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Mitochondrial DNA Part A
DNA Mapping, Sequencing, and Analysis
Volume 28, 2017 - Issue 6
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Research Article

Spatial genetic structure of the cyprinid fish Onychostoma lepturum on Hainan Island

, , , , , , & show all
Pages 901-908 | Received 19 Dec 2015, Accepted 30 Jun 2016, Published online: 08 Sep 2016
 

Abstract

Population genetic structure of Onychostoma lepturum on Hainan Island was investigated based on mitochondrial CR + cyt b region in 63 specimens collected from four populations. Population analyses indicated significant genetic structure (FST = 0.749) and displayed a significant relationship between phylogeny and geography (NST = 0.750 and GST = 0.140). Thirty-one mtDNA haplotypes were classified into four lineages, and these lineages had an almost allopatric distribution. The results of a statistical dispersal-vicariance analysis suggest that the ancestral populations were distributed widely on Hainan Island, and the rising of the central mountainous area of Hainan Island, the Wuzhi and Yinggeling Mountain Range, separated these four drainages into independent lineages. According to a spatial analysis of molecular variance analysis, we divided these populations into three units: ND, CH and WQ + LS, running into Qiongzhou Strait, the Gulf of Tokin and the South China Sea, respectively. According to our study, the exposure of straits and shelf under water retreat gave chances for population dispersion during the glaciations.

Disclosure statement

The authors declare no competing interests in the preparation or execution of this manuscript.

Funding

This research was supported by the National Natural Science Foundation of China (No. 31172066) and Shanghai Universities First-class Disciplines Project of Fisheries.

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