期刊
ENVIRONMENTAL BIOLOGY OF FISHES
卷 90, 期 1, 页码 85-93出版社
SPRINGER
DOI: 10.1007/s10641-010-9720-z
关键词
Grass carp; Yangtze River; mtDNA; Genetic structure; Population history
资金
- National Science Foundation [30630051]
- Shanghai Science and Technology [06DJ14003]
- Shanghai Key Discipline [Y1101]
Ample studies have been conducted to investigate the population genetic structure of grass carp Ctenopharyngodon idella in the Yangtze River, China. However, samples from the upper reaches were not included. In this study, we collected samples from the entire river, including three locations in the upper reaches: Yibin, Banan and Yunyang, two locations in the middle reaches: Shishou and Ruichang and one location in the lower reaches: Hanjiang, and sequenced three mitochondrial coding genes (ND5, ND6 and Cytb) and one control region (i.e., the D-loop). Nineteen haplotypes were observed in grass carp of the Yangtze River through the analysis of combined sequence data sets (around 4428 bp). Haplotype diversity indices (0.6000 similar to aEuro parts per thousand 0.9333) and nucleotide diversity indices (0.0002 similar to aEuro parts per thousand 0.0020) demonstrated low genetic diversity in the Yangtze grass carp. The analysis of molecular variance and the fixation index (F (ST) = 0.0202) revealed insignificant genetic difference between samples from different reaches. Two monophyletic lineages of haplotypes were identified, with the lineage A experiencing potential expansion events. Along with previous findings, this study provides a better understanding of genetic diversity and variation of grass carp in the Yangtze River and will be served as an important baseline to evaluate the long-term impact of the Three Gorges Dam and other hydroelectric facilities on fish biodiversity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据