Author:
Luo Xiaotian,Huang Jie,Bourland William A.,El-Serehy Hamed A.,Al-Farraj Saleh A.,Chen Xumiao,Song Weibo
Abstract
Two oxytrichid ciliates collected from China, Oxytricha lithofera Foissner, 2016 and Rubrioxytricha haematoplasma (Blatterer and Foissner, 1990) Berger, 1999 were investigated based on living observations, protargol preparations, and molecular analyses. The Chinese population of O. lithofera shares highly distinctive features with the type population, e.g., lithosomes, abutting macronuclear nodules, straight undulating membranes, and long dorsal bristles. The morphology and morphogenesis of our new isolate of R. haematoplasma corresponds well with the type population. The 18S rRNA gene sequences of both species were obtained, and the molecular phylogeny of the genera Oxytricha Bory de Saint-Vincent in Lamouroux et al., 1824 and Rubrioxytricha Berger, 1999 was analyzed. In addition, we found that the Guangzhou population of R. haematoplasma described by Chen et al. (2015) can be distinguished from the type population and our isolate by the reddish-brown cortical granules (vs. lemon yellowish to greenish) and mitochondria-like granules present (vs. absent), as well as the slightly red cytoplasm (vs. slightly orange) and the marine or brackish water habitat (vs. freshwater). In addition, a 20-bp divergence in their 18S rRNA gene sequences indicates that they are not conspecific. Thus, we establish a new species, Rubrioxytricha guangzhouensis, for R. haematoplasma sensu Chen et al. (2015).
Subject
Ocean Engineering,Water Science and Technology,Aquatic Science,Global and Planetary Change,Oceanography
Reference53 articles.
1. Monograph of the Oxytrichidae (Ciliophora, Hypotrichia).;Berger,1999
2. Monograph of the Amphisiellidae and Trachelostylidae (Ciliophora, Hypotricha).;Berger,2008
3. Beiträge zur ciliatenfauna (Protozoa: Ciliophora) der Amper (Bayern, Bundesrepublik Deutschland).;Blatterer;Arch. Protistenkd.,1990
4. Morphology and molecular phylogeny of a new hypotrich ciliate, Anteholosticha songi nov. spec., and an American population of Holosticha pullaster (Müller, 1773) Foissner et al., 1991 (Ciliophora, Hypotrichia).;Chen;Eur. J. Protistol.,2020
5. Morphology and phylogeny of two new ciliates, Sterkiella sinica sp. nov. and Rubrioxytricha tsinlingensis sp. nov. (Protozoa, Ciliophora, Hypotrichia) from north-west China.;Chen;Syst. Biodivers.,2017
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献