Maintenance of genetic diversity in cyclic populations - a longitudinal analysis in Myodes glareolus
Rikalainen, K., Aspi, J., Galarza, J., Koskela, E., & Mappes, T. (2012). Maintenance of genetic diversity in cyclic populations - a longitudinal analysis in Myodes glareolus. Ecology and Evolution, 2(7), 1491-1502. https://doi.org/10.1002/ece3.277
Published inEcology and Evolution
DisciplineEkologia ja evoluutiobiologiaEvoluutiotutkimus (huippuyksikkö)Ecology and Evolutionary BiologyCentre of Excellence in Evolutionary Research
© 2012 The Authors. Published by Blackwell Publishing Ltd. This is an Open Access article under the terms of the Creative Commons Attribution Non Commercial License which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Conspicuous cyclic changes in population density characterize many populations of small northern rodents. The extreme crashes in individual number are expected to reduce the amount of genetic variation within a population during the crash phases of the population cycle. By long-term monitoring of a bank vole (Myodes glareolus) population we show that despite the substantial and repetitive crashes in the population size, high heterozygosity is maintained throughout the population cycle. The striking population density fluctuation in fact only slightly reduced the allelic richness of the population during the crash phases. Effective population sizes of vole populations remained also relatively high even during the crash phases. The peak phases are characterized by both a change in spatial pattern of individuals and a rapid accession of new alleles.
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Except where otherwise noted, this item's license is described as © 2012 The Authors. Published by Blackwell Publishing Ltd. This is an Open Access article under the terms of the Creative Commons Attribution Non Commercial License which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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