Dolphin thyroid and adrenal hormones: Circulating levels in wild and semidomesticated
Tursiops truncatus, and influence of sex, age, and season.
D. J. ST. AUBIN, S. H. RIDGWAY, R. W. WELLS AND H. RHINEHART ..............................l

A cetacean biopsy system using lightweight pneumatic darts, and its effect on the behavior
of killer whales.
LANCE G. BARRETT-LENNARD, TOM G. SMITH AND GRAEME M. ELLIS ..................14

Relationships among morphological status, steroid hormones, and post-thawing viability
of frozen spermatazoa of male minke whales (Balaenoptera acutorostrata).
Y. FUKUI, T. MOGOE, Y. G. JUNG, Y. TERAWAKI, A. MIYAMOTO,
H. ISHIKAWA, Y. FUJISE AND S. OHSUMI .......................................................................28

Potential impact of oil spills on California sea otters: Implications of the Exxon Valdez spill
in Alaska.
ALLAN J. BRODY, KATHERINE RALLS AND DONALD B. SINIFF ................................38

Age determination in manatees using growth-layer-group counts in bone.
MIRIAM MARMONTEL, THOMAS J. O'SHEA, HOWARD I. KOCHMAN
AND STEPHEN R. HUMPHREY ............................................................................................54

Isolation and characterization of a cDNA encoding interleukin 2 from the Florida manatee,
Tricbechus manatus latirostris.
MARY E. CASHMAN, TRACI L. NESS, WILLIAM B. ROESS, W. GUY BRADLEY
AND JOHN E. REYNOLDS, III ..............................................................................................89

Plasma vasopressin levels and water conservation in fasting, post- weaned northern
elephant seal pups (Mirounga angustirostris).
RUDY M. ORTIZ, SEAN H. ADAMS, DANIEL P. COSTA AND C. LEO ORTIZ ...............99

"Pushy" behavior in a wild dolphin feeding program at Tangalooma, Australia.
MARK B. ORAMS, GREG J. E. HILL AND ANTHONY J. BAGLIONI, JR. ......................107

NOTES

The bufeo (Inia geoffrensis) in the Rio Lagarto Cocha of the Ecuadorian Amazon.
LOUIS M. HERMAN, LORENZO VON FERSEN AND MOBISHER SOLANGI ..............118

Strandings of striped dolphins (Stenella coeruleoalba) in Iceland and the Faroe Islands
and sightings in the northeast Atlantic, north of 50 N latitude.
DORETE BLOCH, GENEVIEVE DESPORTES, IVAR PETERSEN
AND JOHANN SIGURJONSSON .......................................................................................125

First account of a humpback whale (Megaptera novaeangliae) in Texas waters,
with a re-evaluation of historical records from the Gulf of Mexico.
DAVID W. WELLER, ANDREW J. SCHIRO, VICTOR G. COCKCROFT
AND WANG DING ...............................................................................................................133

Site fidelity and dispersion of southern elephant seals from Patagonia.
MIRTHA LEWIS, CLAUDIO CAMPAGNA AND FLAVIO QUINTANA ..........................138

Grooming in a captive Guadalupe fur seal.
HILARY N. FELDMAN AND KRISTIE M. PARROTT .......................................................147

Report of a sea otter, Enhydra lutris, off the coast of Isla Magdalena, Baja California Sur,
Mexico.
MA. DEL CARMEN RODRIGUEZ-JARAMILLO AND DIANE GENDRON .....................153

BOOKS

Reviews ...................................................................................................................................157

CRC Handbook of Marine Mammal Medicine: Health, Disease, and Rehabilitation.
Leslie A. Dieruaf, ed. 1990, CRC Press, Boca Raton, Florida.
Reviewed by Craig A. Harms.

