La torpeur chez Elephantulus rozeti (Insectivora, Macroscelididae)

1 January 1983

journal article
research article
Published by Walter de Gruyter GmbH in Mammalia

Vol. 47 (1) , 87-91
https://doi.org/10.1515/mamm.1983.47.1.87

Abstract

E. rozeti inhabits the rocky, arid areas of north Africa and is active throughout the year. The body temperature (Tr) is labile. In the field, Tr varies between 32.degree. C while resting in the shade and 37.degree. C while resting in the sun. In captivity E. rozeti at ambient temperatures higher than 20.degree. C, Tr in the active animal varies between 31-37.degree. C. Torpor shows a circadian pattern and occurs spontaneously. The critical Tr (triggering arousal in torpid animals) is .apprx. 20.degree. C and the arousal rate, 1.degree. C .times. min-1 between 20-34.degree. C. These physiological features are compared to those of other insectivores and discussed in relation to the ecology of E. rozeti.

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