1. U.S. Department of Agriculture Agricultural Research Service Warmwater Aquaculture Research Unit Thad Cochran National Warmwater Aquaculture Research Center 141 Experiment Station Road Stoneville Mississippi 38776 USA
2. Department of Wildlife, Fisheries, and Aquaculture College of Forest Resources Mississippi State University Post Office Box 9690 Mississippi State Mississippi 39762 USA
3. Thad Cochran National Warmwater Aquaculture Center Delta Research and Extension Center Mississippi State University Post Office Box 197 Stoneville Mississippi 38776 USA
4. Department of Comparative Biomedical Sciences College of Veterinary Medicine Mississippi State University Post Office Box 6100 Mississippi State Mississippi 39762 USA
5. Department of Pathobiology and Population Medicine College of Veterinary Medicine Mississippi State University Post Office Box 6100 Mississippi State Mississippi 39762 USA