Field tests of acoustic devices on groundfish gillnets: assessment of effectiveness in reducing harbour porpoise by-catch

Authors: 

Lien, J., C. Hood, D. Pittman, P. Ruel, D. Borggaard, C. Chisholm, L. Wiesner, T. Mahon, and D. Mitchell

Year: 

1995

Journal/Publisher Name: 

In: R.A. Kastelien, J.A. Thomas, and P.E. Nachtigall, eds. Sensory Systems of Aquatic Mammals

Publisher Address: 

De Spil Publishers, Woerden, The Netherlands ISBN 90-72743-05-9

Page #s: 

349-364
Summary: 
Gillnets equipped with acoustic pingers caught only one harbor porpoise (Phocoena phocoena) compared to 42 caught in control nets off of New Hampshire, USA. Alarms sounds are above groundfish hearing and are not expected to affect fish catch.