1. US Geological Survey, New York Cooperative Fish and Wildlife Research Unit, Department of Natural Resources and the Environment Cornell University Ithaca New York USA
2. Fisheries, Aquatic Science and Technology Laboratory Alaska Pacific University Anchorage Alaska USA
3. US Fish and Wildlife Service Anchorage Field Office Anchorage Alaska USA
4. US National Oceanographic and Atmospheric Administration, Fisheries, West Coast Region, Oregon Washington Coastal Office Portland OR USA