1. National Oceanic and Atmospheric Administration–FisheriesMukilteo Research Station, 10 Park Avenue, Building BMukilteoWashington98275USA
2. U.S. Geological Survey, Western Fisheries Research Center6505 Northeast 65th StreetSeattleWashington98115USA
3. National Oceanic and Atmospheric Administration, Northwest Fisheries Science Center2725 Montlake Boulevard EastSeattleWashington98112USA
4. School of Aquatic and Fishery Sciences, University of WashingtonBox 355020SeattleWashington98195‐5020USA