1. Research, Evaluation, and Development Section, Ecosystem Science and Management (Biology) Program; University of Northern British Columbia; Prince George BC, V2N 4Z9 Canada
2. Department of Fisheries and Aquaculture, International Centre for Sturgeon Studies; Vancouver Island University; 900 Fifth Street, Nanaimo BC, V9R 5S5 Canada
3. Department of Zoology; University of British Columbia; Vancouver, BC, V6T 1Z4 Canada