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Cannibalism and Predation on Black Bears by Grizzly Bears in the Yellowstone Ecosystem, 1975-1990 预览资料
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Cannibalism and Predation on Black Bears by Grizzly Bears in the Yellowstone Ecosystem, 1975-1990

著者: David J Mattson; Richard R Knight; Bonnie M Blanchard
版本/格式: 文章 文章 : 英语
刊登在:Journal of Mammalogy, May, 1992, vol. 73, no. 2, p. 422-425
数据库:JSTOR
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文件类型: 文章
所有的著者/提供者: David J Mattson; Richard R Knight; Bonnie M Blanchard
ISSN:0022-2372
OCLC号码: 481745105
语言注释: English
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摘要:

We documented one instance of an adult male grizzly bear preying upon a black bear and four instances where circumstantial evidence suggested that grizzly bears (two cubs-of-the-year, one yearling female that was injured, and one adult male) had been preyed upon by conspecifics. We also examined feces of grizzly bears for bear remains. Remains of bears tended to be more common in spring feces and did not differ in frequency between early and late years of the study. Our observations generally support existing hypotheses concerning cannibalism among bears.

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