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The Journal of heredity2003; 94(5); 374-380; doi: 10.1093/jhered/esg079

Microsatellite variation in Japanese and Asian horses and their phylogenetic relationship using a European horse outgroup.

Abstract: The genetic relationships of seven Japanese and four mainland-Asian horse populations, as well as two European horse populations, were estimated using data for 20 microsatellite loci. Mongolian horses showed the highest average heterozygosities (0.75-0.77) in all populations. Phylogenetic analysis showed the existence of three distinct clusters supported by high bootstrap values: the European cluster (Anglo-Arab and thoroughbreds), the Hokkaido-Kiso cluster, and the Mongolian cluster. The relationships of these clusters were consistent with their geographical distributions. Basing our assumptions on the phylogenetic tree and the genetic variation of horse populations, we suggest that Japanese horses originated from Mongolian horses migrating through the Korean Peninsula. The genetic relationship of Japanese horses corresponded to their geographical distribution. Microsatellite polymorphism data were shown to be useful for estimating the genetic relationships between Japanese horses and Asian horses.
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Publication Date: 2003-10-15 PubMed ID: 14557389DOI: 10.1093/jhered/esg079Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research observed the genetic relationships between several Asian horse populations, including Japanese and mainland Asian, and European horse populations, using microsatellite data. It suggests that Japanese horses originated from Mongolian horses, with microsatellite polymorphism providing useful for estimating genetic relationships.

Examination of Genetic Relationships

  • The research conducted looks into the genetic relationships of various horse populations in different regions. These populations include seven from Japan, four from the mainland of Asia and two from Europe. To establish these associations, the research uses data from 20 microsatellite loci. Microsatellite loci are specific areas in the DNA sequence that consist of repeated units. The number of repeats often varies among individual horses, making them useful for genetic studies.

Notable Findings and Results

  • The studies indicate that Mongolian horses exhibit the highest average heterozygosities among all populations, ranging from 0.75 to 0.77. Heterozygosities is a measure used in genetics that represents the expected probability of two alleles at a specific locus to be different in a randomly selected individual.
  • The phylogenetic analysis in the study identified three unique clusters. These include the European cluster (made up of Anglo-Arab and thoroughbreds), a cluster from Hokkaido-Kiso, and finally, a Mongolian cluster. This particular division and categorization were substantiated with high bootstrap values, which are a statistical method used in phylogenetics to understand the reliability of specific branches in a tree diagram.

Implications and Suggestions

  • The study also draws some conclusions regarding the origin of Japanese horses. Based on the results of the phylogenetic tree and genetic variation of different horse populations, the research suggests that Japanese horses may have originated from Mongolian horses, who likely migrated through the Korean Peninsula.
  • Evidence from the study supports this claim, demonstrating that the genetic relationship of Japanese horses aligns with their geographical distribution.
  • The paper finally concludes by promoting use of microsatellite polymorphism data when estimating genetic relationships between Japanese horses and Asian horses, considering the value and relevance of the data highlighted in its own study results.

Cite This Article

APA
Tozaki T, Takezaki N, Hasegawa T, Ishida N, Kurosawa M, Tomita M, Saitou N, Mukoyama H. (2003). Microsatellite variation in Japanese and Asian horses and their phylogenetic relationship using a European horse outgroup. J Hered, 94(5), 374-380. https://doi.org/10.1093/jhered/esg079

Publication

The Journal of heredity
ISSN: 0022-1503
NlmUniqueID: 0375373
Country: United States
Language: English
Volume: 94
Issue: 5
Pages: 374-380

Researcher Affiliations

Tozaki, T
  • Department of Molecular Genetics, Laboratory of Racing Chemistry, 1731-2 Tsurutamachi, Utsunomiya, Tochigi 320-0851, Japan. ttozaki@nyc.odn.ne.jp
Takezaki, N
    Hasegawa, T
      Ishida, N
        Kurosawa, M
          Tomita, M
            Saitou, N
              Mukoyama, H

                MeSH Terms

                • Alleles
                • Animals
                • Asia
                • Genetic Variation
                • Heterozygote
                • Horses / genetics
                • Microsatellite Repeats
                • Phylogeny

                Citations

                This article has been cited 30 times.
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