中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Genetic diversity and historical population structure of Schizopygopsis pylzovi (Teleostei : Cyprinidae) in the Qinghai-Tibetan Plateau

文献类型:期刊论文

作者Qi, Delin; Guo, Songchang; Zhao, Xinquan; Yang, Jie; Tangi, Wenjia
刊名freshwater biology
出版日期2007-06-01
卷号52期号:6页码:1090-1104
关键词conservation genetic structure mtDNA cytochrome b Qinghai-Tibetan Plateau Schizopygopsis pylzovi
合作状况其它
中文摘要1. complete sequences of 1140 base pair of the cytochrome b gene from 133 specimens were obtained from nine localities including the inflow drainage system, isolated lakes and outflow drainage system in qinghai-tibetan plateau to assess genetic diversity and to infer population histories of the freshwater fish schizopygopsis pylzovi.2. nucleotide diversities (pi) were moderate (0.0024-0.0045) in populations from the outflow drainage system and tuosuo lake, but low (0.0018-0.0021) in populations from qiadam basin. it is probable that the low intra-population variability is related with the paleoenvironmental fluctuation in qiadam basin, suggesting that the populations from qiadam basin have experienced severe bottleneck events in history.3. phylogenetic tree topologies indicate that the individuals from different populations did not form reciprocal monophyly, but the populations from the adjacent drainages cluster geographically. most population pairwise f-st tests were significant, with non-significant pairwise tests between tuosu lake and tuosuo lake in the north-west of the qinghai-tibetan plateau. analysis of molecular variance (amova) indicates that the significant genetic variation was explained at the levels of catchments within and among, not among specific boundaries or inflow and outflow drainage systems.4. the nested clade phylogeographical analysis indicates that historical processes are very important in the observed geographical structuring of s. pylzovi, and the contemporary population structure and differentiation of s. pylzovi may be consistent with the historical tectonic events occurred in the course of uplifts of the qinghai-tibetan plateau. fluctuations of the ecogeographical environment and major hydrographic formation might have promoted contiguous range expansion of freshwater fish populations, whereas the geological barriers among drainages have resulted in the fragmentation of population and restricted the gene flow among populations.5. the significantly large negative f-s-value (-24.91, p < 0.01) of fu's f-s-test and the unimodal mismatch distribution indicate that the species s. pylzovi underwent a sudden population expansion after the historical tectonic event of the gonghe movement.6. the results of this study indicate that each population from the qinghai-tibetan plateau should be managed and conserved separately and that efforts should be directed towards preserving the genetic integrity of each group.
英文摘要1. complete sequences of 1140 base pair of the cytochrome b gene from 133 specimens were obtained from nine localities including the inflow drainage system, isolated lakes and outflow drainage system in qinghai-tibetan plateau to assess genetic diversity and to infer population histories of the freshwater fish schizopygopsis pylzovi.
WOS标题词science & technology ; life sciences & biomedicine
学科主题生物科学
类目[WOS]marine & freshwater biology
研究领域[WOS]marine & freshwater biology
关键词[WOS]cytochrome-b sequences ; mitochondrial-dna ; geographical-distribution ; cladistic-analysis ; consequences ; haplotypes ; evolution ; program ; conservation ; biogeography
收录类别SCI
语种英语
WOS记录号WOS:000246904500011
公开日期2009-12-07
源URL[http://ir.nwipb.ac.cn/handle/363003/1270]  
专题西北高原生物研究所_中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, NW Plateau Inst Biol, Key Lab Qinghai Tibetan Biol Evolut & Adaptat, Xining 810001, Qinghai, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
3.Fishery Environm Monitoring Stn Qinghai Province, Xining, Qinghai, Peoples R China
推荐引用方式
GB/T 7714
Qi, Delin,Guo, Songchang,Zhao, Xinquan,et al. Genetic diversity and historical population structure of Schizopygopsis pylzovi (Teleostei : Cyprinidae) in the Qinghai-Tibetan Plateau[J]. freshwater biology,2007,52(6):1090-1104.
APA Qi, Delin,Guo, Songchang,Zhao, Xinquan,Yang, Jie,&Tangi, Wenjia.(2007).Genetic diversity and historical population structure of Schizopygopsis pylzovi (Teleostei : Cyprinidae) in the Qinghai-Tibetan Plateau.freshwater biology,52(6),1090-1104.
MLA Qi, Delin,et al."Genetic diversity and historical population structure of Schizopygopsis pylzovi (Teleostei : Cyprinidae) in the Qinghai-Tibetan Plateau".freshwater biology 52.6(2007):1090-1104.

入库方式: OAI收割

来源:西北高原生物研究所

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