An Attempt to Train Hatchery-Reared Brook Trout to Avoid Predation by the Common Loon

摘要: Abstract Hatchery-reared yearling brook trout (Salvelinus fontinalis) were trained in 1970 and 1972 to avoid an electrified plastic model loon moving through the water a hatchery raceway. Immediately after training programs, released together with untrained 23-ha lake which accomodated 2-3 common loons other potential predators. Intensive gillnetting 10-12 wk planting indicated about 16% survival of compared 18% for trout. The received by apparently had little value wild. low rates experienced all groups suggested high level predation.