1. Department of Clinical Sciences and Center for Marine Sciences and Technology, College of Veterinary Medicine, North Carolina State University, 303 College Circle, Morehead City, North Carolina 28557, USA
2. Biology and Marine Biology, University of North Carolina Wilmington, 601 South College Road, Wilmington, North Carolina 28403, USA
3. Biology Department, Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, Massachusetts 02543, USA
4. Virginia Aquarium & Marine Science Center, 717 General Booth Boulevard, Virginia Beach, Virginia 23451, USA
5. Current address: Audubon Aquarium of the Americas, 1 Canal Street, New Orleans, Louisiana 70130, USA
6. North Carolina Division of Marine Fisheries and Center for Marine Sciences and Technology, 303 College Circle, Morehead City, North Carolina 28557, USA
7. Office of Protected Resources, National Marine Fisheries Service, 1315 East-West Highway, 13th Floor, Silver Spring, Maryland 20910, USA