Morphology and molecular phylogeny of two new soil ciliates,Hemiurosomoida warreni nov. spec. and Hemiurosoma clampi nov. spec. (Ciliophora,Hypotrichia) from Tibet |
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| Institution: | 1. Laboratory of Microbiota, College of Life Science, Northwest Normal University, Lanzhou 730070, China;2. Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China;3. College of Fisheries, Ocean University of China, Qingdao 266003, China;4. Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, School of Life Science, South China Normal University, Guangzhou 510631, China;1. Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi’an 710119, China;2. Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China;3. Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;1. The Key Laboratory of Biomedical Information Engineering, Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China;2. University of Innsbruck, Research Institute for Limnology, Mondseestrasse 9, 5310 Mondsee, Austria;3. Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China;4. Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;5. Consulting Engineering Office for Ecology, Radetzkystrasse 10, 5020 Salzburg, Austria;1. Department of Biology, Gangneung-Wonju National University, Gangneung, South Korea;2. Consulting Engineering Office for Ecology, Radetzkystrasse 10, 5020 Salzburg, Austria;1. Division of Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea;2. Department of Biological Sciences, Inha University, Incheon 22212, South Korea;3. Institute of Life Science & Natural Resources, Korea University, Seoul 02841, South Korea;4. Department of Biology, Gangneung-Wonju National University, Gangneung 25457, South Korea;5. Consulting Engineering Office for Ecology, Radetzkystrasse 10, 5020 Salzburg, Austria;1. The Key Laboratory of Biomedical Information Engineering, Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China;2. Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Youyi Xilu 127, 710072 Xi’an, China |
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| Abstract: | Two novel hypotrichous ciliates, Hemiurosomoida warreni nov. spec. and Hemiurosoma clampi nov. spec., isolated from soil in the Lhalu Wetland and Motuo Virgin Forest in Tibet, respectively, were investigated using live observation and protargol staining. Hemiurosomoida warreni nov. spec. strongly resembles the type species H. longa but can be distinguished by its body size in vivo (110–145 × 30–40 μm vs. 50–100 × 18–40 μm), number of adoral membranelles (25–38 vs. 15–22), and numbers of right (29–39 vs. 14–23) and left (26–35 vs. 13–23) marginal cirri, transverse cirri (3 vs. 4 or 5) and macronuclear nodules (4–8 vs. 2). Hemiurosoma clampi nov. spec. is characterized by its vermiform body shape, colourless cortical granules distributed in irregular rows, two macronuclear nodules, three frontal cirri, one buccal cirrus, four frontoventral cirri ranged in a line, two transverse cirri, lacking postoral ventral and pretransverse ventral cirri, and marginal rows that are not posteriorly confluent. Phylogenetic analyses based on SSU rDNA gene sequences suggest that Hemiurosomoida is not monophyletic. A close relationship is revealed between Hemiurosomoida warreni nov. spec., Parakahilella macrostoma, Hemiurosoma clampi nov. spec., and the type species Hemiurosoma terricola. As expected, all these species are classified within the “non-oxytrichid Dorsomarginalia”. |
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| Keywords: | Hypotrichia Molecular systematics SSU rDNA Taxonomy |
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