Molecular Phylogeny and Geography of Korean Medaka Fish (Oryzias latipes)

  • Kang, Tae-Wook ;
  • Lee, Eun-Hye ;
  • Kim, Moo-Sang ;
  • Paik, Sang-Gi ;
  • Kim, Sang-Soo ;
  • Kim, Chang-Bae
  • Received : 2005.01.10
  • Accepted : 2005.05.24
  • Published : 2005.08.31

Abstract

The phylogeny and geography of the medaka (Oryzias latipes) populations of Korea were investigated by analyzing sequence data for the mitochondrial control region. From the 41 haplotypes including 25 Korean haplotypes detected in 64 Korean specimens and data for the Japanese and Chinese populations, phylogenetic and nested clade analyses were executed to examine the phylogeny of haplogroups and the relation of the genetic architecture of the haplotypes to the historical geography of the Korean medaka fish. The analyses suggest that there are two very distinct lineages of Korean medaka, and that these result from reproductive isolation mechanisms due to geographic barriers. The southeastern lineage has experienced recent range expansion to the western region. The northwestern lineage, sister to Chinese populations, showed evidence of internal range expansion with shared haplotypes.

Keywords

Korea;Medaka Fish;Mitochondrial D-Loop;Phylogeography

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Acknowledgement

Supported by : Korea Research Institute of Bioscience and Biotechnology