1. Texas AgriLife Research, 1619 Garner Field Road, Texas A&M University System, Uvalde, Texas 78801, USA
2. Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, 101 Trotter Hall, Manhattan, Kansas 66506-5601, USA
3. Department of Wildlife and Fisheries Sciences, Texas A&M University, 210 Nagle Hall, 2258 TAMU, College Station, Texas 77843-2258, USA
4. Department of Forestry Wildlife and Fisheries, University of Tennessee, 274 Ellington Plant Sciences Building, 605 Airways Blvd., Jackson, Tennessee 38301-4563, USA
5. Texas AgriLife Extension Service, Texas A&M University System, 210 Nagle Hall, 2258 TAMU, College Station, Texas 77843, USA.