1. Department of Biology, Memorial University of Newfoundland and Labrador, St. John’s, NL A1C 5S7, Canada
2. Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John’s, NL A1C 5S7, Canada
3. Ecological Science Section, Fisheries and Oceans, Canada, St. John’s, NL A1C 5X1, Canada
4. Alaska Fisheries Science Center, National Oceanographic and Atmospheric Administration, Newport, Oregon 97365, USA