Taxonomic and phylogenetic studies on two new freshwater Amphileptus species (Ciliophora, Pleurostomatida), from Lake Weishan, northern China

被引:9
|
作者
Zhang, Gongaote [1 ,2 ]
Chi, Yong [1 ]
Wang, Zhe [1 ]
Wang, Ya [3 ]
Liu, Ran [3 ]
Warren, Alan [4 ]
Zhao, Yan [5 ]
Pan, Hongbo [2 ]
机构
[1] Ocean Univ China, Inst Evolut & Marine Biodivers, Qingdao 266003, Peoples R China
[2] Shanghai Ocean Univ, Shanghai Univ Key Lab Marine Anim Taxon & Evolut, Shanghai 201306, Peoples R China
[3] Weishan Fishery Dev Serv Ctr, Jining 277600, Peoples R China
[4] Nat Hist Museum, Dept Life Sci, London, England
[5] Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China
基金
北京市自然科学基金;
关键词
Amphileptidae; Morphology; Phylogeny; SSU rDNA; NOV SPEC. CILIOPHORA; CILIATES CILIOPHORA; MOLECULAR PHYLOGENY; SP-N; PROTOZOA; MORPHOLOGY; LITOSTOMATEA; WILBERT; AREA; SONG;
D O I
10.1016/j.ejop.2021.125854
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The morphology and phylogeny of two new species of pleurostomatid ciliates, Amphilepus weishanensis sp. nov. and A. parapleurosigma sp. nov., collected from Lake Weishan in northern China, were studied using live observation, protargol staining and phylogenetic analyses based on small subunit ribosomal DNA (SSU rDNA) sequence data. In both species, extrusomes form an apical group and contractile vacuoles are distributed along both the dorsal and the ventral margin. Amphileptus weishanensis sp. nov. is characterized by its body size (560-780 x 60-100 lm in vivo) and the possession of five left and 56-61 right somatic kineties, filiform extrusomes and 3-9 macronuclear nodules. Amphileptus parapleurosigma sp. nov. is characterized by possessing 4-6 left and 19-24 right somatic kineties and clavate extrusomes. The SSU rDNA sequences differ among ten similar species by 3-60 bp. Phylogenetic analyses based on the SSU rDNA sequences indicate that the family Amphileptidae is monophyletic while Amphileptus is paraphyletic with Pseudoamphileptus nesting within this genus. (C) 2021 Elsevier GmbH. All rights reserved.
引用
收藏
页数:14
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