LETTERS

Scientific Correspondence ........................................................................................................161

NEWS ....................................................................................................................................162

GUIDE FOR AUTHORS .......................................................................................................163

Summer feeding habits of Dall's porpoise, Phocoenoides dalli, in the southern
Sea of Okhotsk.
WILLIAM A. WALKER ........................................................................................................167

Analysis of corpora lutea to estimate reproductive cycles of wild Hawaiian
monk seals (Monachus schauinslandi).
M. IWASA AND S. ATKINSON ..........................................................................................182

Life history of Fraser's dolphin, Lagenodelphis hosei, based on a school
captured off the Pacific coast of Japan.
MASAO AMANO, NOBUYUKI MIYAZAKI
AND FUMIO YANAGISAWA .............................................................................................199

Interchange and isolation of humpback whales off California and other North
Pacific feeding grounds.
JOHN CALAMBOKIDIS, GRETCHEN H. STEIGER,
JOSEPH R. EVENSON, KIRSTEN R. FLYNN,
KENNETH C. BALCOMB, DIANE E. CLARIDGE,
PRENTICE BLOEDEL, JANICE M. STRALEY, C. SCOTT BAKER,
OLGA VON ZIEGESAR, MARILYN E. DAHLHEIM,
JANICE M. WAITE, JAMES D. DARLING, GRAEME ELLIS
AND GREGORY A. GREEN ................................................................................................215

Classification of Weddell seal diving behavior.
JASON F. SCHREER AND J. WARD TESTA ......................................................................227

Understanding and interpreting hematocrit measurements in pinnipeds.
J. M. CASTELLINI, H. J. MEISELMAN AND M. A. CASTELLINI ....................................251

Plasma progesterone concentrations measured using an enzyme-linked
immunosorbent assay useful for diagnosing pregnancy in harbor seals
(Phoca vitulina).
K. J. GARDINER, I. L. BOYD, P. A. RACEY, P. J. H. REIJNDERS
AND P. M. THOMPSON ......................................................................................................265

NOTES

Cutaneous papillomaviral-like papillomatosis in a killer whale (Orcinus orca).
GREGORY D. BOSSART, CAROLYN CRAY,
JOSE LUIS SOLORZANO, SUSAN J. DECKER, LANNY H. CORNELL
AND NORMAN H. ALTMAN .............................................................................................274

Movement of a humpback whale (Megaptera novaeangliae) from Japan to British
Columbia and return.
J. D. DARLING, J. CALAMBOKIDIS,
K. C. BALCOMB, P. BLOEDEL, K. FLYNN, A. MOCHIZUKI, K. MORI,
E. SATO, H. SUGANUMA AND M. YAMAGUCHI ...........................................................281

Underwater sounds of blue whales, Balaenoptera musculus, in the Gulf of California, Mexico.
PAUL O. THOMPSON, LLOYD T. FINDLEY, OMAR VIDAL
AND WILLIAM C. CUMMINGS .........................................................................................288

Abandonment of an entangled conspecific by Atlantic white-sided dolphins
(Lagenorhynchus acutus).
MASON WEINRICH ............................................................................................................293

Endocrinological observations of female minke whales (Balaenoptera acutorostrata).
K. IGA, Y. FUKUI, A. MIYAMOTO, H. ISHIKAWA AND S. OHSUMI ...........................296

A possible case of hybridism in wild dolphins.
JUNO C. REYES ...................................................................................................................301

A stranded melon-headed whale, Peponocephala electra, in south-eastern Brazil,
with comments on wounds from the cookiecutter shark, Isistius brasiliensis.
JOAO LUIZ GASPARINI AND IVAN SAZIMA ...................................................................308

Composition and energy content of milk from southern sea lions (Otaria flavescens).
RODOLFO WERNER, ANA-LUISA FIGUEROA-CARRANZA
AND CHARLES L. ORTIZ ....................................................................................................313

Size and weight of Guadalupe fur seals.
JUAN-PABLO GALLO-REYNOSO AND ANA-LUISA FIGUEROA- CARRANZA .........318

Effect of pool features on the behavior of two bottlenose dolphins.
M. KIM BASSOS AND RANDALL S. WELLS ...................................................................321

BOOKS

Reviews ...................................................................................................................................325

On Behavior: Essays and Research. K. Pryor. Sunshine Books, North Bend, WA.
Reviewed by Alana V. Phillips.

