Does the Gonostomum-patterned oral apparatus in hypotrichia carry a phylogenetic signal?Evidence from morphological and molecular data based on extended taxon sampling using three nuclear genes(Ciliophora,Spirotrichea)

作     者：Jingyi Wang Yan Zhao Xiaoteng Lu Zhao Lyu Alan Warren Chen Shao Jingyi Wang;Yan Zhao;Xiaoteng Lu;Zhao Lyu;Alan Warren;Chen Shao

作者机构：Laboratory of Protozoological Biodiversity and Evolution in WetlandCollege of Life SciencesShaanxi Normal UniversityXi'an 710119China College of Life SciencesCapital Normal UniversityBeijing 100048China Institute of Evolution&Marine BiodiversityOcean University of ChinaQingdao 266003China College of Life SciencesNorthwest UniversityXi’an 710069China Department of Life SciencesNatural History MuseumLondon SW75BDUK 

出 版 物：《Science China(Life Sciences)》 (中国科学（生命科学英文版）)

年 卷 期：2021年第64卷第2期

页      面：311-322页

核心收录：

学科分类：0710[理学-生物学] 1007[医学-药学(可授医学、理学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 100705[医学-微生物与生化药学] 07[理学] 071005[理学-微生物学] 10[医学] 

基　　金：supported by National Natural Science Foundation of China(31872190) 

主　　题：Gonostomatidae gonostomatid oral apparatus multigene phylogeny Schmidingerotrichidae 

摘      要：The classification of hypotrichs based on the gonostomatid oral structure is widely accepted,but the phylogenetic signal of this character is ***,we infer the species phylogeny of those gonostomatids for which molecular data are available,plus26 new sequences of SSU-rDNA,ITS1-5.8 S-ITS2 and LSU-rDNA *** results indicate that:(i)the endoral is more phylogenetically informative than the paroral;(ii)the structure of the endoral and the Gonostomum-pattern adoral zone of membranelles are plesiomorphies for the hypotrichs sensu stricto;(iii)the group of species possessing these features is monophyletic in all our phylogenetic analyses,except that for the SSU-rDNA;(iv)Schmidingerotrichidae is monophyletic in all trees,suggesting that it is a well-defined family;(v)the Gonostomatidae is polyphyletic in the SSU-rDNA and ITS1-5.8 S-ITS2 trees,with Gonostomum,Cladotricha,Cotterillia,Metagonostomum,Paragonostomum and Wallackia distributed among separate clades,but monophyletic in the LSU-rDNA and concatenated trees;(vi)higher hypotrich taxa such as core urostyloids and core sporadotrichids/stichotrichids might have evolved from species that possessed a gonostomatid oral apparatus.