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dc.contributor.authorWithers, Philip
dc.contributor.authorCooper, Christine
dc.date.accessioned2017-01-30T13:07:13Z
dc.date.available2017-01-30T13:07:13Z
dc.date.created2015-03-03T20:17:06Z
dc.date.issued2009
dc.identifier.citationWithers, P. and Cooper, C. 2009. Thermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae). Journal of Mammalogy. 90 (3): pp. 752-760.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/28754
dc.identifier.doi10.1644/08-MAMM-A-286R.1
dc.description.abstract

The little red kaluta (Dasykaluta rosamondae) is a small, insectivorous–carnivorous dasyurid marsupial found in arid spinifex grasslands of northwestern Australia. Kalutas resemble other dasyurids in many aspects of their physiology. Body temperature (Tb; 33.5°C; 1.5°C lower than predicted), wet thermal conductance (1.6 J g−1 h−1 °C−1; 91% of predicted), and dry thermal conductance (1.22 J g−1 h−1 °C−1; 55% of predicted) are not significantly different from allometric predictions for marsupials in the thermoneutral zone (26–33°C). A significantly lower-than-expected basal metabolic rate (0.55 ml O2 g−1 h−1; 58% of allometric prediction) and evaporative water loss (1.11 mg g−1 h−1; 39% of predicted) can be attributed to the combined effect of low Tb and phylogeny. Physiological adaptation to aridity is further reflected by a substantially smaller body mass (35 g) than predicted by phylogeny (200 g), a thermolabile Tb and use of torpor, which confer significant energy and water savings, and a high point of relative water economy (16.1°C).

dc.publisherAllen Press
dc.titleThermal, Metabolic and Hygric Physiology of the Little Red Kaluata, Daskaluta Rosamondae (Dasyuromorphia: Dasyuridae)
dc.typeJournal Article
dcterms.source.volume90
dcterms.source.number3
dcterms.source.startPage752
dcterms.source.endPage760
dcterms.source.issn15451410
dcterms.source.titleJournal of Mammalogy
curtin.accessStatusOpen access via publisher


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