Bycatch reduction in the deep-water shrimp (Pandalus borealis) trawl fishery with a large mesh top panel

Kristine Cerbule*, Nadine Jacques, Hermann Pettersen, Ólafur A. Ingólfsson, Bent Herrmann, Eduardo Grimaldo, Roger B. Larsen, Jesse Brinkhof, Manu Sistiaga, Dagfinn Lilleng, Jure Brčić

*Corresponding author for this work

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Abstract

In the Northeast Atlantic deep-water shrimp (Pandalus borealis) trawl fishery, the bycatch of juvenile fish and shrimp represents a problem. This study evaluated if inserting a 200 mm mesh size top-panel in the last three sections of the tapered upper belly section of the trawl could reduce bycatch of juveniles while maintaining the catch efficiency for deep-water shrimp. The bycatch species investigated were Greenland halibut (Reinhardtius hippoglossoides), redfish (Sebastes spp.) and polar cod (Boreogadus saida). The bycatch of Greenland halibut and the smallest polar cod was significantly reduced, while no effect was found for redfish. The large mesh panel did not lead to a significant loss of deep-water shrimp. The results of this study illustrate how a simple modification of a fishing gear can mitigate the bycatch problem in a shrimp fishery, without significant losses of the target species.
Original languageEnglish
Article number126001
JournalJournal for Nature Conservation
Volume61
Number of pages8
ISSN1617-1381
DOIs
Publication statusPublished - 2021

Keywords

  • Large mesh panel
  • Shrimp trawl
  • Pandalus borealis
  • Species selectivity
  • Bycatch reduction

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