Predation of Svalbard reindeer by polar bears
Predation of Svalbard reindeer by polar bears
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DOI：
10.1007/s003000000138
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发表时间：
2000-10-01
期刊：
影响因子：
1.7
通讯作者：
Bangjord, G
中科院分区：
文献类型：
--
作者：
Derocher, AE;Wiig, O;Bangjord, G
北极熊（Ursus maritimus）被认为是海洋哺乳动物的专性捕食者，特别是两种海豹。本文报道了北极熊对斯瓦尔巴特驯鹿（Rangifer tarandus platyrhyncus）捕食（n = 7）和清除（n = 6）的观察结果。与它们最接近的进化祖先棕熊相似（美国）。北极熊是机会主义者，会捕食有蹄类动物。驯鹿对斯瓦尔巴特群岛北极熊的觅食生态可能不太重要，但观察结果表明，驯鹿对新的猎物有行为可塑性。
Polar bears (Ursus maritimus) are believed to be obligate predators on marine mammals, and particularly, on two species of seals. This paper reports on observations of polar bears preying (n = 7) and scavenging (n = 6) on Svalbard reindeer (Rangifer tarandus platyrhyncus). Similar to their closest evolutionary ancestor, the brown bear (U. arctos), polar bears are opportunistic and will prey on ungulates. Reindeer are likely of minor importance to the foraging ecology of polar bears in Svalbard, but the observations suggest behavioural plasticity in response to a novel prey item.