Contributions in Marine Mammal Paleontology Honoring Frank C. Whitmore, Jr.
A. Berta and T. Demer‚ eds. Proceedings of the San Diego Society of Natural
History, San Diego, CA.
Reviewed by John E. Heyning.

MEMORIES

Howard Elliott Winn ................................................................................................................330

NEWS ....................................................................................................................................333

Assessment of heterogeneity in sighting probabilities of humpback whales within viewing
range of Cape Vidal, South Africa.
K. P. FINDLAY AND P. B. BEST .........................................................................................335

Estimates of the numbers of humpback whales observed migrating past Cape Vidal,
South Africa, 1988-1991.
K. P. FINDLAY AND P. B. BEST .........................................................................................354

Epidemiology of poxvirus in small cetaceans from the eastern South Pacific.
MARIE-FRAN€OISE VAN BRESSEM AND KOEN VAN WAEREBEEK ........................371

Counts of growth layer groups in cementum and dentine in ringed seals (Phoca hispida).
ROBERT E. A. STEWART, BARBARA E. STEWART, IAN STIRLING
AND ELAINE STREET .........................................................................................................383

Genetic substructure of the Pacific harbor seal (Phoca vitulina richardsi) off Washington,
Oregon, and California.
MARGARET M. LAMONT, J. T. VIDA, JAMES T. HARVEY, STEVEN JEFFRIES,
ROBIN BROWN, HARRIET H. HUBER, ROBERT DELONG
AND W. KELLEY THOMAS ...............................................................................................402

Behavioral significance of underwater vocalizations of captive leopard seals, Hydrurga leptonyx.
T. L. ROGERS, DOUGLAS H. CATO AND M. M. BRYDEN .............................................414

NOTES

Using annual approximations of birth rate in models for species with multiannual
reproductive cycles.
J. WARD TESTA ...................................................................................................................428

Cetaceans of the Cape Verde archipelago.
FRANCISCO REINER, MANUEL E. DOS SANTOS AND FREDERICK W. WENZEL ...434

On the specimen of the ginkgo-toothed beaked whale, Mesoplodon ginkgodens, from the
Galapagos Islands.
DANIEL M. PALACIOS .......................................................................................................444

Stability of fluke marks used in individual photoidentification of male sperm whales at
Kaikoura, New Zealand.
S. J. CHILDERHOUSE AND S. M. DAWSON ....................................................................447

Interactions between cetaceans and longline fishery operations around South Georgia.
J. R. ASHFORD, P. S. RUBILAR AND A. R. MARTIN .......................................................452

Fastest documented migration of a North Pacific humpback whale.
CHRISTINE M. GABRIELE, JANICE M. STRALEY, LOUIS M. HERMAN
AND RICHARD J. COLEMAN .............................................................................................457

A device for data retrieval and recapture of diving animals in open water.
EUENE A. BARANOV ..........................................................................................................465

Violent interspecific sexual behavior by male sea lions (Otariidae): Evolutionary
and phylogenetic implications.
EDWARD H. MILLER, ALBERTO PONCE DE LEON AND ROBERT L. DELONG .........468

Age estimation of grey seals (Halichoerus grypus) using incisors.
KAREN E. BERNT, MIKE O. HAMMILL AND KIT M. KOVACS ....................................476

Extreme temporal variation in harbor seal (Phoca vitulina richardsi) numbers in Glacier Bay,
a glacial fjord in southeast Alaska.
ELIZABETH A. MATTHEWS AND BRENDAN P. KELLY ................................................483

Aerial behavior in fin whales (Balaenoptera physalus) in the Mediterranean Sea.
LUCA MARINI, CARLO CONSIGLIO, BARBARA CATALANO,
TIZIANA VALENTINI AND GERMANA VILLETTI.......................................................... 489

LETTERS

Scientific Correspondence ........................................................................................................496

MEMORIES

Deaths Reported ......................................................................................................................498

Morbillivirus infection in bottlenose dolphins: Evidence for recurrent epizootics in the western
Atlantic and Gulf of Mexico.
PADRAIG J. DUIGNAN, CAROL HOUSE, DANIEL K. ODELL,
RANDALL S. WELLS, LARRY J. HANSEN, MICHAEL T. WALSH,
DAVID J. ST. AUBIN, BERT K. RIMA AND JOSEPH R. GERACI ....................................499

