Morphology,morphogenesis, and molecular phylogeny of a novel saline soil ciliate,Heterourosomoida sinica n. sp. (Ciliophora,Hypotrichia) |
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| Institution: | 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, Youyi Xilu 127, 710072, Xi’an, Shaanxi, China;1. Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea;2. Department of Biological Sciences, Inha University, Incheon 22212, South Korea;3. Department of Biological Resources Research, National Institute of Biological Resources, Incheon 22689, South Korea;4. Department of Biology, Gangneung-Wonju National University, Gangneung 25457, South Korea;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. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;2. Marine College, Shandong University, Weihai 264209, China;3. Department of Biological Sciences, University of Ulsan, Ulsan 44610, Korea;4. Department of Biological Sciences, Boise State University, Boise 83725, USA;5. Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou 510631, China;1. Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2. Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: | The living morphology, infraciliature, morphogenesis and phylogenetic position of a new hypotrichous ciliate, Heterourosomoida sinica n. sp., discovered in saline soil in Northwest of China, were investigated. Heterourosomoida sinica n. sp. is characterized as follows: body size about 70–95 × 20–30 μm in vivo, ellipsoid or elongate; cortical granules dark green, 0.5 μm across, arranged around dorsal cilia and in short irregular rows on ventral side; consistently 18 frontoventral-transverse cirri; left and right marginal rows composed of 17–24 and 13–21 cirri, respectively; two macronuclear nodules and one or two micronuclei. The detailed morphogenesis of a species of Heterourosomoida is reported for the first time. The ontogenesis on dorsal side is basically similar to that in Urosomoida-species and the process on ventral side is characterized by: 18 frontoventral-transverse cirri develop from six anlagen with the anlagen V and VI formed in the primary mode. Phylogenetic analyses based on SSU rDNA sequence data reveal that Heterourosomoida sinica n. sp. clusters with Kleinstyla dorsicirrata and forms a clade with the type species H. lanceolata. |
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| Keywords: | Hypotrichs New species Ontogenesis Phylogeny SSU rDNA |
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