1. Department of Wildlife, Fisheries, and Conservation Biology, University of Maine, 5755 Nutting Hall, Room 210, Orono, Maine 04469, USA
2. Maine Department of Marine Resources, 32 Blossom Lane, Augusta, Maine 04333, USA
3. U.S. Geological Survey, Maine Cooperative Fish and Wildlife Research Unit, Department of Wildlife, Fisheries, and Conservation Biology, University of Maine, 5755 Nutting Hall, Room 210, Orono, Maine 04469, USA