1. University of St Thomas, 7570, Biology, Saint Paul, Minnesota, United States, ;
2. Minnesota Department of Natural Resources, 60640, Fisheries Research Unit, Bemidji, Minnesota, United States,
3. MN DNR, 2114 Bemidji Ave N, Bemidji, United States;
4. Minnesota Department of Natural Resources, 60640, Fisheries Research Group, Saint Paul, Minnesota, United States;