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We investigated the importance of energy-conserving strategies for free-ranging 'Planigale gilesi' in arid Australia. We monitored torpor use and basking behaviour using internal temperature-sensitive transmitters. Torpor was used every day; the maximum torpor bout duration was 18.2 h and the minimum body temperature was 10.5°C. Basking behaviour was observed during rewarming from torpor as well as during normothermia. The use of torpor and basking is likely to reduce the energy requirements of 'P. gilesi', thus helping it to survive in a harsh and unpredictable environment. |
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