Evaluation of Lake Trout Index Netting Methods in Ten Northeastern MinnesotaLakes

摘要

Three methods of estimating relative abundance of lake trout Salvelinus namaycushwere tested and compared in 10 inland Minnesota lake trout lakes. Monofilament gill nets were fished for 30 minutes during daylight hours at randomly selected near shore locations in spring and fall. Multifilament gill nets were fished overnight in water less than 13 deg C during summer. Lake trout or cisco Coregonus artedi often dominated the catch by each method.