Fluctuating Asymmetry and Testing Isolation of Montana Grizzly Bear Populations

January 1, 1990

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Fluctuating asymmetry of adult skulls was used to test the genetic isolation of the Yellowstone grizzly bear population from its nearest neighbor. An overall summary statistic was used in addition to 16 other parameters. Tests found the males of the Yellowstone population to be more variable than those of the North Continental Divide Ecosystem. Evidence for precipitation effects is also included. This test tends to support the existing management hypothesis that the Yellowstone population is isolated.

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