1. Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, and Department of Microbiology, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA.
2. Center for Molecular and Comparative Endocrinology, Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, 316 Rudman Hall, 46 College Road, Durham, NH 03824, USA.
3. Natural Resources Department, Confederated Tribes of Siletz Indians, P.O. Box 549 Siletz, OR 97380, USA.
4. US Geological Survey, Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA.