1. Wildlife Epidemiology Laboratory, University of Illinois–College of Veterinary Medicine, Department of Veterinary Clinical Medicine, 2001 S Lincoln Ave., Urbana, Illinois 61802, USA
2. Department of Chemistry, McNeese State University, 4205 Ryan St., Lake Charles, Louisiana 70605, USA
3. Department of Biology, McNeese State University, 4205 Ryan St., Lake Charles, Louisiana 70605, USA
4. Franz Theodore Stone Laboratory, The Ohio State University, 878 Bayview Ave., Put-In-Bay, Ohio 43456, USA