1. Fisheries Resource Assessment and Monitoring Division; Northwest Fisheries Science Center; National Marine Fisheries Service; NOAA; Seattle Washington 98112 USA
2. Fish Ecology Division; Southwest Fisheries Science Center; National Marine Fisheries Service; NOAA; 110 Schaffer Road Santa Cruz California 95060 USA
3. School of Aquatic and Fishery Sciences; University of Washington; Box 355020 Seattle Washington 98105 USA