Integrative Studies on a New Ciliate Campanella sinica n. sp. (Protista, Ciliophora, Peritrichia) Based on the Morphological and Molecular Data, With Notes on the Phylogeny and Systematics of the Family Epistylididae

被引:12
|
作者
Wang, Zhe [1 ,2 ]
Wu, Tong [2 ]
Lu, Borong [2 ]
Chi, Yong [2 ]
Zhang, Xue [2 ]
Al-Farraj, Saleh A. [3 ]
Song, Weibo [1 ,2 ,4 ]
Warren, Alan [5 ]
Li, Lifang [1 ]
Wang, Chundi [1 ]
机构
[1] Shandong Univ, Marine Coll, Weihai, Peoples R China
[2] Ocean Univ China, Inst Evolut & Marine Biodivers, Key Lab Mariculture, Minist Educ, Qingdao, Peoples R China
[3] King Saud Univ, Coll Sci, Dept Zool, Riyadh, Saudi Arabia
[4] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
[5] Nat Hist Museum, Dept Life Sci, London, England
关键词
rDNA sequences; morphology; peritrichs; sessilid ciliate; phylogenetic analyses; SUBCLASS PERITRICHIA; INCLUDING; 2; OLIGOHYMENOPHOREA; ZOOTHAMNIUM; PROTOZOA; UMBELLARIA; EVOLUTION; TAXONOMY; LIGHT; GENUS;
D O I
10.3389/fmicb.2021.718757
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
During an investigation on freshwater peritrichs, a new colonial sessilid ciliate, Campanella sinica n. sp., was isolated from aquatic plants in an artificial freshwater pond in Qingdao, China. Specimen observations of this species were performed both in vivo and using silver staining. C. sinica n. sp. is characterized by the appearance of the mature colony, which is up to 2 cm high and contains more than 1,000 zooids, the asymmetric horn-shaped zooids, strongly everted and multi-layered peristomial lip, the slightly convex peristomial disc, and the well-developed haplokinety and polykinety, which make more than four circuits of the peristome before descending into the infundibulum. The small subunit ribosomal DNA (SSU rDNA), 5.8s rDNA and its flank internal transcribed spacers (ITS1-5.8s rDNA-ITS2), and large subunit ribosomal DNA (LSU rDNA) are sequenced and used for phylogenetic analyses which reveal that the family Epistylididae Kahl, 1933 is non-monophyletic whereas the genus Campanella is monophyletic and nests within the basal clade of the sessilids. The integrative results support the assertion that the genus Campanella represents a separate lineage from other epistylidids, suggesting a further revision of the family Epistylididae is needed. We revise Campanella including the transfer into this genus of a taxon formerly assigned to Epistylis, which we raise to species rank, i.e., Campanella ovata (Nenninger, 1948) n. grad. & n. comb. (original combination Epistylis purneri f. ovata Nenninger, 1948). In addition, we provide a key to the identification of the species of Campanella.
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页数:12
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