1. Pennsylvania Cooperative Fish and Wildlife Research Unit; Pennsylvania State University; 413 Forest Resources Building University Park Pennsylvania 16802 USA
2. Pennsylvania Fish and Boat Commission; Bureau of Fisheries; Division of Fisheries Management; 1601 Elmerton Avenue Harrisburg Pennsylvania 17106 USA
3. Georgia Department of Natural Resources; Wildlife Resources Division; Post Office Box 2989 Waycross Georgia 31502-2089 USA
4. Virginia Department of Game and Inland Fisheries; 3801 John Tyler Memorial Highway Charles City Virginia 23030 USA
5. South Dakota Department of Game, Fish, and Parks; 4500 South Oxbow Avenue Sioux Falls South Dakota 57106 USA
6. U.S. Geological Survey; Pennsylvania Cooperative Fish and Wildlife Research Unit; Pennsylvania State University; 402 Forest Resources Building University Park Pennsylvania 16802 USA