Results 41 to 50 of about 15,567 (163)

Tracking Wintertime Behaviour of Emperor Penguins Using High‐Resolution Synthetic Aperture Radar Imagery

Remote Sensing in Ecology and Conservation, EarlyView.
Using 25–30 cm Umbra synthetic aperture radar (SAR) imagery combined with ground validation of our observations, we introduce a method to track the phenology of emperor penguins during the Antarctic winter. We successfully identified events in the breeding cycle, which were previously impossible to observe during the complete darkness of Antarctic ...
Michelle LaRue, Daniel Price, Sarah Wiki‐Bennett, Charles K. Lee, B. Jack Pan, Kyle McCloud, Heather Cruickshank, Alex Ponniah, Daniel Zitterbart, Alexander Winterl, Céline Le Bohec, Rose Foster‐Dyer, Peter Fretwell   +12 more
wiley   +1 more source

(Table 2) Metric traits of skull size, and sexual dimorphism in East Greenland and Svalbard polar bears (Ursus maritimus)

, 2008
(Table 2) Metric traits of skull size, and sexual dimorphism in East Greenland and Svalbard polar bears (Ursus ...
Thea Ø Bechshøft (7995704), Bechshøft, Thea Ø, Rigét, Frank F, Øystein Wiig (7995425), Sonne, Christian, Rune Dietz (6981611), Wiig, Øystein, Dietz, Rune, Christian Sonne (6981602), Frank F Rigét (6982187)   +9 more
core   +1 more source

Updating the forelimb anatomy of the domestic cat (Felis catus, Felidae) based on evolutionary inferences of its muscles and nerves I: Shoulder and brachium

Journal of Anatomy, EarlyView.
In this study, we provide a detailed description of the shoulder and brachium muscles and the brachial plexus of the domestic cat (Felis catus). We identified muscular variants (articularis humeri, coracobrachialis longus, biceps brachii caput breve), clarified the independence of the anconeus medialis muscle from the triceps brachii muscle, and ...
Juan Fernando Vélez García, Ismael Vélez Cabrera, Maria Angelica Miglino   +2 more
wiley   +1 more source

(Table 3) Stable nitrogen and carbon isotope ratios, and mercury content in teeth of polar bears (Ursus maritimus)

, 2012
(Table 3) Stable nitrogen and carbon isotope ratios, and mercury content in teeth of polar bears (Ursus ...
Florence Caurant (3283647), Caurant, Florence, Rigét, Frank F, Øystein Wiig (7995425), Sonne, Christian, Aurore Aubail (7995521), Rune Dietz (6981611), Wiig, Øystein, Dietz, Rune, Aubail, Aurore, Christian Sonne (6981602), Frank F Rigét (6982187)   +11 more
core   +1 more source

Integrating cryobanks into conservation frameworks: The case of boreal caribou in Ontario

Conservation Science and Practice, Volume 8, Issue 10, October 2026.
Conservation cryobanks are a powerful but underutilized complement to conventional recovery strategies such as habitat protection and population monitoring. Here, we present a transferable, stepwise framework for integrating cryobanking into formal species recovery plans, including guidance on population prioritization, partner engagement, and the ...
Vanessa E. Luzuriaga‐Aveiga, Gregory A. Wilson, Gabriela F. Mastromonaco   +2 more
wiley   +1 more source

(Table 4) Time of attainment of full size (95% asymptotic length) of skull traits in East Greenland and Svalbard polar bears (Ursus maritimus)

, 2008
(Table 4) Time of attainment of full size (95% asymptotic length) of skull traits in East Greenland and Svalbard polar bears (Ursus ...
Thea Ø Bechshøft (7995704), Bechshøft, Thea Ø, Rigét, Frank F, Øystein Wiig (7995425), Sonne, Christian, Rune Dietz (6981611), Wiig, Øystein, Dietz, Rune, Christian Sonne (6981602), Frank F Rigét (6982187)   +9 more
core   +1 more source

Linking the Movement Behavior of the Laptev Sea Walrus to Sea Ice and Resource Dynamics

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The walrus subspecies inhabiting the Laptev Sea (Odobenus rosmarus divergens) remains one of the least studied walrus taxa and occurs in a region undergoing rapid environmental change driven by climate warming and increasing human activity. We conducted the first satellite telemetry study of walruses in this region, tracking 14 individuals ...
Varvara Levitskaya, Miroslav Babushkin, Svetlana Artemyeva, Danila Skorobogatov, Maria del Mar Delgado   +4 more
wiley   +1 more source

Testosterone concentrations in juvenile male polar bears (Ursus maritimus)

Theriogenology Wild
The ex situ polar bear population in the United States is not sustainable. Current management practices include pairing mates at five to six years of age, but there is evidence that wild bears have sired cubs as early as two years old. Timing acquisition
Jessye Wojtusik, Megan Philpott, Elizabeth Donelan, Monica A. Stoops, Terri L. Roth, Erin Curry   +5 more
doaj   +1 more source

Quantitative assessment of masticatory muscles based on skull muscle attachment areas in Carnivora

The Anatomical Record, Volume 309, Issue 9, Page 2368-2394, September 2026.
Abstract Masticatory muscles are composed of the temporalis, masseter, and pterygoid muscles in mammals. Each muscle has a different origin on the skull and insertion on the mandible; thus, all masticatory muscles contract in different directions. Collecting in vivo data and directly measuring the masticatory muscles anatomically in various Carnivora ...
Kai Ito, Mugino O. Kubo, Ryo Kodera, Sei‐ichiro Takeda, Hideki Endo   +4 more
wiley   +1 more source

Was the giant short-faced bear a hyper-scavenger? A new approach to the dietary study of ursids using dental microwear textures.

PLoS ONE, 2013
Dramatic environmental changes associated with global cooling since the late Miocene, and the onset of glacial-interglacial cycles in the Pleistocene served as a backdrop to the evolutionary radiation of modern bears (family Ursidae). These environmental
Shelly L Donohue, Larisa R G DeSantis, Blaine W Schubert, Peter S Ungar   +3 more
doaj   +1 more source