1. Department of Fish, Wildlife, and Conservation Ecology New Mexico State University 2980 South Espina Street Las Cruces New Mexico 88003 USA
2. U.S. Geological Survey, New Mexico Cooperative Fish and Wildlife Research Unit 2980 South Espina Street Las Cruces New Mexico 88003 USA
3. New Mexico Department of Game and Fish 1 Wildlife Way Santa Fe New Mexico 87507 USA
4. U.S. Fish and Wildlife Service, Abernathy Fish Technology Center, Conservation Genetics Program 1440 Abernathy Creek Road Longview Washington 98632 USA