Affiliation: | 1. U.S. Fish and Wildlife Service, P.O. Box 1306, Albuquerque, NM, 87103 USA;2. U.S. Geological Survey, Texas Cooperative Fish and Wildlife Research Unit, Texas Tech University, Agricultural Sciences 218, Lubbock, TX, 79409 USA;3. U.S. Fish and Wildlife Service, P.O. Box 42125, Lubbock, TX, 79409 USA |