1. Missouri Cooperative Fish and Wildlife Research Unit The School of Natural Resources University of Missouri, 1111 East Rollins Street Columbia Missouri 65211 USA
2. U.S. Geological Survey, Wisconsin Cooperative Fishery Research Unit College of Natural Resources University of Wisconsin–Stevens Point, 800 Reserve Street Stevens Point Wisconsin 54481 USA
3. South Dakota Department of Game, Fish, and Parks 603 East 8th Avenue Webster South Dakota 57274 USA
4. Wisconsin Department of Natural Resources, Bureau of Fisheries Management, Treaty Fisheries Assessment Team 8770 Highway J. Woodruff Wisconsin 54568 USA
5. Department of Fisheries, Wildlife and Conservation Biology University of Minnesota 2003 Upper Buford Circle St. Paul Minnesota 55108 USA
6. Minnesota Department of Natural Resources 50317 Fish Hatchery Road Waterville Minnesota 56096 USA