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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Genetic diversity and differentiation of Mongolian and Russian yak populations
Journal of Animal Breeding and Genetics, Volume 122, No. 2, Year 2005
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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 (F IS) 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 Blackwell Verlag, Berlin.
Authors & Co-Authors
Xuebin, Q.
China, Lanzhou
Lanzhou University
Kenya, Nairobi
International Livestock Research Institute Nairobi
Jianlin, Han
Kenya, Nairobi
International Livestock Research Institute Nairobi
China, Lanzhou
Gansu Agricultural University
Lkhagva, B.
Mongolia, Ulaanbaatar
Mongolian University of Life Sciences
Chekarova, I.
Russian Federation, Ulan-ude
Buryat State Academy of Agriculture
Badamdorj, D.
Mongolia, Ulaanbaatar
Mongolian University of Life Sciences
Rege, John Edward O.
Kenya, Nairobi
International Livestock Research Institute Nairobi
Hanotte, Olivier H.
Kenya, Nairobi
International Livestock Research Institute Nairobi
Statistics
Citations: 40
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1111/j.1439-0388.2004.00497.x
ISSN:
09312668
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study