期刊
JOURNAL OF THERMAL BIOLOGY
卷 28, 期 3, 页码 223-226出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0306-4565(02)00067-0
关键词
bat; microchiroptera; sub-tropical; telemetry; thermoregulation; torpor; Vespadelus; vespertilionidae
It is widely believed that torpor is mainly an adaptation of endotherms for cold stress and food limitation. We studied torpor use in the wild by a small tree-roosting microbat from a sub-tropical area during summer when food was abundant. Surprisingly, two torpor bouts per day were employed on each roost-day observed. The first bout occurred in the early morning and the second bout in the late afternoon, whilst a period of normothermia was maintained over the warmest part of the day. Torpor likely reduced energy expenditure substantially, and may be common in small microbats whose day-roosts are poorly insulated, even in sub-tropical climates. (C) 2003 Elsevier Science Ltd. All rights reserved.
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