Diurnal Torpidity in the California Pocket Mouse

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Science  04 May 1962:
Vol. 136, Issue 3514, pp. 380-381
DOI: 10.1126/science.136.3514.380


The California pocket mouse, Perognathus californicus, compensates for food supplies which are less than the normal requirement by undergoing a variable period of daily torpor. At an ambient temperature of 15°C, the body temperature of a torpid mouse drops to 16°C, and the metabolism falls to 15 percent of the basal rate. Several other species of pocket mice also show this phenomenon.