Morphology and Phylogeny of Two Novel Ciliates, Arcanisutura chongmingensis n. gen., n. sp. and Naxella paralucida n. sp. from Shanghai, China.
Morphology and Phylogeny of Two Novel Ciliates, Arcanisutura chongmingensis n. gen., n. sp. and Naxella paralucida n. sp. from Shanghai, China.
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两种新型纤毛虫Arcanisutura chongmingensis n.的形态学和系统发育。
DOI：
10.1111/jeu.12431
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发表时间：
2018
影响因子：
2.2
通讯作者：
Gu Fukang
中科院分区：
文献类型：
--
作者：
Liao Wanying;Fan Xinpeng;Zhang Qianqian;Xu Yuan;Gu Fukang
两种新纤毛虫的形态特征。gen.，n. sp.和纳氏藻（Naxella acrucidan）。sp.，采用活体观察和银染法对采自上海的10种常见的骨肉瘤进行了研究。通过其不明显的斜前缝，可以很容易地将其与相关属区分开来。主要特征为：体细长，尾部呈尾状，体节25-33个，排泄孔4-11个。sp.的两个短鼻形细胞器、梭形胞囊、37-49个体细胞动丝和16个丝杆可与其同类区分开来。本文还对这两个种的小亚基（SSU）rRNA基因序列进行了分析，揭示了Arcanisutura和Naxella的系统发育位置。系统发育分析表明，Arcanisutura形成了一个姐妹分支，其他合膜科属，即Chilodontopsis，Orthodonella和Zosterodasys; Naxella是最接近Nassulaspp。并位于单系分支的家庭Nassulidae。
The morphologies of two novel ciliates,Arcanisutura chongmingensisn. gen., n. sp. andNaxella paralucidan. sp., collected from Shanghai, China, have been investigated using live observation and silver staining methods.Arcanisuturan. gen. can be easily distinguished from related genera by its inconspicuous, oblique anterior suture.Arcanisutura chongmingensisn. sp. is mainly recognized by its elongated body with a tail‐like posterior end, 25–33 somatic kineties, and 4–11 excretory pores.Naxella paralucidan. sp. can be distinguished from its congeners based on its two short nassulid organelles, fusiform trichocysts, 37–49 somatic kineties, and 16 nematodesmal rods. The small‐subunit (SSU) rRNA gene sequences of these two species are presented, revealing the phylogenetic positions ofArcanisuturaandNaxella. Phylogenetic analyses show thatArcanisuturaforms a sister clade to other synhymeniid genera, namely,Chilodontopsis,Orthodonella, andZosterodasys;Naxellais most closely related toNassulaspp. and is located within the monophyletic clade of the family Nassulidae.