1. Department of Fisheries and Wildlife; Oregon State University; 104 Nash Hall Corvallis OR 97331 U.S.A.
2. U.S. Geological Survey, Oregon Department of Fish and Wildlife; 28655 Highway 34 Corvallis OR 97333 U.S.A.
3. Oregon Hatchery Research Center; 2418 East Fall Creek Road Alsea OR 97324 U.S.A.
4. U.S. Geological Survey, Oregon Cooperative Fish and Wildlife Research Unit; Oregon State University; 104 Nash Hall Corvallis OR 97331 U.S.A.