1. Massachusetts Institute of Technology, Cambridge, MA 02139, USA
2. Mystic Aquarium, Mystic, CT 06355, USA
3. Duke University, Beaufort, NC 28516, USA
4. National Oceanic and Atmospheric Administration, Northeast Fisheries Science Center, Woods Hole, MA 02543, USA
5. Dalhousie University, Halifax, Nova Scotia, Canada B3H 1C2
6. Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
7. University of Connecticut, Storrs, CT 06268, USA
8. Department of Fisheries and Oceans, Dartmouth, Nova Scotia, Canada B2Y 4A2