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Aortic Medial Calcification and Lowered Metabolism in Ground Squirrels

Nature volume 183, pages 754–755 (1959)Cite this article

Abstract

THIS study was intended to test in mammals the concept that some animals have a potential physiological limit of energy which may be utilized at different rates depending upon environmental temperatures. McArthur and Baillie1 were able to triple the life-span of Daphnia (Crustacea) by a 20-deg. drop in temperature. The total heart beats during the life of the Daphnia differed by less than 2 per cent whether the duration of life was a few days due to high temperature or several months due to low temperature. Similarly, Carlson and Hoelzel2 prolonged the life-span of white rats by reducing their metabolism by partial starvation.

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Authors and Affiliations

  1. Departments of Pathology and Physiology, State University of Iowa, Iowa City

    GEORGE R. ZIMMERMAN & G. EDGAR FOLK JUN.

Authors
  1. GEORGE R. ZIMMERMAN
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  2. G. EDGAR FOLK JUN.
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ZIMMERMAN, G., FOLK, G. Aortic Medial Calcification and Lowered Metabolism in Ground Squirrels. Nature 183, 754–755 (1959). https://doi.org/10.1038/183754a0

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