A real-time PCR assay to accurately quantify polar bear DNA in fecal extracts [PDF]
PeerJ, 2020 DNA extracted from fecal samples contains DNA from the focal species, food, bacteria and pathogens. Most DNA quantification methods measure total DNA and cannot differentiate among sources.
Kristen M. Hayward +5 more
doaj +2 more sources
Anthropogenic food: an emerging threat to polar bears
Oryx, 2023 Supplemental food from anthropogenic sources is a source of conflict with humans for many wildlife species. Food-seeking behaviours by black bears Ursus americanus and brown bears Ursus arctos can lead to property damage, human injury and mortality of ...
Tom S. Smith +7 more
doaj +1 more source
RIPPLE MARKS—The Story Behind the Story [PDF]
Oceanography, 2015 Last of the Ice Bears? Climate Change Threatens Iconic Polar Bears’ Food Sources In 1773, King George III of England appointed naval officer Constantine John Phipps to command an Arctic expedition.
Cheryl Lyn Dybas
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Magnitude of historical and expected changes of mammals' natural habitats in Eastern Eurasia based on the EEBIO (GLOBIO) modelling approach [PDF]
Праці Теріологічної школи, 2010 In 2005–2006 we developed first in Ukraine 65 GISs (ArcMap 9x) based on new experience using remote sensing data (1 km…25 m) of 1993–2005. The set of maps was used for wide analysis of historical and expected expansion of mammals in the post-soviet ...
Vasyl Prydatko +2 more
doaj +1 more source
Evidence of strong stabilizing effects on the evolution of boreoeutherian (Mammalia) dental proportions. [PDF]
, 2019 The dentition is an extremely important organ in mammals with variation in timing and sequence of eruption, crown morphology, and tooth size enabling a range of behavioral, dietary, and functional adaptations across the class.
Archibald J. D. +26 more
core +6 more sources
Changes in the milk metabolome of the Giant Panda (Ailuropoda melanoleuca) with time after birth: three phases in early lactation and progressive individual differences [PDF]
, 2015 Ursids (bears) in general, and giant pandas in particular, are highly altricial at birth. The components of bear milks and their changes with time may be uniquely adapted to nourish relatively immature neonates, protect them from pathogens, and support ...
Hou, Rong +8 more
core +7 more sources
Acute Chagas' cardiopathy in a polar bear (Ursus maritimus) in Guadalajara, Mexico
Revista da Sociedade Brasileira de Medicina Tropical, 1997 We report a 24 year old female polar bear (Ursus maritimus) who contracted Chagas' infection at the Guadalajara Zoo, in Jalisco, México, and died of acute Chagas' carditis 15 days later.
J. Jaime-Andrade G. +6 more
doaj +1 more source
Microflora of the polar bear (Ursus maritimus) from natural population of the Russian Arctic [PDF]
E3S Web of Conferences, 2021 The paper presents the results of studying the microflora of the polar bear (Ursus maritimus) organism. Samples from 22 individuals were collected during three comprehensive scientific expeditions arranged in 2014 and 2015 at the request of PJSC Rosneft ...
Denisenko Tatyana +2 more
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Wildlife Letters, 2023 This review explores whether recent hybridization events between polar bears (Ursus maritimus) and grizzly bears (Ursus arctos horribilis) will eventually contribute to the extinction of the modern polar bear.
Craig L. Shafer
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Ecology and Evolution, 2023 Anthropogenic stressors are exacerbating the emergence and spread of pathogens worldwide. In regions like the Arctic, where ecosystems are particularly susceptible, marked changes are predicted in regional diversity, intensity, and patterns of infectious
Christina M. Tschritter +5 more
doaj +1 more source