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Title: Effects of nest use, huddling, and torpor on thermal energetics of eastern pygmy-possums
Contributor(s): Namekata, Sae (author); Geiser, Fritz  (author)orcid 
Publication Date: 2009
DOI: 10.1071/AM08114
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Abstract: Eastern pygmy-possums ('Cercartetus nanus') are known to be conservative with energy use probably because they rely on food that varies in availability. We quantified how nest use, huddling, and torpor contribute to a reduction of energy expenditure in 'C. nanus' during mild cold exposure. In comparison to normothermic resting 'C. nanus' at the same ambient temperature, nest use reduced energy expenditure on average by ~17%, huddling as a pair in a nest by ~50%, whereas torpor, which was employed by all seven individuals, lowered energy expenditure by >95%. Our study shows that while all energy-conserving strategies employed by these possums can contribute significantly to reducing energy expenditure, torpor is by far the most effective because it not only reduces thermoregulatory energy costs, but also energy expenditure required for maintenance processes.
Publication Type: Journal Article
Source of Publication: Australian Mammalogy, 31(3), p. 31-34
Publisher: CSIRO Publishing
Place of Publication: Australia
ISSN: 1836-7402
Field of Research (FOR): 060806 Animal Physiological Ecology
060604 Comparative Physiology
060899 Zoology not elsewhere classified
Socio-Economic Objective (SEO): 970106 Expanding Knowledge in the Biological Sciences
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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