Please use this identifier to cite or link to this item: https://une.intersearch.com.au/unejspui/handle/1959.11/1497
Title: Yearlong hibernation in a marsupial mammal
Contributor(s): Geiser, Fritz  (author)orcid 
Publication Date: 2007
DOI: 10.1007/s00114-007-0274-7
Handle Link: https://hdl.handle.net/1959.11/1497
Abstract: Many mammals hibernate each year for about 6 months in autumn and winter and reproduce during spring and summer when they are generally not in torpor. I tested the hypothesis that the marsupial pygmy-possum (Cercartetus nanus), an opportunistic nonseasonal hibernator with a capacity for substantial fattening, would continue to hibernate well beyond winter. I also quantified how long they were able to hibernate without access to food before their body fat stores were depleted. Pygmy-possums exhibited a prolonged hibernation season lasting on average for 310 days. The longest hibernation season in one individual lasted for 367 days. For much of this time, despite periodic arousals after torpor bouts of ~12.5 days, energy expenditure was reduced to only ~2.5% of that predicted for active individuals. These observations represent the first report on body-fat-fuelled hibernation of up to an entire year and provide new evidence that prolonged hibernation is not restricted to placental mammals living in the cold.
Publication Type: Journal Article
Source of Publication: Naturwissenschaften, 94(11), p. 941-944
Publisher: Springer
Place of Publication: Berlin, Germany
ISSN: 1432-1904
0028-1042
Field of Research (FOR): 060604 Comparative Physiology
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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School of Environmental and Rural Science

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