1. Department of Biological Sciences and the Advanced Environmental Research Institute University of North Texas 1155 Union Circle, Number 310559 Denton Texas 76203 USA
2. Texas Parks and Wildlife Department Heart of the Hills Fisheries Science Center 5103 Junction Highway, Mountain Home Texas 78058 USA
3. Department of Fisheries College of Fisheries and Ocean Sciences University of Alaska Fairbanks 2150 Koyukuk Drive Fairbanks Alaska 99708 USA