Aquatic Mammals Aquatic Aquatic Mammals, Volume 40, Number 1, 2014 ISSN 0167-5427 Contents Letters from the Editors .................................................................... 1 Aquatic P. Zhang, J. Han, Z. Lu, & R. Chen: Molecular Evidence of a Captive-Born Intergeneric Hybridization Between Bottlenose and Risso’s Dolphins: Tursiops truncatus × Grampus griseus .......... 5 J. W. Higdon & S. H. Ferguson: Inuit Recollections of a 1950s Killer Whale (Orcinus orca) Ice Entrapment in Foxe Basin, Nunavut, Canada ................................................ 9 Mammals M. S. Lowry, R. Condit, B. Hatfield, S. G. Allen, R. Berger, P. A. Morris, B. J. Le Boeuf, & J. Reiter: Abundance, Distribution, and Population Growth of the Northern Elephant Seal (Mirounga angustirostris) in the United States from 1991 to 2010.................................. 20 M. A. Smultea & T. A. Jefferson: Changes in Relative Occurrence of Cetaceans in the Southern California Bight: A Comparison of Recent Aerial Survey Results with Historical Data Sources........... 32 A. M. Zoidis, K. S. Lomac-MacNair, A. E. Chomos-Betz, A. J. Day, & A. S. McFarland: Effects of Sex, Seasonal Period, and Sea State on Calf Behavior in Hawaiian Humpback Whales (Megaptera novaeangliae)................................................................. 44 R. Carlini, M. C. de Francesco, & S. D. Libera: Biometric Measures Indicating Sexual Dimorphism in Stenella coeruleoalba (Meyen, 1833) (Delphinidae) in the North-Central Tyrrhenian Sea ............. 59 J. M. Kleen & A. D. Breland: Increases in Seasonal Manatee (Trichechus manatus latirostris) Abundance Within Citrus County, Florida..................................................... 69 C. Kovacs & T. Cox: Quantification of Interactions Between Common Bottlenose Dolphins (Tursiops truncatus) and a Commercial Shrimp Trawler Near Savannah, Georgia ..................... 81 E. Mercado III: Tubercles: What Sense Is There? ............................................... 95 Historical Perspectives Karen Pryor: A Dolphin Journey ........................................................... 104 Aquatic Mammals Aquatic 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. Supported through Joint Sponsorship by the Copyright and Editor: Aquatic Mammals Journal, attn: Kathleen M. Dudzinski European Association for Aquatic Mammals, Co-Editors: Shane B. Kanatous, David A. S. Rosen, Deirdre Yeater, and Elizabeth Henderson the Alliance of Marine Mammal Parks and Aquariums, P.O. Box 711, Old Mystic, CT 06372-0711, USA 40, N Volume and the International Marine Animal Trainers’ Association Prepared and published by Document and Publication Services, Western Illinois University, Macomb, IL 61455, USA Founded by EAAM in 1974 umber 1, 2014 YEARS 41974-2014 Established by the EAAM in 1974 Aquatic Mammals Aquatic Mammals Board of the European Association for Aquatic Mammals (EAAM) www.eaam.org The European Association for Aquatic Mammals (EAAM), the Alliance of Marine Mammal Parks President: Jesús Fernández Morán, Zoo Aquarium Madrid, Parques Reunidos, S.A., and Aquariums (AMMPA), and the International Marine Animal Trainers’ Association (IMATA) [email protected] jointly sponsor Aquatic Mammals (ISSN 0167-5427), published four times per year. President-Elect: Arlete Sogorb, Lisbon Zoo, [email protected] Past President: Claudia Gili, Acquario di Genova, past_ [email protected] Managing Editor Secretary: Camino Herreros Paris, Dolfinarium Harderwijk, [email protected] Kathleen M. Dudzinski, Ph.D. Treasurer: Camino Herreros Paris, Dolfinarium Harderwijk, [email protected] P.O. Box 711, Old Mystic, Connecticut 06372-0711, USA Information Committee: Dani Barchana