Abstract
Sequence variation of partial cytochrome b genes between two Coilia species, C. ectenes and C. mystus, was investigated. Of the 402 nucleotides, twenty-seven (6.72%) are polymorphic and all are synonymous substitutions. At the third positions of genetic condon of cytochrome b gene, the two species show an extreme anti-G bias (<4%) and a pronounced bias towards A and C (>68%). There is no amino acid sequence divergence between the partial cytochrome b genes of the two species, indicating a close genetic relationship between them. The k-2p genetic distance of partial cytochrome b segment of the two species is 0.072, suggesting that the species were separated 3.6 Ma ago, in the middle Pliocene. Our result reveals that the cytochrome b gene is an appropriate marker for studies of population genetic structures and phylogeographic patterns of the two species.
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Liu, J., Gao, T., Wang, Y. et al. Sequence comparison of partial cytochrome b genes of two Coilia species. J Ocean Univ. China 4, 85–88 (2005). https://doi.org/10.1007/s11802-005-0029-z
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DOI: https://doi.org/10.1007/s11802-005-0029-z