1. Department of Entomology and Wildlife Ecology, University of Delaware, Newark, Delaware;
2. Odum School of Ecology, University of Georgia, Athens, Georgia;
3. Department of Veterinary Pathology, University of Georgia College of Veterinary Medicine, Athens, Georgia;
4. University of Delaware Cooperative Extension Service, Newark, Delaware;
5. Delaware Department of Health and Social Services, Division of Public Health, Dover, Delaware