Reduction of seal-induced catch and gear damage by modification of trap-net design: Design principles for a seal-safe trap net

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Citation: Suuronen, P., A. Siira, T. Kauppinen, R. Riikonen, E. Lehtonen, and H. Harjunpaa, 2006. Reduction of seal-induced catch and gear damage by modification of trap-net design: Design principles for a seal-safe trap net. Fisheries Research, 79, ps 129-138.
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Summary:

A trap-net modification reduced seal-induced [Grey seal (Halichoerus grypus) and Ringed seal (Phoca hispida botnica)] catch and gear damage in the northern Baltic Sea trap-net fishery for salmon (Salmo salar) and whitefish (Coregonus lavaretus). Target catch remained the same or increased in four of five modified traps.
Field Studies:
Location Fishing gear Reduction technique Bycatch species Effect on bycatch species Catch Effect on target catch Type
Baltic Sea   Trap-net modification Pinnipeds Reduced interactions with gear Salmon and whitefish Target catch remained same or increased in 4 of 5 modified traps. In the wild