Walhovd Helge, Jensen Jan Vestergaard
Zoological Institute, University of Aarhus, Århus.
Oecologia. 1976 Dec;22(4):425-429. doi: 10.1007/BF00345318.
A dormouse found in hibernation in its winter nest on January 26 was studied continously from February 5 until May 11 by recording ambient temperature, temperatures inside the nest ball and 5 cm from it, and by recording any possible motor activity. The first emergence from hibernaculum occurred on April 3 after which the animal was active each day with the exception of April 11, 13 and 14. Activity mainly occurred during evening and night hours and lasted on average 4 hrs (2-8 hrs) per day. Outside periods of activity the winter nest was consistently used as a place of shelter and for sleep.The ambient temperature ranged from-0.5° to 21.0°C being chiefly 1°C less the nestbox temperature. The difference between the nest-box and nest temperature was also about 1°C when the animal was inactive, thus clearly indicating torpidity. Steep increases in nest temperature, amounting to 14-18°C and raising nest temperature up to 30°C, were recorded on four occasions. This is interpreted as shallow torpor, since no activity occurred on these days.The spontaneous warming up from deep hypothermia to shallow torpor lasted on average 40 min (30-70 min), while the duration of passive cooling when returning to the hypothermic condition amounted to 5 hrs. In the weeks following continuous hibernation the dormouse alternated between activity, shallow torpor, and relatively deep torpor each day. The species should be considered as a true aestivator.
1月26日，在其冬季巢穴中发现一只处于冬眠状态的榛睡鼠，从2月5日至5月11日对其进行了持续研究，记录了环境温度、巢穴内部及其周围5厘米处的温度，并记录了任何可能的运动活动。4月3日首次从冬眠处出现，此后这只动物除了4月11日、13日和14日外每天都很活跃。活动主要发生在傍晚和夜间，平均每天持续4小时（2 - 8小时）。在不活动期间，冬季巢穴一直被用作庇护所和睡眠场所。环境温度范围为-0.5°C至21.0°C，主要比巢箱温度低1°C。当动物不活动时，巢箱温度与巢穴温度之间的差异也约为1°C，从而清楚地表明其处于蛰伏状态。有四次记录到巢穴温度急剧上升，高达14 - 18°C，使巢穴温度升至30°C。这被解释为浅蛰伏，因为在这些日子里没有活动发生。从深度低温自发升温至浅蛰伏平均持续40分钟（30 - 70分钟），而回到低温状态时被动冷却的持续时间为5小时。在持续冬眠后的几周里，榛睡鼠每天在活动、浅蛰伏和相对深蛰伏之间交替。该物种应被视为真正的夏眠动物。
