大棕色蝙蝠在干燥岩石裂中冬眠的生理和行为适应
B J Klüg-Baerwald1, C L Lausen2, S M Burns1
1Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, SK, S4S 0A2, Canada.
概括
岩石裂中的大棕色蝙蝠表现出独特的冬眠模式,在的状态下对微型气候变化保持不敏感. 能量主要用于维持,而不是在唤醒期间,以帮助飞行冬季活动.
科学领域:
- 动物学 动物学
- 生态生态学 生态生态学
- 生理学 生理学 生理学
背景情况:
- 过冬的能量和生存取决于冬眠模式,受到微气候的影响.
- 稳定的冬眠通常会比不稳定的环境节省更多的能源.
研究的目的:
- 为了监测大棕色蝙蝠 (Eptesicus fuscus) 在岩石裂中的冬眠模式.
- 确定岩石裂中的微气候不稳定性是否会影响唤醒频率和能量消耗.
主要方法:
- 监测了蝙蝠的个体冬眠模式在岩石裂的冬眠.
- 记录了麻木发作的持续时间,唤醒频率和微气候 (温度,湿度).
- 计算了昏迷和唤醒期间的能量消耗.
主要成果:
- 巨大的棕色蝙蝠在岩石裂中表现出对微气候波动的不敏感性,而在麻木.
- 兴奋的概率仍然在昼夜影响下,蝙蝠经常离开冬眠室.
- 大多数能量都花在维持热的体温上,而不是在唤醒过程中.
结论:
- 岩石裂冬眠器尽管不稳定,但不会增加大棕色蝙蝠的兴奋频率.
- 飞行是一个重要的冬季活动,可能有助于euthermic时期和有效的唤醒.
- 岩石生活的大棕色蝙蝠的冬眠模式不同于洞穴或建筑物的冬眠模式.
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