Genetic Diversity of mtDNA D-loop Polymorphisms in Laotian Native Fowl Populations

  • Kawabe, K. (Institute of Gene Research, Natural Science Centre for Research and Education, Kagoshima University) ;
  • Worawut, R. (Faculty of Veterinary Medicine, Kasetsart University) ;
  • Taura, S. (Institute of Gene Research, Natural Science Centre for Research and Education, Kagoshima University) ;
  • Shimogiri, T. (Faculty of Agriculture, Kagoshima University) ;
  • Nishida, T. (Faculty of Veterinary Medicine, Kasetsart University) ;
  • Okamoto, S. (Faculty of Agriculture, Kagoshima University)
  • Received : 2013.07.22
  • Accepted : 2013.09.21
  • Published : 2014.01.01


Here, we studied the genetic diversity of native fowls in Laos by analyzing a mitochondrial DNA (mtDNA) sequence polymorphism. A 546-bp fragment of the mtDNA D-loop region was sequenced in 129 chickens from the areas of Vientiane, Luang Prabang and Pakse. In total, 29 haplotypes were identified and formed five clades. Haplotype diversity and nucleotide diversity of the native fowls in Laos were $0.85536{\pm}0.0172$ and $0.010158{\pm}0.005555$, respectively. Although the Laotian native fowls were distributed across five clades, most of them were clustered in two main clades (A and B), which were originated in China. The other haplotypes were contained in clades D, F, and I, which originated from continental southeast Asia. These results suggest that multiple maternal lineages were involved in the origin of domestic chicken in Laos. Moreover, there appear to be at least two maternal lineages, one from China and the other from the southeast Asian continent.


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