Results 21 to 30 of about 1,532 (172)
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
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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
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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
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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
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Forros, Revista Mexicana de Ciencias Geológicas, vol. 40, núm. 2, agosto 2023
Revista Mexicana de Ciencias Geológicas, 2023 Imagen de la portada: Comparación del extremo distal del húmero de dos osos: un Agriotherium fósil y un Ursus Maritimus reciente. A la izquierda, Agriotherium (MPGJ 5676) de la cuenca de Juchipila, Zacatecas, México, edad Henfiliano temprano-tardío ...
Revista Mexicana de Ciencias geológicas
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Environment International, 2013 Legacy organochlorine contaminants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010.
Rune Dietz +6 more
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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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Environment International, 2013 Brominated flame retardants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010.
Rune Dietz +8 more
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Ursids evolved early and continuously to be low-protein macronutrient omnivores
Scientific Reports, 2022 The eight species of bears world-wide consume a wide variety of diets. Some are specialists with extensive anatomical and physiological adaptations necessary to exploit specific foods or environments [e.g., polar bears (Ursus maritimus), giant pandas ...
Charles T. Robbins +7 more
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