Evaluation of seal harassment techniques to protect gill netted salmon.

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Citation: Geiger, A.C. and S.J. Jeffries, 1987. Evaluation of seal harassment techniques to protect gill netted salmon.. Pp. 37-55 in B.R. Mate and J.T. Harvey (eds.): Acoustical Deterrents in Marine Mammal Conflicts with Fisheries. Oregon State University Sea Grant College Program No. ORESU-W-86-001. 116 pp..
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Summary:

Harbor seals (Phoca vitulina) appeared to habituate to acoustic harassment devices placed on gillnets in the Oregon salmon fishery. Results, although inconclusive, demonstrate a possible reduction in ??˛damaged??ˇ salmon, at least in the short-term.
Field Studies:
Location Fishing gear Reduction technique Bycatch species Effect on bycatch species Catch Effect on target catch Type
Oregon Gillnets Acoustic harassment devices Pinnipeds Seals habituated to AHDs Salmon Preliminary results indicate fewer damaged salmon In the wild