AquaticMammals

Supported through Joint Sponsorship by the European Association for Aquatic Mammals,

the Alliance of Marine Mammal Parks and Aquariums, and the International Marine Animal Trainers’ Association

Founded by EAAM in 1974

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Aquatic Mammals, Volume 37, Number 4, 2011 ISSN 0167-5427

ContentsN. Funasaka, M. Yoshioka, M. Suzuki, K. Ueda, H. Miyahara, & S. Uchida: Seasonal Difference of Diurnal Variations in Serum Melatonin, Cortisol, Testosterone, and Rectal Temperature in Indo-Pacific Bottlenose Dolphins (Tursiops aduncus) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .433

U. Siebert, B. Pozniak, K. A. Hansen, G. Nordstrom, J. Teilmann, N. van Elk, A. Vossen, & R. Dietz: Investigations of Thyroid and Stress Hormones in Free-Ranging and Captive Harbor Porpoises (Phocoena phocoena): A Pilot Study. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .443

G. B. Bartha, S. Gowans, P. Simard, M. Tetley, & E. O. Keith: Population Size and Site Fidelity of North Atlantic Minke Whales (Balaenoptera acutorostrata acutorostrata) off the Atlantic Coast of Nova Scotia, Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .454

J. L. Miksis-Olds & S. E. Parks: Seasonal Trends in Acoustic Detection of Ribbon Seal (Histriophoca fasciata) Vocalizations in the Bering Sea. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .464

C. Gomez-Salazar, F. Trujillo, & H. Whitehead: Photo-Identification: A Reliable and Noninvasive Tool for Studying Pink River Dolphins (Inia geoffrensis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .472

B. J. Le Boeuf, R. Condit, P. A. Morris, & J. Reiter: The Northern Elephant Seal (Mirounga angustirostris) Rookery at Año Nuevo: A Case Study in Colonization. . . . . . . . . . . . . . . . . . . . .486

Short NotesK. Melillo-Sweeting, J. P. Reid, L. Gittens, N. Adimey, & J. Z. Dillet: Observations and Relocation of a West Indian Manatee (Trichechus manatus) Off Bimini, The Bahamas. . . . . . . . . . . . . . . . . . . . . . . . . .502

R. W. Baird, G. S. Schorr, D. L. Webster, S. D. Mahaffy, D. J. McSweeney, M. B. Hanson, & R. D. Andrews: Open-Ocean Movements of a Satellite-Tagged Blainville’s Beaked Whale (Mesoplodon densirostris): Evidence for an Offshore Population in Hawai‘i?. . . . . . . . . . . . . . . . . . . . . . . .506

V. Martín, M. Tejedor, M. Pérez-Gil, M. L. Dalebout, M. Arbelo, & A. Fernández: A Sowerby’s Beaked Whale (Mesoplodon bidens) Stranded in the Canary Islands: The Most Southern Record in the Eastern North Atlantic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .512

Historical PerspectivesG. C. Ray & F. M. Potter, Jr.: The Making of the Marine Mammal Protection Act of 1972. . . . . . . . . . . . . .520

ObituaryVictor B. Scheffer, Ph.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .553

Aquatic MammalsAquatic Mammals publishes hard copies on-demand, CDs, and online peer-reviewed scientific articles related to

marine mammals (whales, dolphins, seals, fur seals, sea lions, walrus, dugongs, manatees, sea otters, and polar bears). Topics of publication on both captive animals and wild marine mammals include aspects of husbandry; behavior; conservation; veterinary medicine; anatomy; physiology; training; population trends; and the effects of pollution,

climate change, and noise. In addition, Aquatic Mammals has the Historical Perspectives feature, which includes essays and high definition DVDs of interviews with prominent marine mammal scientists. The journal also publishes Book Reviews.

Editor and Copyright: Kathleen M. Dudzinski

Co-Editors: Justin D. Gregg, Robin D. Paulos, Shane B. Kanatous, and David A. S. Rosen

P.O. Box 711, Old Mystic, CT 06372-0711, USA

Prepared and published by Document and Publication Services, Western Illinois University, Macomb, IL 61455, USA

Established by the EAAM in 1974

Aquatic MammalsThe European Association for Aquatic Mammals (EAAM), the Alliance of Marine Mammal Parks and Aquariums (AMMPA), and the International Marine Animal Trainers’ Association jointly

sponsor Aquatic Mammals (ISSN 0167-5427), published four times per year.

Managing EditorKathleen M. Dudzinski, Ph.D.

