Ichthyological Research

, Volume 56, Issue 2, pp 195–199 | Cite as

Two highly divergent mitochondrial DNA lineages within Pseudogobio esocinus populations in central Honshu, Japan

  • Koji Tominaga
  • Katsutoshi Watanabe
  • Ryo Kakioka
  • Seiichi Mori
  • Sang-Rin Jeon
Short Report


To elucidate the genetic population structure of Pseudogobio esocinus (Cyprinidae) in central Honshu, Japan, we performed phylogeographic analysis based on partial mitochondrial cytochrome b gene sequences. We found not only differentiation of mtDNA lineages between basins (uncorrected p ≈ 2%), presumably associated with uplifting of the Suzuka Mountains in the early Pleistocene, but also more diverged two mtDNA lineages within basins (p ≈ 8%). No evidence of mtDNA introgression from related sympatric species was found. The phylogeographic history of these two lineages should be elucidated by further analysis based on the specimens of P. esocinus from the entire distribution range.


Cyprinidae Gobioninae Suzuka Mountains Genetic divergence Molecular clock 



We are very grateful to T. Asaka, S. Kanao, J. Kitamura, T. Komiya, H. Ogawa, H. Yamane, and J. Nakajima for providing specimens and information. We also thank M. Nishida for lending us experimental instruments. This study was partially supported by Grants-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology, Japan (no. 18570086, Biodiversity Research of the 21st Century COE: A14, and “Formation of a Strategic Base for Biodiversity and Evolutionary Research: from Genome to Ecosystem” of the GCOE), and by the Foundation of River and Watershed Environment (“Beautifying and Greening the Riverside Environment”).


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Copyright information

© The Ichthyological Society of Japan 2008

Authors and Affiliations

  • Koji Tominaga
    • 1
  • Katsutoshi Watanabe
    • 1
  • Ryo Kakioka
    • 1
  • Seiichi Mori
    • 2
  • Sang-Rin Jeon
    • 3
  1. 1.Department of Zoology, Division of Biological Science, Graduate School of ScienceKyoto UniversitySakyo, KyotoJapan
  2. 2.Biological LaboratoryGifu Keizai UniversityGifuJapan
  3. 3.SeoulRepublic of Korea

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