1. Department of Biology, Georgia Southern University, 4324 Old Register Road, Statesboro, Georgia 30458.
2. Department of Psychology, University of Stirling, Stirling, FK9 4LA, Scotland, United Kingdom.
3. Institute of Zoology, University of Veterinary Medicine, Buenteweg 17, 30559 Hannover, Germany.
4. Zoological Institute of the Russian Academy of Sciences, Universitetskaya embankment 1, 199034 Saint Petersburg, Russia.
5. School of Forestry and Wildlife Sciences, College of Veterinary Sciences, Auburn University, Auburn, Alabama 36849.