Journal of Molecular Evolution

, Volume 38, Issue 6, pp 602–609

Relationship among coelacanths, lungfishes, and tetrapods: A phylogenetic analysis based on mitochondrial cytochrome oxidase I gene sequences

Authors

  • Shin-ichi Yokobori
    • Department of Biological Sciences, Faculty of Bioscience and BiotechnologyTokyo Institute of Technology
    • Department of Industrial Chemistry, Faculty of EngineeringUniversity of Tokyo
  • Masami Hasegawa
    • The Institute of Statistical Mathematics
  • Takuya Ueda
    • Department of Industrial Chemistry, Faculty of EngineeringUniversity of Tokyo
  • Norihiro Okada
    • Department of Biological Sciences, Faculty of Bioscience and BiotechnologyTokyo Institute of Technology
  • Kazuya Nishikawa
    • Department of Biological Sciences, Faculty of Bioscience and BiotechnologyTokyo Institute of Technology
  • Kimitsuna Watanabe
    • Department of Industrial Chemistry, Faculty of EngineeringUniversity of Tokyo
Article

DOI: 10.1007/BF00175880

Cite this article as:
Yokobori, S., Hasegawa, M., Ueda, T. et al. J Mol Evol (1994) 38: 602. doi:10.1007/BF00175880

Abstract

To clarify the relationship among coelacanths, lungfishes, and tetrapods, the amino acid sequences deduced from the nucleotide sequences of mitochondrial cytochrome oxidase subunit I (COI) genes were compared. The phylogenetic tree of these animals, including the coelacanth Latimeria chalumnae and the lungfish Lepidosiren paradoxa, was inferred by several methods. These analyses consistently indicate a coelacanth/lungfish clade, to which little attention has been paid by previous authors with the exception of some morphologists. Overall evidence of other mitochondrial genes reported previously and the results of this study equally support the coelacanth/lungfish and lungfish/tetrapod clades, ruling out the coelacanth/tetrapod clade.

Key words

Origin of tetrapodsCoelacanth Latimeria chalumnaeLungfish Lepidosiren paradoxaCytochrome oxidase subunit I (COI)Maximum likelihood inference of protein phylogeny
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© Springer-Verlag New York Inc 1994