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Molecular phylogenetics of Gymnocypris (Teleostei : Cyprinidae) in Lake Qinghai and adjacent drainages
Zhao, K; Li, JB; Yang, GS; Duan, ZY; He, SP; Chen, YY; He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2005-07-01
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume50Issue:13Pages:1325-1333
Abstract149 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.; 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.
SubtypeArticle
KeywordGymnocypris Przewalskii Gymnocypris Eckloni Gymnocypris Scoliostomus Cytochrome b (Cyt b) Cyprinidae Schizothoracinae Molecular Phylogeny
DepartmentChinese 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
Subject AreaMultidisciplinary Sciences
DOI10.1360/982005-223
WOS HeadingsScience & Technology
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000231858000007
WOS KeywordMITOCHONDRIAL-DNA VARIATION ; CYTOCHROME-B SEQUENCES ; SUBDIVISION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9154
Collection期刊论文
Corresponding AuthorHe, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.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
GB/T 7714
Zhao, K,Li, JB,Yang, GS,et al. Molecular phylogenetics of Gymnocypris (Teleostei : Cyprinidae) in Lake Qinghai and adjacent drainages[J]. CHINESE SCIENCE BULLETIN,2005,50(13):1325-1333.
APA Zhao, K.,Li, JB.,Yang, GS.,Duan, ZY.,He, SP.,...&He, SP, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2005).Molecular phylogenetics of Gymnocypris (Teleostei : Cyprinidae) in Lake Qinghai and adjacent drainages.CHINESE SCIENCE BULLETIN,50(13),1325-1333.
MLA Zhao, K,et al."Molecular phylogenetics of Gymnocypris (Teleostei : Cyprinidae) in Lake Qinghai and adjacent drainages".CHINESE SCIENCE BULLETIN 50.13(2005):1325-1333.
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