[1] Fed. Research Centre for Fisheries, Inst. for Fish. Technol./Fish Qual., Palmaille 9, D-22767 Hamburg, Germany
[2] Swedish Inst. for Food/Biotechnology, SIK, Box 5401, S-40229 Göteorg, Sweden
[3] IFREMER, Rue de L'ile d'Yeu, F-44311 Nantes Cedex 03, France
[4] Netherlands Inst. for Fisheries Res., RIVO-DLO, P.O. Box 68, NL-1970 AB Ijmuiden, Netherlands
[5] Instituto de Frio, CSIC, Ciudad Universitria, 28040 Madrid, Spain
[6] Inst. Portugues de Invest. Maritima, Avenue de Brasilia, P-1401 Lisboa, Portugal