Ecological Mechanisms of the Formation of Biological Rhythms in Hibernators of the Family Sciuridae in Northeastern Siberia |
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| Authors: | A. I. Anufriev T. N. Solomonova A. A. Turpanov N. G. Solomonov |
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| Affiliation: | (1) Institute of Biological Problems of the Permafrost Zone, Siberian Division, Russian Academy of Sciences, pr. Lenina 41, Yakutsk, Sakha Republic, 677980, Russia;(2) Institute of Space Physical Studies and Aeronomy, Siberian Division, Russian Academy of Sciences, pr. Lenina 31, Yakutsk, Sakha Republic, 677980, Russia |
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| Abstract: | A mechanism of the formation of biological rhythms in hibernators at cold temperatures is proposed. Certain ecophysiological characteristics have been studied in three hibernating species: the ground squirrels Citellus undulatus Pallas, 1778 and C. parryi Richardson, 1825 and the chipmunk Tamias sibiricus Laxmann, 1769. The changes in body temperature and the temperature of litter in wintering nests during hibernation seasons have been studied. The dependences of metabolic rate on ambient temperature and the size and species of animals have been studied. |
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| Keywords: | biorhythms hibernators ground squirrels permafrost zone |
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