Morphology,taxonomy and molecular phylogeny of three marine peritrich ciliates,including two new species:Zoothamnium apoarbuscula n.sp.and Z.apohentscheli n.sp.(Protozoa,Ciliophora,Peritrichia)  

作　　者：Tong Wu Yuqing Li Borong Lu Zhuo Shen Weibo Song Alan Warren 

机构地区：[1]Laboratory of Protozoology.Institute of Evolution and Marine Biodiversity.Ocean University of China,Qingdao 266003,China [2]Institute of Microbial Ecology and Matter Cycle,School of Marine Sciences,Sun Yat-sen University.Zhuhai 519082,China [3]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519000.China [4]Department of Life Sciences,Natural History Museum,Cromwell Rd.London SW75BD,UK

出　　处：《Marine Life Science & Technology》2020年第4期334-348,共15页海洋生命科学与技术（英文）

基　　金：This work was supported by the Natural Science Foundation of China(project number:31801984.31772440,31970486);the Fundamental Research Funds for the Central Universities(No.201762017).

摘　　要：Zoothamnium is a speciose genus,most species of which have incomplete morphological data based on modern criteria.In the present study,the morphology of three species of Zoothamnium,i.e.,Z.apoarbuscula n.sp.,Z.apohentscheli n.sp.,and Z.alternans,collected in Qingdao,China,was revealed using living observation and silver staining.In addition,the SSU rDNA of each species was sequeneed for phylogenetic analyses.Zoothamnium apoarbuscula n.sp.is characterized by its umbellate colony which is up to 900 pm high,dichotomously branched stalk,differentiation of zooids,and infundibular polykinety 3 comprising three equal-length ciliary rows.Zoothamnium apohentscheli n.sp is characterized by its large colony up to 1700 pm high,alternately branched stalk,and infundibular polykinety 3 comprising three equal-length ciliary rows.A population of Z.altenums is described in detail.Phylogenetic analyses based on SSU rDNA sequence data revealed that species with an alternately branched stalk cluster together in gene trees and probably represent an independent lineage within the genus Zoothamnium.

关 键 词：Classification Novel species PERITRICHIA Sessilida SSU rDNA 

分 类 号：Q958[生物学—动物学]