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Specific ecological features of the brown bear (Ursus arctos L. 1758) in Yakutia

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Abstract

In Yakutia, the brown bear inhabits the forest and forest-tundra zones. Compared to bears from other regions of Russia, Yakutian bears have slightly smaller body and skull sizes and are mainly herbivorous, with their wood spectrum being relatively narrow. Their fecundity averages 1.68 cubs per parous female. The bears make their dens at a depth reaching 2.5–3 m. The denning period begins early and is 195–210 days long. An electroencephalographic analysis of the effect of a 1–10 kDa peptide fraction from the bear brain on Wistar rats has shown that wintering bears are in the state of sleep, or “superficial hibernation.”

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Authors and Affiliations

  1. Institute for Biological Problems of the Cryolithozone, Siberian Branch, Russian Academy of Sciences, pr. Lenina 41, Yakutsk, 677891, Russia

    A. K. Akhremenko & V. T. Sedalishchev

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  1. A. K. Akhremenko
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  2. V. T. Sedalishchev
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Correspondence to A. K. Akhremenko.

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Original Russian Text © A.K. Akhremenko, V.T. Sedalishchev, 2008, published in Ekologiya, 2008, No. 3, pp. 201–205.

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Akhremenko, A.K., Sedalishchev, V.T. Specific ecological features of the brown bear (Ursus arctos L. 1758) in Yakutia. Russ J Ecol 39, 188–192 (2008). https://doi.org/10.1134/S1067413608030065

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