Hibernation in the Eversman hamster (Allocricetulus eversmanni Brandt, 1859) from the Saratov Trans-Volga region |
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| Authors: | M. V. Ushakova N. Yu. Feoktistova D. V. Petrovskii A. V. Gureeva S. V. Naidenko A. V. Surov |
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| Affiliation: | 1. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071, Russia
2. Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent??eva 10, Novosibirsk, 630091, Russia
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| Abstract: | The hibernation of the Eversman hamster is proven for the first time. The body temperature measured with a thermoaccumulator implanted into the abdominal cavity dropped down to +5°C several times during the winter. This species differs from other hibernating mammals in the peculiarities of its seasonal fluctuation of steroid hormones (cortisol, progesterone, estradiol, and testosterone) and in the absence of fat deposits before hibernation. |
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