1. Department of Natural Resources Management Texas Tech University Lubbock 79409 TX USA
2. Department of Biological Sciences Texas Tech University Lubbock 79409 TX USA
3. Texas Parks and Wildlife Department 1702 Landmark Lane Lubbock 79415 TX USA
4. Department of Fisheries and Wildlife Oregon State University Corvallis 97331 OR USA
5. Texas Parks and Wildlife Department P.O. Box 659 Canyon 79015 TX USA
6. U.S. Geological Survey Texas Cooperative Fish and Wildlife Research Unit Texas Tech University Lubbock 79409 TX USA