Results 51 to 60 of about 1,112 (162)

Correcting Lipid Extraction Effects on Nitrogen Isotopic Values (δ15N) in Cetacean Skin

Marine Mammal Science, Volume 42, Issue 2, April 2026.
ABSTRACT Stable isotopes of carbon (δ13C) and nitrogen (δ15N) are widely used to study the feeding ecology of cetaceans, as they provide critical insights into diet and migratory behaviors. Lipids in tissues may bias the interpretation of δ13C. Because of this, lipids need to be extracted before measuring stable isotope ratios, but their removal may ...
Jory Cabrol, Ève Rioux, Richard Sears, Joanie Van De Walle, Cory J. D. Matthews, Véronique Lesage   +5 more
wiley   +1 more source

Social games that belugas (Delphinapterus leucas) play

International Journal of Play, 2022
Play is an important indicator of physical strength, cognitive functioning, and overall welfare for animals. Performed independently or cooperatively, play provides animals, including humans, opportunities to test and practice various physical abilities, social interactions, and object investigations. One area that is often overlooked in animal play is
Heather M. Manitzas Hill, Nicole Ortiz, Katie Kolodziej, Jackson R. Ham   +3 more
openaire   +1 more source

From Participation to Management: Coconstructing Sustainable Practices in the Saint Lawrence Beluga Habitat

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 3, March 2026.
ABSTRACT The Saint Lawrence Beluga population (Delphinapterus leucas), classified as an endangered species since 2014, continues to decline despite various recovery efforts. A growing concern is the impact of recreational boating on this population. Although the stress caused by boat noise and presence is well documented, the regulation and management ...
Maud Thermes, Irène Abi‐Zeid, Arnaud Sentis, Franck Taillandier, Nathalie Niquil   +4 more
wiley   +1 more source

Validation of aerial photogrammetry methods to measure body size, condition and mass in small cetaceans

The Journal of Physiology, Volume 604, Issue 5, Page 1788-1808, 1 March 2026.
Abstract figure legend Unoccupied aerial vehicle (UAV)‐based photogrammetry provides measurements equivalent to traditional hand measurements in bottlenose dolphins. Mass estimates derived from UAV measurements closely match the true body mass of live individuals.
Riccardo Cicciarella, Erik P. Willems, Benjamin Markham, Manuela R. Bizzozzero, Wayne Phillips, Simon J. Allen, Michael Krützen, Fredrik Christiansen   +7 more
wiley   +1 more source

Larger body size leads to greater female beluga whale ovarian reproductive activity at the southern periphery of their range

Ecology and Evolution, 2021
Identification of phenotypic characteristics in reproductively successful individuals provides important insights into the evolutionary processes that cause range shifts due to environmental change.
Steven H. Ferguson, David J. Yurkowski, Justine M. Hudson, Tera Edkins, Cornelia Willing, Cortney A. Watt   +5 more
doaj   +1 more source

Climate Change, Local Harvests and Marine Contamination: A Perspective on Cetacean Populations and Coastal Whaling Communities

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT Cetaceans are indicators of ocean health, influence marine ecosystem dynamics and hold socio‐economic importance for coastal whaling communities. Yet whale–whaler relationships remain poorly understood and are increasingly compromised under the triple planetary crisis of climate change, biodiversity loss and pollution. Here, we briefly outline
Melissa A. McKinney, Jeremy J. Kiszka
wiley   +1 more source

Skin Cortisol and Acoustic Activity: Potential Tools to Evaluate Stress and Welfare in Captive Cetaceans

Animals, 2023
As people’s focus broadens from animals on farms to zoos and aquaria, the field of welfare science and the public’s concern for animal welfare continue to grow.
Chung-Hei Wong, Ming-An Tsai, Fung-Chi Ko, Jiann-Hsiung Wang, Yi-Jing Xue, Wei-Cheng Yang   +5 more
doaj   +1 more source

Vocalization Characteristics of the Indo‐Pacific Humpback Dolphins (Sousa chinensis) in Xiamen Bay With Insights on Regional Differences

Ecology and Evolution, Volume 16, Issue 2, February 2026.
The Indo‐Pacific humpback dolphin population in Xiamen Bay was divided into two geographically separated but socially associated communities inhabiting the West and East sub‐regions. Based on 3 years of boat‐based surveys, this study established baseline acoustic characteristics and investigated whether vocal patterns varied with habitat conditions ...
Xuming Peng, Zhiyuan Hua, Fuxing Wu, Fei Zhang, Weijie Fu, Yupeng Li, Chuang Zhang, Wenzhan Ou, Wenjie Xiang, Bing Zhou, Zhongchang Song, Yu Zhang   +11 more
wiley   +1 more source

Feces DNA analyses track the rehabilitation of a free-ranging beluga whale

Scientific Reports, 2022
Following the sudden appearance, and subsequent efforts to support the survival of a beluga whale (Delphinapterus leucas) speculated to have been previously trained off the coast of Norway, we investigate the animal’s ability to readapt to life in the ...
Babett Günther, Eve Jourdain, Lindsay Rubincam, Richard Karoliussen, Sam L. Cox, Sophie Arnaud Haond   +5 more
doaj   +1 more source

Partner Choice and Context‐Dependent Sex Differences in Rat Rough‐and‐Tumble Play

European Journal of Neuroscience, Volume 63, Issue 3, February 2026.
When given partner choice in triadic play, male rats showed a robust preference for female partners, whereas females formed partner preferences that were not sex specific. Females initiated less play in mixed‐sex groups but played at male‐typical levels in all‐female groups, demonstrating that sex differences in rough‐and‐tumble play arise both from ...
Jackson R. Ham, Sergio M. Pellis, Robert J. McDonald   +2 more
wiley   +1 more source