1. Aquatic Parasitology Laboratory, Southeastern Cooperative Fish Parasite and Disease Laboratory, School of Fisheries, Aquaculture, and Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, Alabama 36832, U.S.A. (e-mail
2. Southeast Conservation Genetics Laboratory, Warm Springs Fish Technology Center, U.S. Fish and Wildlife Service, 203 Swingle Hall, Auburn, Alabama 36849, U.S.A. (e-mail: )