efficiency of single and twin/ multi-rig trawling

in the Skagerrak and Kattegat Nephrops fishery

Target species:
Norway lobster, cod, haddock and plaice

Area, Vessel
The study utilised discard data (1997- 2012) from the Skagerrak and Kattegat.
Gear type:
demersal

Gear modification
The Nephrops directed demersal trawl fishery in the Skagerrak and Kattegat (mesh size between 70 and 90 mm) uses single, twin and multi-rig trawls. The catch rates of the four main commercial species caught in single and twin/multi-rig trawls over a 15 year period were compared.


Results:
Multi-rig trawls were found to catch approximately 2 times more Norway lobster compared to single trawls. No significant differences among the two gears were observed for plaice, haddock and cod.
Further information:
Jordan Feekings (jpfe@aqua.dtu.dk) Feekings et al., Influence of twin and multi-rig trawl systems on CPUE in the DanishNorway lobster (Nephrops norvegicus) fishery. Fisheries Research 175, 51–56.




Citation :
Feekings, J. et al. , 2017. efficiency of single and twin/ multi-rig trawling . In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.