1. Department of Natural SciencesMississippi Valley State UniversityPost Office Box 7254, 14000 Highway 82 WestItta BenaMississippi38941USA
2. Delta Research and Extension Center and Wildlife and Fisheries DepartmentMississippi State UniversityMail Stop 9753, Scales Building, Mississippi StateMississippi39762USA
3. Department of BiologyUniversity of MississippiBox 1848UniversityMississippi38677USA
4. Delta Research and Extension CenterMississippi State UniversityPost Office Box 197StonevilleMississippi38776USA