsdorp, A.D. (1990). The effect of a flip-up rope on the catch efficiency of an 8-m beam trawl. CM Documents - ICES, C.M. 1990(B:16). International Council for the Exploration of the Sea: Copenhagen. 4 + tables + figures pp.
Part of: ICES CM Documents - ICES. ICES: Copenhagen. ISSN 1015-4744
Available in  Authors 
    Vlaams Instituut voor de Zee: Open access 274611 [ download pdf ]
Keywords
    Data > Fishery data > Catch/effort
    Fisheries > Finfish fisheries > Flatfish fisheries
    Gear selectivity
    Nets > Fishing gear > Fishing nets > Trawl nets > Bottom trawls
    Gadus morhua Linnaeus, 1758 [WoRMS]; Limanda limanda (Linnaeus, 1758) [WoRMS]; Merlangius merlangus (Linnaeus, 1758) [WoRMS]; Pleuronectes platessa Linnaeus, 1758 [WoRMS]; Scophthalmus maximus (Linnaeus, 1758) [WoRMS]; Solea solea (Linnaeus, 1758) [WoRMS]
    Marine/Coastal
Authors  Top 
  • Groeneveld, K.
  • Rijnsdorp, A.D.
Abstract
    In this paper the catch efficiency of an 8 m beam trawl with 8 tickler chains, designed for sampling sandy and muddy grounds, is compared with a similar trawl equipped with a flip-up rope, that can be employed in more stony areas. It is shown that the beam trawl with the flip-up rope has a significant lower catch rate for sole, (Solea solea), plaice (Pleuronectes platessa), dab (Limanda limanda), turbot (Scophthalmus maximus) and whiting (Merlangius merlangus), but not for cod (Gadus morhua). The effect of fish size on catch efficiency was tested for plaice, sole, dab and whiting. In sole, plaice and whiting the flip-up especially reduced the catch efficiency for the smaller fish.
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