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Demographic processes and genetic variability of mouse populations at the ecological–geographic periphery

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Abstract

On the basis of the results of long-term monitoring, the peculiarities of demographic processes in Sylvaemus uralensis Pall. populations under the peripheral ecological–geographic conditions of the area have been studied. Data of the individual marking and ontogenetic history of animals are presented. Demographic parameters of population, reproduction efficiency, and progeny survival, as well as contributions of various structural groups in the population gene pool were analyzed. The low reproduction activity of the young and the considerable role of the senior age groups in population reproduction were revealed. We have established that changes occur at two structure levels of population: simplification of the age structure and reorganization of the generation structure transformed the genetic information transmission pathways. The transgeneration channel of the transfer of hereditary information is prevailing in pessimum habitats of murine rodents with low reproductive activity of the young stock. In depression years this channel is obligatory and it might cause a reduction in the population genetic heterogeneity.

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Authors and Affiliations

  1. Institute of Plant and Animal Ecology, Ural Branch, Russian Academy Sciences, Yekaterinburg, 620144, Russia

    N. E. Kolcheva

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  1. N. E. Kolcheva
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Correspondence to N. E. Kolcheva.

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Original Russian Text © N.E. Kolcheva, 2015, published in Doklady Akademii Nauk, 2015, Vol. 463, No. 2, pp. 234–236.

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Kolcheva, N.E. Demographic processes and genetic variability of mouse populations at the ecological–geographic periphery. Dokl Biol Sci 463, 190–192 (2015). https://doi.org/10.1134/S0012496615040031

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  • DOI: https://doi.org/10.1134/S0012496615040031

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