Abstract
Wild populations of Prenant’s schizothoracin, Schizothorax prenanti, were collected from the Qingyi, Dadu, and Muli rivers in upper reaches of the Yangtze River. Genetic variation and population structure were examined based on analysis of the mitochondrial DNA control region. Nucleotide sequence analysis defined 30 haplotypes in 41 individuals. The nucleotide and haplotype diversities were very high, and genetic distances between the Dadu and Qingyi populations were much smaller than between either of them and the Muli population. The analysis of molecular variance demonstrated that most variation occurred within samples, and the differentiation between Muli and Dadu or Qingyi was significant. Estimates of gene flow indicated reproductive isolation between Muli and the other populations, and this divergence might be related to geographical location. The results are mostly consistent with the findings from AFLP analysis and also suggested considerable genetic diversity of the populations in the Muli, Dadu, and Qingyi rivers.
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Acknowledgments
This work was funded by the National Natural Science Foundation of China (No. 30670290) and Science and Technology Bureau of Sichuan Province, China (No. 03JY029-071-2). We would like to thank Taiming Yan, Chunlin He, and Tianming Xie for their help during sample collection. We are grateful to the anonymous reviewers for their helpful comments on the manuscript, and Josh Walters and David Punzalan for their revisions of English writing.
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Song, Z., Song, J. & Yue, B. Population genetic diversity of Prenant’s schizothoracin, Schizothorax prenanti, inferred from the mitochondrial DNA control region. Environ Biol Fish 81, 247–252 (2008). https://doi.org/10.1007/s10641-007-9197-6
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DOI: https://doi.org/10.1007/s10641-007-9197-6