Fig. 1

Density plots of total length (mm) for historic collections of out-migrating juvenile sea lamprey for animals captured from Great Lakes streams (Gray, N = 267) and Atlantic drainages in the northern United States (red, N = 653) are overlaid with a stacked histogram representing the two harvest locales and illustrating the experimental subjects total length (Great Lakes: N = 59, Anadromous: N = 54). Data for historical collections were compiled by J. Hume, Michigan State University