Abstract
Abstract In late summers of 1985 and 1986, the efficacies of two commercially manufactured crayfish baits (one each in block and pelleted form) and dead fish as attractants for trapping the mud crayfish Orconectes immunis were assessed in a small Wisconsin lake (area, 5.7 hectares; maximum depth, 6 m). Five sites on the lake were sampled continuously for a 30-d period each year, and each site was fished with three traps. Total harvest of crayfish was 3,949 in 1985 and 2,226 in 1986. Traps with pelleted bait (Crawfish Bait Jumbo) caught more than the others by a 3-to-1 margin in 1985 and by a 2-to-1 margin in 1986. The commercially prepared baits were easier to handle, lacked a putrid odor, required less labor and no refrigeration, and were more readily available than fish carcasses.
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