1. Marine Institute, Rinville, Oranmore, Co. Galway H91 R673, Republic of Ireland
2. National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Greater Atlantic Regional Fisheries Office, Maine Field Station, 17 Godfrey Drive, Orono, Maine 04473, USA
3. National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northeast Fisheries Science Center, Maine Field Station,17 Godfrey Drive, Orono, Maine 04473, USA
4. National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northeast Fisheries Science Center, 166 Water Street, Woods Hole, Massachusetts 02543, USA