Accession Number : AD0427054


Title :   EFFECT OF LOW TEMPERATURE ON THE ISOLATED HEARTS OF CITELLUS LEUCURUS AND C. MOHAVENSIS,


Corporate Author : HARVARD MEDICAL SCHOOL BOSTON MASS


Personal Author(s) : Lyman,C P


Report Date : Sep 1963


Pagination or Media Count : 5


Abstract : The perfused, isolated hearts of two desertliving ground squirrels, Citellus mohavensis and C. leucurus, were exposed to temperatures between 25 and 0 C. Although mohavensis hibernates and aestivates and leucurus does neither, the temperature-rate curves were very similar, and typical of hibernators in general. Leucurus is highly adapted to a diurnal existence in hot arid regions and has a high critical and lethal temperature, yet its heart has not changed its ability to tolerate low temperatures. (Author)


Descriptors :   HIBERNATION , TEMPERATURE , TOLERANCES(PHYSIOLOGY) , HEART , LABORATORY ANIMALS , CRYOGENICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE