Report and Phylogeny of a Novel Euplotes Species from China:E.mazeii n.sp.,and Review of E.balteatus(Alveolata,Ciliophora)  

作　　者：LIAN Chunyu JIANG Jiamei XI Muchen DONG Jingyi MA Honggang AL-FARRAJ Saleh A STOECK Thorsten WANG Chundi SHAO Chen 

机构地区：[1]Laboratory of Protozoological Biodiversity and Evolution in Wetland,College of Life Sciences,Shaanxi Normal University,Xi’an 710119,China [2]Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution,Shanghai Ocean University,Shanghai 201306,China [3]Institute of Evolution and Marine Biodiversity,Ocean University of China,Qingdao 266003,China [4]Zoology Department,College of Science,King Saud University,Riyadh 11451,Saudi Arabia [5]Department of Ecology,University of Kaiserslautern,Kaiserslautern 67663,Germany [6]Marine College,Shandong University,Weihai 264209,China

出　　处：《Journal of Ocean University of China》2023年第3期831-841,共11页中国海洋大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.32030015,32111530116);the China Postdoctoral Science Foundation Grant(No.2021M701993);the Fundamental Research Funds for the Central Universities(No.GK202207019)。

摘　　要：The freshwater species,Euplotes mazeii n.sp.,and the marine species,E.balteatus(Dujardin,1841)Diesing,1850 were collected from China and investigated based on their living morphology,ciliary pattern,and small subunit ribosomal RNA(SSU rRNA)gene sequence data.Euplotes mazeii n.sp.was characterized by its small cell size((40-55)μm×(25-35)μm),nine frontoventral cirri,one marginal and two caudal cirri,seven dorsal kineties,and a double-eurystomus type of dorsal silverline system.Phylogenetic analyses based on molecular data confirmed the branching position of this new taxa within the genus Euplotes,with 5.01%(84 nucleotides)sequence variation,supporting the identification of a new species.We re-examined all described and supposedly conspecific populations and give a review of Euplotes balteatus.E.balteatus has been reported frequently;however,E.balteatus sensu Agamaliev,1968 is different from other populations in the number of marginal cirri or the type of silverline system,which suggests there might be a misidentification.The SSU rRNA gene sequences of two populations of E.balteatus from the studies of Chen et al.(2013)and Pan et al.(2012)differ from each other by more than 135 nucleotides,implying that the identity of the species currently associated with the SSU rRNA gene sequence in molecular databases requires further confirmation.

关 键 词：BIODIVERSITY molecular analysis morphology systematic placement 

分 类 号：Q959.11[生物学—动物学]