205 American Fisheries Society Symposium 57:205–232, 2007 © 2007 by the American Fisheries Society * Corresponding author: trudelm@pac.dfo-mpo.gc.ca Regional Variation in the Marine Growth and Energy Accumulation of Juvenile Chinook Salmon and Coho Salmon along the West Coast of North America MARC TRUDEL* Fisheries and Oceans Canada, Pacific Biological Station 3190 Hammond Bay Road, Nanaimo, British Columbia, V9T 6N7, Canada Department of Biology, University of Victoria Victoria, British Columbia V8W 3N5, Canada MARY E. THIESS Fisheries and Oceans Canada, Pacific Biological Station 3190 Hammond Bay Road, Nanaimo, British Columbia, V9T 6N7, Canada CYNTHIA BUCHER National Oceanic and Atmospheric Administration, National Marine Fisheries Service Northwest Fisheries Science Center, Seattle, Washington 98112, USA EDWARD V. FARLEY, JR. National Oceanic and Atmospheric Administration, National Marine Fisheries Service Auke Bay Laboratory, 11305 Glacier Highway, Juneau, Alaska 99801, USA R. BRUCE MACFARLANE National Oceanic and Atmospheric Sciences, National Marine Fisheries Service Southwest Fisheries Science Center, Santa Cruz, California 95060, USA EDMUNDO CASILLAS National Oceanic and Atmospheric Administration, National Marine Fisheries Service Northwest Fisheries Science Center, Seattle, Washington 98112, USA JOSEPH FISHER College of Oceanic and Atmospheric Sciences, Oregon State University 104 COAS, Administration Building, Corvallis, Oregon 97331, USA JOHN F. T. MORRIS Fisheries and Oceans Canada, Pacific Biological Station 3190 Hammond Bay Road, Nanaimo, British Columbia, V9T 6N7, Canada JAMES M. MURPHY National Oceanic and Atmospheric Administration, National Marine Fisheries Service Auke Bay Laboratory, 11305 Glacier Highway, Juneau, Alaska 99801, USA