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题名: Multigene-based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family
作者: Lyu, Zhao1; Wang, Jingyi1; Huang, Jie2; Warren, Alan3; Shao, Chen1
关键词: multigene ; new family ; phylogeny ; Urostylida
刊名: ZOOLOGICA SCRIPTA
发表日期: 2018-03-01
DOI: 10.1111/zsc.12267
卷: 47, 期:2, 页:243-254
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Evolutionary Biology ; Zoology
研究领域[WOS]: Evolutionary Biology ; Zoology
英文摘要: The Urostylida is a major taxon of hypotrichs with many unresolved evolutionary relationships. Due to incomplete or inaccurate character states and a paucity of morphogenetic data, the phylogeny of several taxa within urostylids is unresolved. Molecular phylogeny studies based on single gene (SSU rDNA) data may lead to conflict between morphological classification and SSU rDNA tree. In this work, 20 new sequences (SSU rDNA, ITS1-5.8S-ITS2 and LSU rDNA) of five genera of urostylids are provided to further investigate the phylogenetic relationships of this group. The main findings are as follows: (i) the establishment of Hemicycliostylidae, a novel family presently including Hemicycliostyla and Australothrix, is supported by both single gene and concatenated phylogenies; (ii) all molecular data support the exclusion of Eschaneustyla from the family Epiclintidae; (iii) Australothrix, Bergeriella and Thigmokeronopsis are distinctly separated in all gene trees although they share the character that each posterior streak generates the ventral row together with the midventral pair; (iv) compared with closely related genera in all trees, that is Metaurostylopsis and Apourostylopsis, Neourostylopsis is characterized by having more than three frontal cirri arranged in distinct or indistinct corona rather than the length of the midventral complex; (v) Hemicycliostyla and Pseudourostyla, two morphologically similar genera, do not form a monophyletic group in all molecular trees, suggesting that the bicorona, multiple marginal cirral rows and high numbers of dorsal kineties may result from convergent evolution; (vi) species of Bakuella fall into three separate clades in all trees suggesting that this genus needs to be split.
关键词[WOS]: N. SP CILIOPHORA ; MOLECULAR PHYLOGENY ; NOV CILIOPHORA ; CILIATE CILIOPHORA ; SEQUENCE ALIGNMENT ; TREE SELECTION ; RIBOSOMAL-RNA ; SMALL-SUBUNIT ; MORPHOLOGY ; MORPHOGENESIS
语种: 英语
项目资助者: Natural Science Foundation of China(31401963 ; BBSRC China Partnering Award ; 31772477)
WOS记录号: WOS:000426529900010
ISSN号: 0300-3256
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50674
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Xi An Jiao Tong Univ, Sch Life Sci & Technol, Minist Educ, Key Lab Biomed Informat Engn, Xian, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Hubei, Peoples R China
3.Nat Hist Museum, Dept Life Sci, London, England
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