Semenova T P, Spiridonova L A, Zakharova N M
Ross Fiziol Zh Im I M Sechenova. 2014 Sep;100(9):1068-75.
The seasonal peculiarities of the circadian activity of hibernator, Yakutian long tail ground squirrels (S. undulatus) (n = 35) and non hibernator, Wistar rats (n = 35), were studied. The locomotor activity was registered in each subject individually during 5-17 days by means of "Animex" in the different periods of annual cycle. It was shown that ground squirrels were animals with daily type of activity. On the contrary, the Wistar rats demonstrated nocturne type of locomotors activity. The active period in rats was longer than in ground squirrels. It included not only at night, but morning time in spring, and daytime--in summer. The circadian differences between hibernators and non-hibernators were kept during all annual cycle at night time, but in daytime--only in spring and summer time.
研究了冬眠动物雅库特长尾地松鼠（S. undulatus）（n = 35）和非冬眠动物Wistar大鼠（n = 35）昼夜活动的季节特性。在一年周期的不同时期，通过“Animex”对每只动物个体进行5 - 17天的运动活动记录。结果表明，地松鼠是具有白天活动类型的动物。相反，Wistar大鼠表现出夜间运动活动类型。大鼠的活跃期比地松鼠长。它不仅包括夜间，还包括春季的早晨以及夏季的白天。冬眠动物和非冬眠动物之间的昼夜差异在夜间全年保持，但在白天——仅在春季和夏季保持。
