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首页> 外文期刊>Biology Bulletin >Hibernation Records on the Surface of Incisors in Radde's Hamster (Mesocricetus raddei, Rodentia, Cricetidae) from Dagestan
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Hibernation Records on the Surface of Incisors in Radde's Hamster (Mesocricetus raddei, Rodentia, Cricetidae) from Dagestan

机译：达吉斯坦Radde的仓鼠（Mesocricetus raddei，Rodentia，Cricetidae）中的门牙表面的休眠记录

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The lower incisors of ten hamsters from the Khunzakh region of Dagestan were studied. One hamster implanted with a temperature data logger successfully survived one winter in natural conditions, and its body temperature curve revealed 25 episodes of hypothermia with the body temperature dropping to 1-9 degrees C, i.e., the period of hibernation. On the surface of the incisors, against a background of very indistinct increments, a zone with more distinct increments was observed. From the apical part of the zone to its basal part, the width of these increments decreased to very narrow, almost indistinguishable increments, and then increased. A comparison of the number of increments formed after this zone with the number of days the hamster survived after arousal from hibernation indicated that the zone was formed during hibernation. The pattern of variation in the increment width in the zone of hibernation corresponded to that observed in the episodes of normothermia during hibernation. A similar zone of hibernation was seen on the incisor surface in six of nine specimens caught in the field in June to early July. The date of their arousal was calculated from the number of increments corresponded to the date of arousal of the hamsters in this region, according to field observations. The pattern of the hibernation record on the incisors of these hamsters was mainly similar to that in the hamster with the temperature data logger and also demonstrated individual variations. Due to the poor contrast of increments on the incisor surface of these hamsters, it is difficult to use this record of hibernation for precise calculation of the data of arousal or for estimation of the duration of every episode of normothermia during hibernation. However, it is possible among the animals caught in spring to early summer to distinguish specimens aroused earlier or later using the position of the zone of hibernation on the incisor. It is also possible to estimate the relative duration of periods with short or long episodes of normothermia using the ratio of fragments with different widths of the increment in the zone of hibernation.
机译：研究了来自达吉斯坦Khunzakh地区的10只仓鼠的下门牙。一只植入了温度数据记录器的仓鼠在自然条件下成功度过了一个冬天，其体温曲线显示出25次体温过低，体温降至1-9摄氏度，即处于休眠期。在门牙的表面上，在增量非常不明显的背景下，观察到一个具有更明显增量的区域。从该区域的顶端部分到其基础部分，这些增量的宽度减小到非常窄的，几乎不可区分的增量，然后增加。在此区域之后形成的增量数量与从休眠状态唤醒后仓鼠存活的天数的比较表明，该区域是在休眠期间形成的。冬眠区中增量宽度的变化模式与冬眠期间正常体温发作中观察到的变化模式相对应。 6月至7月初，在田间捕获的9个标本中有6个在门齿表面看到了类似的冬眠区。根据现场观察，根据与该区域仓鼠唤醒日期相对应的增量数，计算了它们的唤醒日期。这些仓鼠的门牙上的冬眠记录模式主要类似于带有温度数据记录器的仓鼠的冬眠记录模式，并且还显示出个体差异。由于这些仓鼠门齿表面增量的反差较弱，因此很难使用这种休眠记录来精确地计算唤醒数据或估算休眠期间正常体温的每个发作的持续时间。但是，在春季至初夏捕获的动物中，有可能利用门齿上冬眠区的位置来区分早晚唤醒的标本。还可以使用休眠区域中具有不同增量增量宽度的片段的比率来估计常温短期或长期发作的相对持续时间。

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