Illegal Walleye introduction may destabilize a wild Lake Trout—Cutthroat Trout fishery in a Wyoming reservoir
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Introduced Lake Trout Salvelinus namaycush coexisted for decades with wild, native Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri and Rainbow Trout O. mykiss in Buffalo Bill Reservoir, Wyoming. Recently, managers became concerned when illegally introduced Walleye Sander vitreus were discovered. The goals of this study were to examine potential habitat constraints on predator-prey interactions, and determine how arrival of a coolwater predator may affect the Oncorhynchus population. We measured limnological variables and used gill nets, electrofishing and trap nets to sample fish ...