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The Journal of Heredity 2000:91(4)
© 2000 The American Genetic Association 91:271-278

Complete nucleotide sequence of Japanese flounder (Paralichthys olivaceus) mitochondrial genome: structural properties and cue for resolving teleostean relationship

K Saitoh1,*, K Hayashizaki2, Y Yokoyama3, T Asahida2, H Toyohara4, and Y Yamashita1

1Tohoku National Fisheries Research Institute, Shinhama, Shiogama 985-0001, Japan 2School of Fisheries Sciences, Kitasato University, Sanriku, Japan 3Institute of Biosciences, Mukogawa Women's University, Nishinomiya, Japan 4Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan *Corresponding author E-mail: ksaitoh@myg.affrc.go.jp

We cloned and sequenced the complete mitochondrial genome of Japanese flounder (Paralichthys olivaceus). A circular 17,090 bp mitochondrial genome from the flounder contains 37 structural genes as in other vertebrates so far reported. This is the first report of the complete mitochondrial sequence from a higher teleostean fish (Acanthopterygii). The organization including gene order is quite similar to that of other teleostean fishes as well as placental mammals. The putative control region of the Japanese flounder mitochondrial genome contains a length variable region of about a 74 bp tandem repeat cluster. As a preliminary study we adopted the maximum likelihood and neighbor-joining inference methods to examine phylogenetic relationships among teleostean and related fishes. Comparisons of amino acid sequences of protein-coding genes and nucleotide sequences of tRNA genes resolved some middle to deep branches among some teleostean fishes. The flounder mitochondrial genome does not show an indication of evolutionary rate difference among teleosts leading to difficulty in phylogenetic analyses, and our data is useful for future evolutionary studies dealing with higher teleostean fishes.


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Home page
 Mol Biol EvolHome page
M. Miya, A. Kawaguchi, and M. Nishida
Mitogenomic Exploration of Higher Teleostean Phylogenies: A Case Study for Moderate-Scale Evolutionary Genomics with 38 Newly Determined Complete Mitochondrial DNA Sequences
Mol. Biol. Evol., November 1, 2001; 18(11): 1993 - 2009.
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