Abstract
Evaluation of avoidance of Miller samplers towed at 8 mph indicated that avoidance began when yellow perch fry were less than 8 mm long and increased as fry grew larger. Catches were increased by increasing towing speed to 11 mph, by using an electric shocking grid in front of the sampler, by using clear and translucent rather than dark, opaque samplers, and by night sampling. A sampler with an aperture 1.5 times as large as the conventional Miller sampler was not more effective. Avoidance by walleye fry occurred, but was less well defined. Application of the results to the development of sampling techniques is discussed.
Full Text
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call