and Ann-Louise Jensen, [email protected] E-mail: [email protected] or [email protected], Tel: +1 (860) 514-4704 Alliance of Marine Mammal Parks and Aquariums (AMMPA) Co-Editors www.ammpa.org Shane B. Kanatous, Ph.D., Department of Biology, Colorado State University Executive Director: Kathleen Dezio E-mail: [email protected] E-mail: [email protected] David A. S. Rosen, Ph.D., Marine Mammal Research Unit, University of British Columbia Board of Directors E-mail: [email protected] President: Billy Hurley, Georgia Aquarium, [email protected] Immediate Past President: Dave Blasko, The Mirage Dolphin Habitat, [email protected] Deirdre Yeater, Ph.D., Sacred Heart University Past President: Mark Swingle, Virginia Aquarium and Marine Science Center Foundation, E-mail: [email protected] [email protected] Elizabeth Henderson, Ph.D., National Marine Mammal Foundation, San Diego, California Vice President: Kevin Willis, Minnesota Zoo, [email protected] E-mail: [email protected] Treasurer: Bill Hughes, SeaWorld Orlando, [email protected] Secretary: Suzanne Gendron, Ocean Park, [email protected] Book Review Editor Director-at-Large: Stewart Clark, Discovery Cove, [email protected] MaryEllen Mateleska, Mystic Aquarium Director-at-Large: Rita Irwin, Dolphin Research Center, [email protected] E-mail: [email protected] Editors Emeriti International Marine Animal Trainers’ Association (IMATA) Willem H. Dudok van Heel, Victor J. A. Manton, Paul E. Nachtigall, Jeanette A. Thomas www.imata.org c/o John G. Shedd Aquarium, 1200 S. Lake Shore Drive, Chicago, Illinois 60605, USA Editorial Board Board of Directors Arne Bjørge, Institute of Marine Research, Gaustadalleen 21, 0349 Oslo, Norway President: Bill Wolden, Dolphin Quest, [email protected] Manuel E. dos Santos, Instituto Superior de Psicologia Aplicada, Lisboa, Portugal President-Elect: Linda Erb, Dolphin Research Center, [email protected] Manuel García Hartmann, Marineland Antibes, France Past President: Eric Gaglione, Georgia Aquarium, [email protected] Heidi Harley, Division of Social Sciences, New College of Florida, Sarasota, Florida, USA Secretary: Alex Mata, Dolphin Discovery, [email protected] A. Rus Hoelzel, School of Biological and Biomedical Sciences, University of Durham, Durham, UK Treasurer: Robert Roozendall, Six Flags Discovery Kingdom, [email protected] Christina Lockyer, North Atlantic Marine Mammal Commission, Tromsø, Norway First Vice President: Kelly Flaherty Clark, SeaWorld Orlando, [email protected] Lee A. Miller, Institute of Biology, University of Southern Denmark, Odense, Denmark Second Vice President: Teri Corbett, Atlantis, [email protected] Paul E. Nachtigall, Hawaii Institute of Marine Biology, Kailua, Hawaii, USA Third Vice President: Suzanne Smith, Audubon Aquarium of the Americas, [email protected] Giuseppe Notarbartolo di Sciara, Tethys Research Institute, Milano, Italy Director-at-Large (Past Secretary): Jennifer Leach, SeaWorld San Diego, [email protected] Dan Odell, Hubbs-Sea World Research Institute, Orlando, Florida, USA Grey Stafford, Wildlife World Zoo, Litchfield Park, Arizona, USA 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: Publication and Administrative Services www.aquaticmammalsjournal.org Document and Publication Services (DPS), Western Illinois University, Macomb, Illinois 61455, USA For details about the online versions of Aquatic Mammals, see the following websites: Cover Photo Credit Aquatic Mammals: www.aquaticmammalsjournal.org In celebration of Aquatic Mammals’ 40th anniversary, several past covers were selected ProQuest: www.proquest.com (specific to library subscribers) to give a sample of the types of subjects focused on in the journal..