Short‐term variations in gene flow related to cyclic density fluctuations in the common vole
Abstract In highly fluctuating populations with complex social systems, genetic patterns are likely to vary in space and time due to demographic and behavioural processes. Cyclic rodents are extreme examples of demographically instable populations that often exhibit strong social organization. In su...
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crwiley:10.1111/mec.12818 2024-09-15T18:02:49+00:00 Short‐term variations in gene flow related to cyclic density fluctuations in the common vole Gauffre, Bertrand Berthier, Karine Inchausti, Pablo Chaval, Yannick Bretagnolle, Vincent Cosson, Jean‐François INRA ACI ECCO 2014 http://dx.doi.org/10.1111/mec.12818 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12818 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12818 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 23, issue 13, page 3214-3225 ISSN 0962-1083 1365-294X journal-article 2014 crwiley https://doi.org/10.1111/mec.12818 2024-08-01T04:22:00Z Abstract In highly fluctuating populations with complex social systems, genetic patterns are likely to vary in space and time due to demographic and behavioural processes. Cyclic rodents are extreme examples of demographically instable populations that often exhibit strong social organization. In such populations, kin structure and spacing behaviour may vary with density fluctuations and impact both the composition and spatial structure of genetic diversity. In this study, we analysed the multiannual genetic structure of a cyclic rodent, M icrotus arvalis , using a sample of 875 individuals trapped over three complete cycles (from 1999 to 2007) and genotyped at 10 microsatellite loci. We tested the predictions that genetic diversity and gene flow intensity vary with density fluctuations. We found evidences for both spatial scale‐dependant variations in genetic diversity and higher gene flow during high density. Moreover, investigation of sex‐specific relatedness patterns revealed that, although dispersal is biased toward males in this species, distances moved by both sexes were lengthened during high density. Altogether, these results suggest that an increase in migration with density allows to restore the local loss of genetic diversity occurring during low density. We then postulate that this change in migration results from local competition, which enhances female colonization of empty spaces and male dispersal among colonies. Article in Journal/Newspaper Common vole Wiley Online Library Molecular Ecology 23 13 3214 3225 |
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Abstract In highly fluctuating populations with complex social systems, genetic patterns are likely to vary in space and time due to demographic and behavioural processes. Cyclic rodents are extreme examples of demographically instable populations that often exhibit strong social organization. In such populations, kin structure and spacing behaviour may vary with density fluctuations and impact both the composition and spatial structure of genetic diversity. In this study, we analysed the multiannual genetic structure of a cyclic rodent, M icrotus arvalis , using a sample of 875 individuals trapped over three complete cycles (from 1999 to 2007) and genotyped at 10 microsatellite loci. We tested the predictions that genetic diversity and gene flow intensity vary with density fluctuations. We found evidences for both spatial scale‐dependant variations in genetic diversity and higher gene flow during high density. Moreover, investigation of sex‐specific relatedness patterns revealed that, although dispersal is biased toward males in this species, distances moved by both sexes were lengthened during high density. Altogether, these results suggest that an increase in migration with density allows to restore the local loss of genetic diversity occurring during low density. We then postulate that this change in migration results from local competition, which enhances female colonization of empty spaces and male dispersal among colonies. |
author2 |
INRA ACI ECCO |
format |
Article in Journal/Newspaper |
author |
Gauffre, Bertrand Berthier, Karine Inchausti, Pablo Chaval, Yannick Bretagnolle, Vincent Cosson, Jean‐François |
spellingShingle |
Gauffre, Bertrand Berthier, Karine Inchausti, Pablo Chaval, Yannick Bretagnolle, Vincent Cosson, Jean‐François Short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
author_facet |
Gauffre, Bertrand Berthier, Karine Inchausti, Pablo Chaval, Yannick Bretagnolle, Vincent Cosson, Jean‐François |
author_sort |
Gauffre, Bertrand |
title |
Short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
title_short |
Short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
title_full |
Short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
title_fullStr |
Short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
title_full_unstemmed |
Short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
title_sort |
short‐term variations in gene flow related to cyclic density fluctuations in the common vole |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1111/mec.12818 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmec.12818 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.12818 |
genre |
Common vole |
genre_facet |
Common vole |
op_source |
Molecular Ecology volume 23, issue 13, page 3214-3225 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 |
op_doi |
https://doi.org/10.1111/mec.12818 |
container_title |
Molecular Ecology |
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23 |
container_issue |
13 |
container_start_page |
3214 |
op_container_end_page |
3225 |
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1810440227925262336 |