Avoidance behaviour in cod (Gadus morhua) to a bottom-trawling vessel Nils Olav Handegard, Kathrine Michalsen and Dag Tjøstheim Aquat. Living Resour., 16 3 (2003) 265-270 Published online: 15 July 2003 DOI: 10.1016/S0990-7440(03)00020-2