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学科主题: Multidisciplinary Sciences
题名: Molecular phylogenetics of Gymnocypris (Teleostei : Cyprinidae) in Lake Qinghai and adjacent drainages
作者: Zhao, K; Li, JB; Yang, GS; Duan, ZY; He, SP; Chen, YY
通讯作者: He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: Gymnocypris przewalskii ; Gymnocypris eckloni ; Gymnocypris scoliostomus ; cytochrome b (Cyt b) ; Cyprinidae ; Schizothoracinae ; molecular phylogeny
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2005-07-01
DOI: 10.1360/982005-223
卷: 50, 期:13, 页:1325-1333
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; NW Sci Tech Univ Agr & Forestry, Lab Anim Fat Deposit & Muscle Dev, Yangling 712100, Peoples R China; Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China; Qinghai Univ, Agr & Anim Husb Coll, Xining 810003, Peoples R China
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: 149 complete mitochondrial DNA (mtDNA) cytochrome b (Cyt b) genes (1140 bp) of Gymnocypris przewalskii, Gymnocypris eckloni and Gymnocyptis scolistomus from the Lake Qinghai, Yellow River and Qaidam Basin were sequenced and analyzed. Consistent dendrogram indicated that the samples collected from the same species do not constitute a separate monophyletic group and all the samples were grouped into three highly divergent lineages (A, B and C). Among them, Lineage A contained all samples of G. przewalskii from the Lake Qinghai and partial samples of the G. eckloni from the Yellow River. Lineage B contained the remaining samples of G. eckloni from the Yellow River. Lineage C was composed of a monophyletic group by G. eckloni from the Qaidam Basin. Analysis of molecular variance (AMOVA) indicated that most of genetic variations were detected within these three mtDNA lineages (93.12%), suggesting that there are three different lineages of Gymnocypris in this region. Our Cyt b sequence data showed that G. przewalskii was not a polytypic species, and G. scolistomus was neither an independent species nor a subspecies of G. eckloni. The divergent mtDNA lineages of G. eckloni from the Yellow River suggested that gene flow between the different populations was restricted to a certain extent by several gorges on the upper reach of the Yellow River. Lineage B of G. eckloni might be the genetic effect from the ancestor which was incorporated with the endemic schizothoracine fishes when the headward erosion of the Yellow River reached to its current headwaters of late. The G. eckloni from Basin Qaidam was a monophyletic group (lineage C) and F-st values within G. eckloni from the Yellow River were higher than 0.98, suggesting that the gene flow has been interrupted for a long time and the G. eckloni from Basin Qaidam might have been evolved into different species by ecology segregation. The correlation between the rakers number of Gymnocypris and population genetic variation was not significant. All Gymnocypris populations exhibited a low nucleotide diversity (pi = 0.00096-0.00485). Therefore the Gymnocyptis populations from Basin Qaidam could have experienced severe bottleneck effect in history. Our result suggested Gym-nocypris populations of Basin Qaidam should give a high priority in conservation programs.
英文摘要: 149 complete mitochondrial DNA (mtDNA) cytochrome b (Cyt b) genes (1140 bp) of Gymnocypris przewalskii, Gymnocypris eckloni and Gymnocyptis scolistomus from the Lake Qinghai, Yellow River and Qaidam Basin were sequenced and analyzed. Consistent dendrogram indicated that the samples collected from the same species do not constitute a separate monophyletic group and all the samples were grouped into three highly divergent lineages (A, B and C). Among them, Lineage A contained all samples of G. przewalskii from the Lake Qinghai and partial samples of the G. eckloni from the Yellow River. Lineage B contained the remaining samples of G. eckloni from the Yellow River. Lineage C was composed of a monophyletic group by G. eckloni from the Qaidam Basin. Analysis of molecular variance (AMOVA) indicated that most of genetic variations were detected within these three mtDNA lineages (93.12%), suggesting that there are three different lineages of Gymnocypris in this region. Our Cyt b sequence data showed that G. przewalskii was not a polytypic species, and G. scolistomus was neither an independent species nor a subspecies of G. eckloni. The divergent mtDNA lineages of G. eckloni from the Yellow River suggested that gene flow between the different populations was restricted to a certain extent by several gorges on the upper reach of the Yellow River. Lineage B of G. eckloni might be the genetic effect from the ancestor which was incorporated with the endemic schizothoracine fishes when the headward erosion of the Yellow River reached to its current headwaters of late. The G. eckloni from Basin Qaidam was a monophyletic group (lineage C) and F-st values within G. eckloni from the Yellow River were higher than 0.98, suggesting that the gene flow has been interrupted for a long time and the G. eckloni from Basin Qaidam might have been evolved into different species by ecology segregation. The correlation between the rakers number of Gymnocypris and population genetic variation was not significant. All Gymnocypris populations exhibited a low nucleotide diversity (pi = 0.00096-0.00485). Therefore the Gymnocyptis populations from Basin Qaidam could have experienced severe bottleneck effect in history. Our result suggested Gym-nocypris populations of Basin Qaidam should give a high priority in conservation programs.
关键词[WOS]: MITOCHONDRIAL-DNA VARIATION ; CYTOCHROME-B SEQUENCES ; SUBDIVISION
语种: 英语
WOS记录号: WOS:000231858000007
ISSN号: 1001-6538
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9154
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.NW Sci Tech Univ Agr & Forestry, Lab Anim Fat Deposit & Muscle Dev, Yangling 712100, Peoples R China
3.Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China
4.Qinghai Univ, Agr & Anim Husb Coll, Xining 810003, Peoples R China

Recommended Citation:
Zhao, K; Li, JB; Yang, GS; Duan, ZY; He, SP; Chen, YY.Molecular phylogenetics of Gymnocypris (Teleostei : Cyprinidae) in Lake Qinghai and adjacent drainages,CHINESE SCIENCE BULLETIN,2005,50(13):1325-1333
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