Lumbar laminectomy in a captive, adult polar bear (Ursus maritimus).
Surg Neurol Int, 2017 Animals held in captivity tend to live longer than do their wild counterparts, and as such, are prone to developing age-related degenerative injuries. Here, we present a case of an adult female polar bear with symptomatic lumbar stenosis. There is a paucity of literature on large mammalian spine surgery, and anatomical differences between humans and ...
Morrison JF, Vakharia K, Moreland DB.
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Testosterone concentrations in juvenile male polar bears (Ursus maritimus)
Theriogenology WildThe 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 +5 more
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Polar bears and expanding sea ice in the Mid Holocene Aleutian Islands, Alaska [PDF]
Scientific ReportsThe archaeological record offers the opportunity to infer the effects of regional climatic shifts on species distributions and human-animal interactions.
Lillian Draper Parker +7 more
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Temporal dynamics of polar bear (<i>Ursus maritimus</i>) pregnancy rates in western Hudson Bay: influence of mass, age and timing of first breeding. [PDF]
Conserv PhysiolMcGeachy D +3 more
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Faecal glucocorticoid metabolites as a measure of adrenocortical activity in polar bears (Ursus maritimus). [PDF]
Conserv Physiol, 2020 Hein A +7 more
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Die Primärstruktur der Hämoglobine von Eisbär (Ursus maritimus, carnivora) und Kragenbär (Ursus tibetanus, Carnivora) [PDF]
, 1986 Braunitzer, G. +3 more
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Members of the family Ursidae in the Museum of Nature of Kharkiv University and their craniological features [PDF]
Theriologia Ukrainica, 2019 The exhibition and scientific collection of the Museum of Nature currently deposit 16 specimens of the family Ursidae (bears), which belong to three species and 6 subspecies.
Yuriy Iliukhin
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Dietary ecology of the extinct cave bear: Evidence of omnivory as inferred from dental microwear textures [PDF]
Acta Palaeontologica Polonica, 2016 The diet of the extinct European cave bear, Ursus spelaeus, has widely been debated. Diverging from the extant brown bear (Ursus arctos) approximately 1.2 million years ago, the cave bear is one of the most ubiquitous fossil bears occurring in Europe ...
D. Brent Jones, Larisa R.G. DeSantis
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Ursus maritimus, Polar Bear [Pl. XCI, male]
The quadrupeds of North AmericaJohn James Audubon, John Bachman
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Polar Research, 2022 Sea-ice distribution and duration are declining across the circumpolar range of the polar bear (Ursus maritimus), resulting in a reduced access to ice-obligate seals, its primary prey.
Martyn E. Obbard +4 more
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