Results 31 to 40 of about 7,579 (247)
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
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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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
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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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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Die Primärstruktur der Hämoglobine von Eisbär (Ursus maritimus, carnivora) und Kragenbär (Ursus tibetanus, Carnivora) [PDF]
, 1986 Hofmann, O. +3 more
openaire +4 more sources
Polar bear attack on a juvenile narwhal
Fauna Norvegica, 1990 A juvenile female narwhal Monodon monoceros landed at Pond Inlet had several sets of scratches on the posterior part of the body. They were probably made by a polar bear Ursus maritimus in the course of an unsuccessful attack.
Michael C.S. Kingsley
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Bear presence attracts avian predators but does not impact lesser snow goose daily nest attendance
Journal of Avian Biology, 2022 The presence of foraging bears in Arctic breeding bird colonies has been increasingly reported in the literature, and these may constitute disturbance events which cause incubating birds to leave their nest.
Andrew F. Barnas +6 more
doaj +1 more source