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Rewarming rates of two large hibernators: Comparison of a monotreme and a eutherian

Citation

Nicol, SC and Andersen, NA and Arnold, W and Ruf, T, Rewarming rates of two large hibernators: Comparison of a monotreme and a eutherian , Journal of Thermal Biology, 34, (3) pp. 155-159. ISSN 0306-4565 (2009) [Refereed Article]

DOI: doi:10.1016/j.jtherbio.2009.01.003

Abstract

We measured body temperatures in two large hibernating mammals, the eutherian alpine marmot (Marmota marmota) and the egg-laying echidna (Tachyglossus aculeatus) from unrestrained animals in their natural environment. In both species hibernation is broken every 13 days on average by rewarming to euthermic temperatures. We found that the time course of a rewarming could be closely fitted with a sigmoid curve, allowing calculation of peak rewarming rate and corresponding body temperature. Maximum rewarming rates were twice as high in marmots as in echidnas (12.1±1.3 °C h -1, n=10 cf. 6.2±1.2 °C h -1, n=10). Peak rewarming rates were positively correlated with body temperature in echidnas, but negatively correlated in marmots. © 2009 Elsevier Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Animal Systematics and Taxonomy
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Forest and Woodlands Flora, Fauna and Biodiversity
Author:Nicol, SC (Associate Professor Stewart Nicol)
Author:Andersen, NA (Dr Niels Andersen)
ID Code:58201
Year Published:2009
Web of Science® Times Cited:10
Deposited By:Zoology
Deposited On:2009-09-15
Last Modified:2011-07-27
Downloads:0

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