论文
论文标题: Morphology and molecular phylogeny of two new Aspidisca species (Ciliophora, Spirotrichea, Euplotida) collected from subtropical coastal waters in China
作者: Zheng, Bohan; Zhao, Xuetong; Ye, Tingting; Huang, Jie; Vallesi, Adriana; Jiang, Yaohan; Chen, Xiangrui
出版刊物: FRONTIERS IN MARINE SCIENCE
出版日期: AUG 8
出版年份: 2022
卷/期:
DOI: 10.3389/fmars.2022.970692
论文摘要: Ciliates are morphologically diverse and highly specialized unicellular eukaryotes that constitute an important component of the microbial food web. Aspidisca Ehrenberg, 1830, is a highly speciose genus that plays key ecological roles in a wide range of environments, and its species diversity has always been a hot spot in protozoan research. In this study, we investigate the living morphology, infraciliature, silverline system, and ribosomal small subunit (SSU rRNA) gene sequences of two new Aspidisca species collected from subtropical coastal waters of China using standard methods. Aspidisca spina sp. n. is characterized by having an obvious peristomial spur, two transparent posterior protrusions, seven frontoventral cirri in polystyla-arrangement, and six dorsal ridges. It can be distinguished from the most similar congener, A. magna Kahl, 1932, by the presence of posterior protrusions, more membranelles in the posterior part of adoral zone (AZM2), and different SSU rRNA gene sequences. A. shini sp. n. is smaller in body size, only 35-40 x 25-30 mu m in vivo, with four prominent ridges on the arched dorsal side, very similar with the well-known species A. steini Buddenbrock, 1920, in morphological characteristics, but it can be distinguished by the arrangement of frontoventral cirri and 121 nucleotide difference in the SSU rRNA gene sequences. Phylogenetic analyses based on the SSU rRNA gene sequences revealed the systematic positions of two new taxa and supported the validity of them as distinct species.
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  • 水产品种创制与高效养殖全国重点实验室
  • 中国科学院藻类生物学重点实验室
  • 农业部淡水养殖病害防治重点实验室
  • 武汉白暨豚保护基金会
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  • 中国动物学会原生动物学分会
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  • 中国鱼类学会
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  • “一带一路”海域赤潮数据库
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  • 中国科学院水生生物研究所分析测试中心
  • 中国科学院超级计算武汉分中心
  • 水生生物博物馆
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