Morphological and phylogenetical studies on a new soil hypotrich ciliate: Kahliella matisi spec. nov. (Hypotrichia,Kahliellidae) |
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| Authors: | Peter Vďačný Eva Tirjaková Tímea Tóthová Peter Pristaš Peter Javorský |
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| Institution: | 1. Department of Zoology, Faculty of Natural Sciences, Comenius University, Mlynská dolina B-1, SK-84215 Bratislava, Slovak Republic;2. Institute of Chemistry, Department of Biochemistry, Faculty of Natural Sciences, P.J. ?afárik University, SK-04001 Ko?ice, Slovak Republic;3. Institute of Animal Physiology, Slovak Academy of Sciences, ?oltésovej 4–6, SK-04001 Ko?ice, Slovak Republic;1. Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China;2. School of Ocean, Yantai Academy, China Agricultural University, Yantai 264670, China;3. School of Ocean, Yantai University, Yantai 264005, China;4. Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, China;5. Zoology Department, King Saud University, Riyadh 11451, Saudi Arabia;1. Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;2. Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;3. Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada;1. 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 Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China;4. Department of Zoology, King Saud University, Riyadh 11451, Saudi Arabia;5. Department of Biology, North Carolina Central University, Durham, 1801 Fayetteville St., NC 27707, USA;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. The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China;2. The Key Laboratory of Biomedical Information Engineering, Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China;3. School of Life Sciences, East China Normal University, Shanghai 200241, China;4. Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;5. Consulting Engineering Office for Ecology, Radetzkystrasse 10, 5020 Salzburg, Austria |
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| Abstract: | The morphology, ontogenesis, encystment, and 18S rRNA gene sequence of a new soil hypotrich ciliate, Kahliella matisi, were studied. Main characteristics of K. matisi are: (1) two short and six longitudinal cirral rows right of the adoral zone of membranelles and four longitudinal rows left of it; (2) three dorsal kineties, of which kinety 1 extends along the left cell margin, kinety 2 runs in a slightly sigmoidal line, and kinety 3 is distinctly shortened posteriorly. Ontogenesis is similar to that in congeners, especially in the development of the marginal rows and long dorsal kineties, the preservation of some old cirral rows after division, and the direction of the neokinetal wave. However, there are some peculiarities: (1) reorganization of the proximal parental adoral membranelles; (2) splitting of opisthe's anlage II into the cirral streak II and III; and (3) formation of the parental cirral row R3 from anlagen IV and V. During encystment, the body diminishes and becomes globular, the nuclear apparatus is reorganized, and the ciliature is resorbed. In our molecular phylogenies, the family Kahliellidae is polyphyletic and the position of K. matisi is rather poorly resolved, indicating a relationship with oxytrichids. |
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