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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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one publication added to basket [23905]
Selectivity experiments with sorting grids in the North Sea brown shrimp (Crangon crangon) fishery Polet, H. (2002). Selectivity experiments with sorting grids in the North Sea brown shrimp (Crangon crangon) fishery. Fish. Res. 54(2): 217-233. dx.doi.org/10.1016/S0165-7836(00)00289-7 In: Fisheries Research. Elsevier: Amsterdam. ISSN 0165-7836; e-ISSN 1872-6763, meer

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Beschikbaar in	Auteur
VLIZ: Open access 263034 [ download pdf ]

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Trefwoorden

By catch Characteristics > Selectivity Codends Fisheries > Shellfish fisheries > Crustacean fisheries > Shrimp fisheries Selectivity Crangon crangon (Linnaeus, 1758) [WoRMS] ANE, Noordzee [Marine Regions]

Author keywords

selectivity; sorting grid; cod-end; Crangon crangon

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Auteur		Top
Polet, H., meer

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Abstract

The fishery for brown shrimp (Crangon crangon) is important in the North Sea and is carried out by more than 600 vessels, with total annual brown shrimp landings of around 20,000 t. Due to the small mesh size used the catches also contain large amounts of by-catch. To find ways of reducing this by-catch, experiments were carried out with a Nordmøre type sorting grid during two trips on a research vessel and three trips on a commercial vessel. The results depended strongly on the catch composition in the brown shrimp fishery. If the catch composition did not cause clogging problems with the sorting grid, it met the objectives it was designed for. The reduction of fish (>70%) and benthos (65%) in the catch was quite high. The commercial brown shrimp catch was reduced by 15%. The cod-end catch consisted mainly of shrimps and required less sorting and the cod-end selectivity for shrimp increased. If, however, material occurred in the catch that caused clogging, the commercial brown shrimp catch was soon below the level acceptable to commercial fishermen.

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