Genetic diversity and differentiation of Mongolian and Russian yak populations
In this study we examined the genetic diversity of yak populations in the northernmost part of their current global distribution. Five Mongolian and one Russian yak populations as well as one Chinese yak population from the Qinghai-Tibetan Plateau, the putative centre of yak domestication, were anal...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Wiley
2005
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/28848 |
| _version_ | 1855530141004857344 |
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| author | Xuebin, Q. Han Jianlin Lkhagva, B. Chekarova, I. Badamdorj, D. Rege, J.E.O. Hanotte, Olivier H. |
| author_browse | Badamdorj, D. Chekarova, I. Han Jianlin Hanotte, Olivier H. Lkhagva, B. Rege, J.E.O. Xuebin, Q. |
| author_facet | Xuebin, Q. Han Jianlin Lkhagva, B. Chekarova, I. Badamdorj, D. Rege, J.E.O. Hanotte, Olivier H. |
| author_sort | Xuebin, Q. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In this study we examined the genetic diversity of yak populations in the northernmost part of their current global distribution. Five Mongolian and one Russian yak populations as well as one Chinese yak population from the Qinghai-Tibetan Plateau, the putative centre of yak domestication, were analysed with 15 microsatellite loci to determine the level of genetic variation within populations as well as the genetic differentiation and relationship between populations. A total of 116 microsatellite alleles were identified. The mean number of alleles per locus (MNA) across populations was 7.73 +- 1.98 and the mean expected heterozygosity (HE) was 0.696 +- 0.026. The relative magnitude of gene differentiation (FST) among populations was 4.1%, and all genetic differentiations (FST) between populations were significant (p < 0.001). A significant inbreeding effect (FIS) was detected in the Hovsgol yak (p < 0.01). There was no indication of a recent bottleneck in any of the populations studied. The results showed that yak populations in Mongolia and Russia have maintained high genetic diversity within populations and a low, although significant, genetic differentiation between populations. Both phylogenetic and principal component analyses support a close genetic relationship between the Gobi Altai, south Gobi and north Hangai populations, and between the Hovsgol and Buryatia populations respectively. Our results indicate that these yak populations should be considered as distinct genetic entities in respect of conservation and breeding programmes. |
| format | Journal Article |
| id | CGSpace28848 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace288482023-12-27T19:43:12Z Genetic diversity and differentiation of Mongolian and Russian yak populations Xuebin, Q. Han Jianlin Lkhagva, B. Chekarova, I. Badamdorj, D. Rege, J.E.O. Hanotte, Olivier H. biodiversity yaks (bovinae) animal genetic resources genes genetic variation inbreeding loci microsatellites phylogeny livestock numbers In this study we examined the genetic diversity of yak populations in the northernmost part of their current global distribution. Five Mongolian and one Russian yak populations as well as one Chinese yak population from the Qinghai-Tibetan Plateau, the putative centre of yak domestication, were analysed with 15 microsatellite loci to determine the level of genetic variation within populations as well as the genetic differentiation and relationship between populations. A total of 116 microsatellite alleles were identified. The mean number of alleles per locus (MNA) across populations was 7.73 +- 1.98 and the mean expected heterozygosity (HE) was 0.696 +- 0.026. The relative magnitude of gene differentiation (FST) among populations was 4.1%, and all genetic differentiations (FST) between populations were significant (p < 0.001). A significant inbreeding effect (FIS) was detected in the Hovsgol yak (p < 0.01). There was no indication of a recent bottleneck in any of the populations studied. The results showed that yak populations in Mongolia and Russia have maintained high genetic diversity within populations and a low, although significant, genetic differentiation between populations. Both phylogenetic and principal component analyses support a close genetic relationship between the Gobi Altai, south Gobi and north Hangai populations, and between the Hovsgol and Buryatia populations respectively. Our results indicate that these yak populations should be considered as distinct genetic entities in respect of conservation and breeding programmes. 2005-04 2013-05-06T07:01:34Z 2013-05-06T07:01:34Z Journal Article https://hdl.handle.net/10568/28848 en Limited Access Wiley Journal of Animal Breeding and Genetics;122(2): 117-126 |
| spellingShingle | biodiversity yaks (bovinae) animal genetic resources genes genetic variation inbreeding loci microsatellites phylogeny livestock numbers Xuebin, Q. Han Jianlin Lkhagva, B. Chekarova, I. Badamdorj, D. Rege, J.E.O. Hanotte, Olivier H. Genetic diversity and differentiation of Mongolian and Russian yak populations |
| title | Genetic diversity and differentiation of Mongolian and Russian yak populations |
| title_full | Genetic diversity and differentiation of Mongolian and Russian yak populations |
| title_fullStr | Genetic diversity and differentiation of Mongolian and Russian yak populations |
| title_full_unstemmed | Genetic diversity and differentiation of Mongolian and Russian yak populations |
| title_short | Genetic diversity and differentiation of Mongolian and Russian yak populations |
| title_sort | genetic diversity and differentiation of mongolian and russian yak populations |
| topic | biodiversity yaks (bovinae) animal genetic resources genes genetic variation inbreeding loci microsatellites phylogeny livestock numbers |
| url | https://hdl.handle.net/10568/28848 |
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