Affiliation: | a Department of Fisheries and Oceans PO Box 5667, St John's, Newfoundland, Canada, A1C 5X1; Phone: +1 709 7725541; Fax: +1 709 7724188; e-mail: carscaddenj{at}dfo-mpo.gc.ca b Biopsychology Programme, Memorial University of Newfoundland, St John's Newfoundland, Canada, A1B 3X9 c Department of Fisheries and Oceans, St John's Newfoundland, Canada, A1C 5X1 |