Morphology,morphogenesis and molecular phylogeny of a new marine ciliate,Trichototaxis marina n. sp. (Ciliophora,Urostylida) |
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| Institution: | 1. Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, 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. Department of Life Sciences, Natural History Museum, London SW7 5BD, UK;1. Universität Salzburg, FB Organismische Biologie, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria;2. Inha University, Biological Sciences, 402-251 Incheon, South Korea;3. Universität Kaiserslautern, FB Biologie, Erwin-Schrödingerstrasse 14, D-67663 Kaiserslautern, Germany;1. National Centre for Mari^#^ne Conservation and Resource Sustainability, University of Tasmania, Locked Bag 1370, Launceston, Tasmania, Australia;2. Department of Veterinary Science, The University of Melbourne, Werribee, Victoria, Australia;3. Faculty of Science, Masaryk University, Kotlá?ská 2, Brno, Czech Republic;4. Department of Bioinformatics, University of Würzburg, Am Hubland, 97074 Würzburg, Germany;5. Fish Health Unit, Department of Primary Industries, Parks, Water & Environment, 165 Westbury Road, Prospect, Tasmania, Australia;1. Department of Biological Science, College of Natural Sciences, University of Ulsan, Ulsan 680-749, South Korea;2. Department of Zoology, Faculty of Natural Sciences, Comenius University, Mlynská dolina B-1, 842 15 Bratislava, Slovak Republic;1. Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity & College of Fisheries, Ocean University of China, Qingdao 266003, China;2. Faculty of Fisheries, Nagasaki University, Bunkyo machi 1-14, Nagasaki 852-8521, Japan;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 |
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| Abstract: | The live morphology, infraciliature and morphogenesis of a new urostylid ciliate, Trichototaxis marina n. sp., collected from coastal water in Qingdao, China, were studied based on the observations of live and silver stained specimens. The new species is characterised as follows: body very flexible and contractile, slight to brick-reddish in colour due to irregularly-shaped, brick-red pigments; ca. 70 adoral membranelles; about 17 frontal cirri arranged in a bicorona; average 67 midventral pairs, the right base of each pair being conspicuously larger than the left base; five to seven transverse cirri; constantly two frontoterminal, one buccal and two pretransverse ventral cirri; two or three left marginal rows; right and innermost left marginal rows with 56–92 and 66–106 cirri, respectively; six bipolar dorsal kineties; more than 100 macronuclear nodules. The characteristic morphogenetic feature in T. marina is the development of the left marginal rows, that is, only one left marginal row is newly built the other one or two being retained from the parental cell. Phylogenetic analyses based on small subunit ribosomal gene sequence data reveal a close relationship of T. marina with members of family Pseudokeronopsidae. |
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| Keywords: | Infraciliature Marine ciliates Ontogenesis SSU rDNA |
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