Geographical variation in metric skull characters among proposed subpopulations
and stocks of harbor porpoise, Phocoena phocoena, in the western North Atlantic.
ANLI GAO AND D. E. GASKIN ..........................................................................................516

Seasonal movements and dive patterns of juvenile Baikal seals, Phoca sibirica.
BRENT S. STEWART, EUGENE A. PETROV, E. A. BARANOV, A. TIMONIN
AND M. IVANOV .................................................................................................................528

Variability in antarctic fur seal dive data: Implications for TDR studies.
PETER L. BOVENG, BRIAN G. WALKER AND JOHN L. BENGTSON ...........................543

The use of stable carbon isotope analysis for determining the dietary habits
of the Florida manatee, Trichechus manatus latirostris.
AUDRA L. AMES, EDWARD S. VAN VLEET AND WILLIAM M. SACKETT .................555

NOTES

Fin whale tracked by satellite off Iceland.
WILLIAM A. WATKINS, JOHANN SIGURJONSSON, DOUGLAS WARTZOK,
ROMAINE R. MAIEFSKI, PAUL W. HOWEY AND MARY ANN DAHER ......................564

Diving behavior and at-sea movements of an Atlantic spotted dolphin in the Gulf of Mexico
RANDALL W. DAVIS, GRAHAM A. J. WORTHY, BERND WURSIG,
SPENCER K. LYNN AND FORREST I. TOWNSEND .......................................................569

Attack by false killer whales (Pseudorca crassidens) on sperm whales
(Physeter macrocephalus) in the Galapagos Islands.
DANIEL M. PALACIOS AND BRUCE R. MATE ................................................................582

Observations of an interaction between sperm whales and short finned pilot whales in the
Gulf of Mexico.
DAVID W. WELLER, BERND WURSIG, HAL WHITEHEAD, JEFFREY C. NORRIS,
SPENCER K. LYNN, RANDALL W. DAVIS, NATHALIE CLAUSS
AND PATRICIA BROWN ....................................................................................................588

A sighting of a large school of the pygmy right whale, Caperea marginata, in the Southeast
Indian Ocean.
KOJI MATSUOKA, YOSHIHIRO FUJISE AND LUIS A. PASTENE .................................594

Changes in surfacing patterns of bottlenose dolphins in response to boat traffic.
VINCENT M. JANIK AND PAUL M. THOMPSON ...........................................................597

Approach by great white shark elicits flight response in bottlenose dolphins.
RICHARD C. CONNOR AND MICHAEL R. HEITHAUS ...................................................602

A report of killer whales (Orcinus orca) feeding on a carcharhinid shark in Costa Rica.
DAGMAR FERTL, ALEJANDRO ACEVEDO-GUTIERREZ AND FORBES L. DARBY ...606

Underwater vocalizations of Ladoga ringed seals (Phoca hispida ladogensis Nordq.)
in summertime.
MERVI KUNNASRANTA, HEIKKI HYVŽRINEN AND JORMA SORJONEN ...............611

Deprivation indicates necessity for haul-out in harbor seals.
SOPHIE BRASSEUR, JEROEN CREUWELS, BERT V/D WERF
AND PETER REIJNDERS .....................................................................................................619

A record of the subantarctic fur seal, Arctocephalus tropicalis, from Madagascar, Indian Ocean.
CLAIRE GARRIGUE AND GRAHAM ROSS .......................................................................624

Die-offs of marine mammals and sea birds in the Gulf of California, Mexico.
OMAR VIDAL AND JUAN-PABLO GALLO-REYNOSO ..................................................627

Seasonal changes in energy density of prey of Northeast Atlantic seals and whales.
P.-E. MARTENSSON, A. K. LAGER GOTAAS, E. S. NORDOY AND A. S. BLIX ...........635

BUSINESS .............................................................................................................................641

MEMORIES

Deaths Reported .....................................................................................................................646

INDEX ...................................................................................................................................647