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


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


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:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Terrestrial biodiversity
UTAS Author:Nicol, SC (Associate Professor Stewart Nicol)
UTAS Author:Andersen, NA (Dr Niels Andersen)
ID Code:58201
Year Published:2009
Web of Science® Times Cited:11
Deposited By:Zoology
Deposited On:2009-09-15
Last Modified:2011-07-27

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