Results 21 to 30 of about 7,676 (261)
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
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
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
doaj +1 more source
Genetic Relationships of Extant Brown Bears (Ursus arctos) and Polar Bears (Ursus maritimus) [PDF]
Journal of Heredity, 2012 Polar bears (Ursus maritimus) and brown bears (Ursus arctos) are closely related species for which extensive mitochondrial and nuclear phylogenetic comparisons have been made. We used previously published genotype data for 8 microsatellite DNA loci from 930 brown bears in 19 populations and 473 polar bears in 16 populations to compare the population ...
Matthew A, Cronin, Michael D, MacNeil
openaire +2 more sources
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
Biomechanical evolution of solid bones in large animals: a microanatomical investigation [PDF]
, 2016 International ...
Alexander +72 more
core +3 more sources
Glucuronidation in the polar bear (Ursus maritimus)
Marine Environmental Research, 2004 Polar bears bioaccumulate lipophilic pollutants, including polychlorinated biphenyls (PCBs), into their bodies from their exclusive diet of marine organisms. Hydroxylated PCB metabolites (OH-PCBs) have been found in plasma, presumably due to CYP-dependent biotransformation of PCBs in liver.
Department of Medicinal Chemistry, University of Florida, P.O. Box 100485 S.W. Archer Road, Room P6-20, Gainesville, FL 32610-0485, USA ( host institution ) +2 more
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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