Journal
JOURNAL OF THERMAL BIOLOGY
Volume 35, Issue 6, Pages 290-294Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jtherbio.2010.06.005
Keywords
Tupaia belangeri; Evaporative water loss; Body temperature regulation
Funding
- National Science Foundation of China [30560026]
- Basilic Project of YunNan Province [2007C000Z1]
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Thermogenic characteristics and evaporative water loss were measured at different temperatures in Tupaia belangeri. The thermal neutral zone (TNZ) of T. belangeri was 30-35 degrees C. Mean body temperature was 39.76 +/- 0.27 degrees C and mean body mass was 100.86 +/- 9.09g. Basal metabolic rate (BMR) was 1.38 +/- 0.03 ml O-2/g h. Average minimum thermal conductance (C-m) was 0.13 +/- 0.01 ml O-2/g h degrees C. Evaporative water loss in T. belangeri increased when the temperature rose; the maximal evaporative water loss was 3.88 +/- 0.41 mg H2O/g h at 37.5 degrees C. The results may reflect features of small mammals in the sub-tropical plateau region: T. belangeri had high basal metabolic rate and high total thermal conductance, compared with the predicted values based on their body mass whilst their body temperatures are relatively high; T. belonged has high levels of evaporative water loss and poor water-retention capacity. Evaporative water loss plays an important role in temperature regulation. (C) 2010 Elsevier Ltd. All rights reserved.
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