Molecular phylogeny and ultrastructure of a new population of Urostyla grandis(Ciliophora, Hypotrichida) from Harbin, China  

作　　者：CAI Xinglong CHEN Ying ZHAO Xiaolu GAO Jing Saleh A. AL-FARRAJ YU Lijie PAN Xuming QIU Zijian 

机构地区：[1]Laboratory of Protozoology, Harbin Normal University [2]Institute of Evolution & Marine Biodiversity, Ocean University of China [3]Zoology Department, College of Science, King Saud University

出　　处：《Journal of Oceanology and Limnology》2019年第1期256-265,共10页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(Nos.31471950,31101613,30970311);the Heilongjiang Postdoctoral Funding Project "Study on toxicology of intermediate-type filament system and other ultrastructures of ciliates"

摘　　要：A new population of Urostyla grandis, collected from a freshwater pond of northeastern China was investigated by living observation, silver impregnation, and molecular phylogeny based on small subunit ribosomal rRNA(SSU rRNA). Besides, its ultrastructural characteristics were investigated carefully by scanning electron microscopy(SEM) and transmission electron microscopy(TEM) methods.Complementary descriptions of some inner ultrastructures were provided and some new organelles were also found. Especially, the oral inner microtubule system was illustrated by SEM and TEM for the ?rst time and a new type extrusome was reported. These results may supply complement taxonomic data and ingestion mechanism on ciliates in genus Urostyla.A new population of Urostyla grandis, collected from a freshwater pond of northeastern China was investigated by living observation, silver impregnation, and molecular phylogeny based on small subunit ribosomal rRNA(SSU rRNA). Besides, its ultrastructural characteristics were investigated carefully by scanning electron microscopy(SEM) and transmission electron microscopy(TEM) methods.Complementary descriptions of some inner ultrastructures were provided and some new organelles were also found. Especially, the oral inner microtubule system was illustrated by SEM and TEM for the ?rst time and a new type extrusome was reported. These results may supply complement taxonomic data and ingestion mechanism on ciliates in genus Urostyla.

关 键 词：Urostyla grandis PHYLOGENY ULTRASTRUCTURE NEW POPULATION 

分 类 号：P[天文地球]