Abstract
In August 1991 a long-line and a bottom trawl comparative survey, covering depths between 950 and 1450 m, was conducted off west Greenland. Great differences in catch composition and length frequency of Greenland halibut (Reinhardtius hippoglossoides) and roughhead grenadier (Macrourus berglax) were observed in the two types of gear. Calculation of relative selection (RS) of Greenland halibut showed that long-lines were up to 30 times more effective in catching large fish, and fishing with long-lines by comparison to the trawl allows a greater maximum sustainable yield (MSY). The RS for roughhead grenadier showed that the long-lines were about 18 times more effective for this species up to 71 cm total length but there is probably a drop in the RS for the very large fish.
These results tend to confirm previous work in this field suggesting that for Greenland halibut in particular the long-line is probably the best method offishing. Roundnose grenadier were present in large numbers in the trawl but totally absent from the longline catches
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© 1995 Springer Science+Business Media Dordrecht
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Jørgensen, O.A. (1995). A Comparison of Deep Water Trawl and Long-Line Research Fishing in the Davis Strait. In: Hopper, A.G. (eds) Deep-Water Fisheries of the North Atlantic Oceanic Slope. NATO ASI Series, vol 296. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8414-2_8
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DOI: https://doi.org/10.1007/978-94-015-8414-2_8
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