Document de recherche 2010/032
Impacts et risques connexes d’une pêche au filet maillant visant le flétan du Groenland (Reinhardtius hippoglossoides) dans les secteurs côtiers de la sous-zone 0 de l’OPANO
Par M.A. Treble et R.E.A. Stewart
Résumé
Fisheries and Oceans Canada (DFO) Fisheries and Aquaculture Management has requested advice on the potential impacts and associated risks of the development of an inshore Greenland Halibut gillnet fishery in coastal areas of Baffin Island. This research document has been compiled in response to this request.
Gillnets used to capture Greenland Halibut are typically large mesh nets (6”-9” or 153 mm -229 mm) set on the bottom in very deep water (>500 m). The fishing season under review is from 1 July to 10 November and generally corresponds to the open water season. Beluga, Narwhal and Bowhead whales, as well as seals (Ringed, Bearded, Harp), Walrus and Greenland Shark inhabit potential fishing areas along the Baffin Island coast and would all be at risk of entanglement in gillnets set for Greenland Halibut or nets that may become lost during Greenland Halibut fishing. Also, a gillnet-only fishery for Greenland Halibut is not optimal given the high female to male ratio caught by this gear. Longline gear poses fewer risks to the ecosystem of east Baffin Island and should continue to be used in both winter and summer fisheries in inshore areas.
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