P.O. Box 711, Old Mystic, Connecticut 06372-0711, USAE-mail: kathleen@dcpmail.org or aquaticmammals@gmail.com, Tel: +1 (860) 514-4704

Co-EditorsJustin D. Gregg, Ph.D., Dolphin Communication Project

E-mail: justin@dcpmail.org

Robin D. Paulos, Ph.D.E-mail: robin.paulos@gmail.com

Shane B. Kanatous, Ph.D., Department of Biology, Colorado State UniversityE-mail: Shane.Kanatous@ColoState.edu

David A. S. Rosen, Ph.D., Marine Mammal Research Unit, University of British ColumbiaE-mail: rosen@zoology.ubc.ca

Book Review EditorSunna Edberg, Kolmårdens Djurpark

E-mail: sunna.edberg@kolmarden.com

Editors EmeritiWillem H. Dudok van Heel, Victor J. A. Manton, Paul E. Nachtigall, Jeanette A. Thomas

Editorial BoardArne Bjørge, Institute of Marine Research, Gaustadalleen 21, 0349 Oslo, NorwayManuel E. dos Santos, Instituto Superior de Psicologia Aplicada, Lisboa, Portugal

Manuel García Hartmann, Marineland Antibes, FranceHeidi Harley, Division of Social Sciences, New College of Florida, Sarasota, Florida, USA

A. Rus Hoelzel, School of Biological and Biomedical Sciences, University of Durham, Durham, UKChristina Lockyer, North Atlantic Marine Mammal Commission, Tromsø, Norway

Lee A. Miller, Institute of Biology, University of Southern Denmark, Odense, DenmarkPaul E. Nachtigall, Hawaii Institute of Marine Biology, Kailua, Hawaii, USA

Giuseppe Notarbartolo di Sciara, Tethys Research Institute, Milano, ItalyDan Odell, Hubbs-Sea World Research Institute, Orlando, Florida, USA

Grey Stafford, Wildlife World Zoo, Litchfield Park, Arizona, USA

Publication and Administrative Services Document and Publication Services (DPS), Western Illinois University, Macomb, Illinois 61455, USA

Cover Photo CreditsMain Photo: An aerial photograph of Año Nuevo Island on 19 January 1980;

it is high tide a week before the peak of the breeding season. A record 1,216 pups were born on the island in 1980, but only 52.4% survived to weaning. Photo credit: B. Le Boeuf

Inset Photo: A high-ranking adult male issues a threat vocalization warning competitors to move away from the females, with their pups, that he is guarding for exclusive mating purposes. Photo credit: B. Le Boeuf

Aquatic MammalsBoard of the European Association for Aquatic Mammals (EAAM)

www.eaam.orgPresident: Claudia Gili, Acquario di Genova, president@eaam.org

President-Elect: Jesús Fernández Morán, Zoo Aquarium Madrid, Parques Reunidos, S.A., president_elect@eaam.org

Past President (2008-2009): Birgitta Mercera, Parc Asterix, past_ president@eaam.orgSecretary/Treasurer: Camino Herreros Paris, Dolfinarium Harderwijk, secretary@eaam.org

Information Committee: Dani Barchana, Chris Ireland, Ann-Louise Jensen, information@eaam.org

Alliance of Marine Mammal Parks and Aquariums (AMMPA)www.ammpa.org

Executive Director: Marilee MenardWestminster, Colorado, USA; E-mail: ammpa@aol.com

2011 Board of DirectorsPresident: Dave Blasko, The Mirage Dolphin Habitat, dablasko@mirage.com

Immediate Past President: Mark Swingle, Virginia Aquarium, mswingle@virginiaaquarium.comVice President: Billy Hurley, Georgia Aquarium, bhurley@georgiaaquarium.org

Treasurer: Bill Hughes, SeaWorld Orlando, bill.hughes@seaworld.comSecretary: Patrick Berry, Disney’s Animal Programs at The Seas, patrick.berry@disney.co

Director-at-Large: Kevin Willis, Minnesota Zoo, kbwillis@aol.comDirector-at-Large: Suzanne Gendron, Ocean Park, suzanne.gendron@oceanpark.com.hk

International Marine Animal Trainers’ Association (IMATA)www.imata.org

c/o John G. Shedd Aquarium, 1200 S. Lake Shore Drive, Chicago, Illinois 60605, USA2011 Board of Directors

President: Michael Osborn, Mystic Aquarium & Institute for Exploration, president@imata.orgPresident-Elect: Shelley Wood, Dolphin Discovery, presidentelect@imata.orgPast President: Dave Roberts, SeaWorld San Diego, pastpresident@imata.org

Secretary: Laura Yeates, National Marine Mammal Foundation, secretary@imata.orgTreasurer: Patty Schilling, New England Aquarium, treasurer@imata.orgFirst Vice President: Bill Wolden, Dolphin Quest, Inc., firstvp@imata.org

Second Vice President: Grant Abel, Ocean Park Hong Kong, secondvp@imata.orgThird Vice President: Michele Sousa, Aquarium of the Pacific, thirdvp@imata.orgDirector-at-Large: Chris Davis, A to Z Animal Management, director@imata.org

For subscriptions, instructions to authors, abstracts of previous issues, publication fees, hard copies, back issues, CDs, and Historical Perspectives DVDs, see the Aquatic Mammals website:

www.aquaticmammalsjournal.org

For details about the online versions of Aquatic Mammals, see the following websites:Aquatic Mammals: www.aquaticmammalsjournal.org

ProQuest: www.proquest.com (specific to library subscribers)