1. Wisconsin Cooperative Fishery Research Unit, University of Wisconsin – Stevens Point, College of Natural Resources, 800 Reserve Street, Stevens Point, WI 54881, USA.
2. US Geological Survey, Wisconsin Cooperative Fishery Research Unit, University of Wisconsin – Stevens Point, College of Natural Resources, 800 Reserve Street, Stevens Point, WI 54481, USA.
3. Wisconsin Department of Natural Resources, 110 S. Neenah Avenue, Sturgeon Bay, WI 54235, USA.
4. University of Alaska Fairbanks, School of Fisheries and Ocean Sciences, 245 O’Neill Building, Fairbanks, AK 99775, USA.