Results 71 to 80 of about 572 (155)

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

A Case For Killing Humpback Whales?

Nature Precedings, 2007
AbstractDuring the austral summer of 2007/08, hunting of Southern Hemisphere (SH) humpback whales will recommence after almost half a century of protection. The stated rationale for this hunt, by the Government of Japan (GoJ), is to gather important scientific information for use in management. If the scientific need were defensible, and the proponents
Nicholas J. Gales, Phillip J. Clapham, C. Scott Baker   +2 more
openaire   +2 more sources

Description, Detection, and Classification of Hawaiian Monk Seal Vocalizations Through Deep‐Learning Methods: Biological and Conservation Applications

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The Hawaiian monk seal is a phocid Carnivore endemic to the Hawaiian Archipelago. This species was thought to be silent under water until the recent discovery that mature males produce at least six distinct calls year round, typically in bouts of two or more, with sound production linked to reproductive status.
Jeppe Have Rasmussen, Jillian M. Sills, Kirby Parnell, Colleen Reichmuth   +3 more
wiley   +1 more source

An Alternative Approach to Studying Humpback Whale Song Changes Over Time Using Occupancy Models

Marine Mammal Science, Volume 42, Issue 4, October 2026.
Franny Oppenheimer, Therese Donovan, James Hines, Kristin Rasmussen, Laura J. May‐Collado   +4 more
wiley   +1 more source

Respiration Patterns of Southern Right Whale (Eubalaena australis) Mothers and Calves in Southern Brazil

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Respiration is a key physiological process in cetaceans, closely linked to energy expenditure, behavior, and physiological state. Using drone‐based surveys, we quantified respiration patterns of southern right whale (Eubalaena australis) mother–calf pairs in southern Brazil across two reproductive seasons (2020–2021).
Jéssica Karasek, Daniel Danilewicz, Ticiana Fettermann, Carla Cavassani, Lucas Lima de Oliveira, Yvonnick Le Pendu   +5 more
wiley   +1 more source

Beyond Rare: Documenting Albino‐Like Phenotypes as a Recurring Trait in the Juan Fernandez Fur Seal

Marine Mammal Science, Volume 42, Issue 4, October 2026.
Constanza Toro‐Valdivieso, Renato Borras‐Chavez, Víctor Castillo‐González, Luciano Hiriart‐Bertrand, Michael E. Goebel, Barbara Blacklaws   +5 more
wiley   +1 more source

Using Aerial Photogrammetry to Estimate Body Condition and Assess Sexual Dimorphism in Narwhals

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The Arctic is warming rapidly, impacting ice‐dependent species and communities that rely on them for resources. Body condition indices (BCI) are widely used to assess individual health within populations. We adapted the methodology to improve accessibility for estimating narwhal body condition from drone footage, using body length, body width,
Kirsten J. Désorcy, Jane M. Waterman, Courtney R. Shuert, James D. Roth, Marianne Marcoux   +4 more
wiley   +1 more source

Application of DNA Methylation–Based Age Estimation to Construct an Age Structure of Humpback Whales in a Newly Emerged Wintering Ground Around Hachijojima Island, Tokyo Metropolis, Japan

Ecology and Evolution
Using a noninvasive DNA methylation (DNAm)–based age estimation method, we investigate the age structure of humpback whales that newly emerged around Hachijojima Island, Tokyo Metropolis, Japan to uncover the role of this area for this species.
Kohei Igarashi, Atsushi Tanabe, Hiroeki Sahara, Reiko Nozaki, Hidehiro Kondo, Taiki Katsumata, Shingo Tamura, Tadashi Yamakoshi, Mizuki Mori, Marin Miyagi, Gen Nakamura, Naohisa Kanda, Hiroto Murase   +12 more
doaj   +1 more source

Characterizing Habitat Suitability of Long‐Finned Pilot Whales in a Key Conservation Region of the Southern Iberian Peninsula Using Satellite Tracking Data

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The waters surrounding the southern Iberian Peninsula are a key conservation area for the long‐finned pilot whale (Globicephala melas melas), particularly in the pelagic regions of the Strait of Gibraltar, the Alboran Sea, and the Gulf of Vera, where upwelling, complex bathymetry and frontal dynamics enhance productivity and prey availability,
Jazel Ouled‐Cheikh, Edgard Ballesta, David March, Pedro García, Philippe Verborgh, Renaud de Stephanis, Joan Giménez   +6 more
wiley   +1 more source

Humpback whale genomes reflect the increased efficiency of commercial whaling

Science Advances
Genetic diversity is declining globally, a trend that may particularly affect exploited populations that must adapt to rapid environmental change and other threats. Estimated genomic changes in effective population size mirrored known whaling history and shifts in technology.
Fabricio Furni, Martine Bérubé, Marcos Suárez-Menéndez, Eduardo R. Secchi, Randall R. Reeves, Jooke Robbins, Camilla F. Speller, Per J. Palsbøll   +7 more
openaire   +5 more sources