1. Food and Bioscience, Sustainable Food Production, SP Technical Research Institute of Sweden, PO Box 5401, Göteborg 402 29, Sweden
2. Department of Aquatic Resources, Swedish University of Agricultural Sciences, Lysekil, Sweden
3. SINTEF Fisheries and Aquaculture, Trondheim, Norway
4. Institute of Marine Research, Bergen, Norway
5. National Institute of Aquatic Resources, Technical University of Denmark, Charlottenlund, Denmark