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Eduncle posted an MCQ
December 28, 2019 • 17:16 pm 0 points
  • CSIR NET
  • Life Sciences

A general increase in the average body mass of animals population within a species with latitude is known as

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    Eduncle Best Answer

    It is generally defined as a within-species tendency in homeothermic (warm-blooded) animals to have increasing body size with increasing latitude and decreasing ambient temperature. That is, Bergmann’s rule states that among mammals and birds, individuals of a particular species in colder areas tend to have greater body mass than individuals in warmer areas. For instance, white-tailed deer are larger in Canada than in the Florida Keys, and the body size of wood rat populations are inversely correlated with ambient temperature. This principle is named after a nineteenth-century German biologist, Karl Bergmann, who published observations along these lines in 1847.

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