Results 41 to 50 of about 1,836 (127)

Utility of telomere length measurements for age determination of humpback whales

NAMMCO Scientific Publications, 2014
This study examines the applicability of telomere length measurements by quantitative PCR as a tool for minimally invasive age determination of free-ranging cetaceans.
Morten Tange Olsen, Jooke Robbins, Martine Bérubé, Mary Beth Rew, Per J Palsbøll   +4 more
doaj   +1 more source

Ocurrencia del “elefante marino del sur” Mirounga leonida Linnaeus, 1758 (Carnivora: Pinnipedia: Phocidae) en la costa de El Salvador

Revista Minerva, 2022
Durante el mes de enero de 2021, se tuvo la visita de un “elefante marino del sur” Mirounga leonida [Linnaeus, 1758] en la costa de El Salvador, Océano Pacífico centroamericano, específicamente se observó en la zona occidental entre 15 y 16 de enero en ...
Wilfredo A. López, Roxana Margarita López Martínez, Raúl Ernesto López, Elba Martínez de Navas, Luis Pineda, Melvin Giovanni Castaneda   +5 more
doaj   +1 more source

Time‐stressed Bar‐tailed Godwits exploit novel prey during migratory fuelling

Ibis, EarlyView.
Long‐distance migratory birds breeding in the Arctic face challenges as earlier snowmelt shifts the timing of vital resources. To keep up with these advancements, birds will need to modify their migration. Higher fuelling rates during stopover have been identified as a critical mechanism for accelerating migration, but this requires adequate food ...
Hailley Danielson‐Owczynsky, Allert I. Bijleveld, Ran Nathan, Sivan Toledo, Roeland A. Bom   +4 more
wiley   +1 more source

Humpback Highs and Lows Amid Shifting Seas and a Northeast Pacific Marine Heatwave: Whale Demographics in the Main Hawaiian Islands, 2002–2023

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT North Pacific humpback whales are a celebrated conservation success, rebounding from extensive commercial whaling. Yet they remain vulnerable to the impacts of climate change, a multifaceted stressor that can exacerbate existing threats. During 2013–2016, a Northeast Pacific marine heatwave severely reduced forage availability in their feeding
S. M. Barber‐Meyer, T. Cheeseman, J. Barlow, L. Bejder, A. L. Bradford, R. Cartwright, M. Deakos, L. Evans, R. Finn, C. M. Gabriele, B. Goodwin, C. Hayslip, E. E. Henderson, M. Jones, M. Lammers, E. Lyman, D. M. McSwain, J. Mobley, M. Olio, A. A. Pack, D. M. Palacios, H. R. Spears, S. H. Stack, F. A. Sullivan, M. van Aswegen, K. M. Yano, S. Yin, A. Zoidis, J. J. Currie   +28 more
wiley   +1 more source

Migratory destinations and spatial structuring of humpback whales (Megaptera novaeangliae) wintering off Nicaragua

Scientific Reports, 2023
Understanding the migratory patterns of large whales is of conservation importance, especially in identifying threats to specific populations. Migration ecology, including migratory destinations, movements and site fidelity for humpback whales (Megaptera
Joëlle De Weerdt, Aldo S. Pacheco, John Calambokidis, Melvin Castaneda, Ted Cheeseman, Astrid Frisch-Jordán, Frank Garita Alpízar, Craig Hayslip, Pamela Martínez-Loustalot, Daniel M. Palacios, Ester Quintana-Rizzo, Nicola Ransome, Jorge Urbán Ramírez, Phillip Clapham, Tom Van der Stocken   +14 more
doaj   +1 more source

Group‐Specific Variation in Heterodyne Frequencies of Biphonic Calls in Resident (R‐Type) Killer Whales Orcinus orca ater

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Biphonation—the simultaneous production of two independent fundamental frequencies within a single vocalization—is a prominent feature of killer whale calls, yet the factors influencing the presence and intensity of heterodyne frequencies, which arise from interactions between these fundamentals, remain poorly understood. We analyzed long‐term
Vera I. Fedorova, Ilya A. Volodin, Tatiana V. Ivkovich, Elena V. Volodina, Erich Hoyt, Olga A. Filatova   +5 more
wiley   +1 more source

What do humpback whales Megaptera novaeangliae (Cetartiodactyla: Balaenopteridae) pairs do after tagging?

Zoologia (Curitiba), 2014
The social structure of humpback whales in their tropical wintering grounds is very fluid. To date, no information has been published for cases in which two whales were both satellite-tagged while in association.
Artur Andriolo, Alexandre N. Zerbini, Sergio Moreira, José L. Pizzorno, Daniel Danilewicz, Ygor G. Maia, Natália Mamede, Franciele R. de Castro, Phillip Clapham   +8 more
doaj   +1 more source

Humpback Whale Instigates Object Play with a Lion’s Mane Jellyfish

Oceans, 2021
Cetaceans are well-known for their intelligence, charismatic nature, and curiosity. Many species, particularly odontocetes, are known to investigate and manipulate novel objects they encounter.
Brendan D. Shea, Austin J. Gallagher
doaj   +1 more source

Seasonal and Diel Acoustic Occurrence of Sei Whales in Oregon, USA

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The behavior, distribution, and life history of sei whales (Balaenoptera borealis) are largely unknown in the North Pacific. We analyzed data from three bottom‐mounted acoustic recorders deployed 25 (shelf; depth = 300 m), 45 (slope; depth = 630 m), and 65 (abyssal; depth = 2860 m) nautical miles off of Newport, Oregon, USA that recorded ...
Mariam Alsaid, Leigh G. Torres, Holger Klinck, Dimitri Ponirakis, Kathleen M. Stafford, Dawn R. Barlow   +5 more
wiley   +1 more source

Comparing Drone and Vessel‐Based Imaging to Quantify Epibiont Coverage on Humpback Whales

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Cetacean epibionts offer noninvasive insights into host health, physiology, and spatial ecology, yet quantitative assessments in wild populations remain scarce. Although vessel‐based observations may be limited by field of view and analyst input, unoccupied aerial vehicles (UAVs; drones) are increasingly used to monitor cetacean health indices,
Isabel A. R. Taylor, Ticiana Fettermann, Barry McGovern, David S. Schoeman, Adrian B. McCallum, Stephanie H. Stack   +5 more
wiley   +1 more source