1. Center for Fisheries, Aquaculture, and Aquatic Sciences Southern Illinois University 1125 Lincoln Drive Carbondale Illinois 62901‐6511 USA
2. U.S. Geological Survey Upper Midwest Environmental Sciences Center 2630 Fanta Reed Road La Crosse Wisconsin 54603‐1223 USA
3. Illinois Department of Natural Resources Division of Fisheries 5931 Fox River Drive Plano Illinois 60545‐9747 USA