Social play in wild brown bears of varying age-sex class
نویسندگان
چکیده
منابع مشابه
Population genetics of ice age brown bears.
The Pleistocene was a dynamic period for Holarctic mammal species, complicated by episodes of glaciation, local extinctions, and intercontinental migration. The genetic consequences of these events are difficult to resolve from the study of present-day populations. To provide a direct view of population genetics in the late Pleistocene, we measured mitochondrial DNA sequence variation in seven ...
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Recent studies have reported discordant gene trees in the evolution of brown bears and polar bears. Genealogical histories are different among independent nuclear loci and between biparentally inherited autosomal DNA (aDNA) and matrilineal mitochondrial DNA (mtDNA). Based on multi-locus genomic sequences from aDNA and mtDNA, we inferred the population demography of brown and polar bears and fou...
متن کاملEffects of sex, age, capturing method, and season on serum chemistry values of brown bears in Croatia.
Sixty seven serum samples collected from 43 European brown bears (Ursus arctos) from Croatia were tested for < or = 31 serum chemistry parameters. Results were grouped and compared by bears origin (method of capture), sex, age, mass, and season sampled. Greatest differences were found between captive and free-living bears, and minor differences were found when sex, age, mass, or season of sampl...
متن کاملFactors Affecting Local People’s Fear of Brown Bears (Ursus Arctos) in Protected Areas of Alborz Province
Wildlife management and conservation is challenged by public perceptions and fear of carnivores in communities living in close proximity to wild habitats, where large carnivores occur. Fear of carnivores influences peoplechr('39')s attitudes towards wild animals, further exacerbating the problems associated with effective conservation and management of wildlife. Here, we aimed to investigate th...
متن کاملThe influence of diet on faecal DNA amplification and sex identification in brown bears (Ursus arctos).
To evaluate the influence of diet on faecal DNA amplification, 11 captive brown bears (Ursus arctos) were placed on six restricted diets: grass (Trifolium spp., Haplopappus hirtus and Poa pratensis), alfalfa (Lupinus spp.), carrots (Daucus spp.), white-tailed deer (Odocoileus virginianus), blueberries (Vaccinium spp.) and salmon (Salmo spp.). DNA was extracted from 50 faecal samples of each res...
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ژورنال
عنوان ژورنال: acta ethologica
سال: 2016
ISSN: 0873-9749,1437-9546
DOI: 10.1007/s10211-016-0237-0