New contributions to the taxonomy of urostylid ciliates (Ciliophora,Hypotrichia), with establishment of a new genus and new species |
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| Affiliation: | 1. Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;2. Department of Zoology, Faculty of Science, Charles University, Prague 128 43, Czech Republic;3. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;1. Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro-UFRJ, 21491-590 Rio de Janeiro, RJ, Brazil;2. Instituto Nacional de Ciência e Tecnologia e Núcleo de Biologia Estrutural e Bioimagens – CENABIO, UFRJ, RJ, Brazil;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. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;2. State Key Laboratory of Marine Environmental Science, Institute of Marine Microbes and Ecospheres, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China;3. Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China;4. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;5. Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK;6. Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China;1. Laboratory of Protozoology, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou 510631, China;2. The Key Laboratory of Biomedical Information Engineering, Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China;3. Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;4. Department of Life Sciences, Natural History Museum, Cromwell Rd., London SW7 5BD, UK;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;1. Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, China;2. Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China;3. Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, UK;4. College of Life Sciences, Capital Normal University, Beijing, 100048, China;5. Shanghai Universities Key Laboratory of Marine Animal Taxonomy and Evolution, Shanghai Ocean University, Shanghai, 201306, China;6. Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, 201306, China;7. National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China |
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| Abstract: | Hypotrichia, one of the most complex and highly differentiated groups in Ciliophora, has been the object of extensive studies, especially in recent years. Nevertheless, methodological difficulties and insufficient faunistic studies have limited our understanding of their biodiversity and phylogeny. In this study, one novel urostylid ciliate, Pseudoholosticha zhaoi nov. gen., nov. spec. and two populations of Anteholosticha monilata (Kahl, 1928) Berger, 2003, type species of the latter genus, are studied using an integrative approach (live observation, protargol impregnation, scanning electron microscopy, and phylogenetic analysis) to provide further insights into the diversity, classification, and phylogeny of this group of ciliates. Pseudoholosticha nov. gen. can be separated from other morphologically similar genera mainly by the absence of buccal and caudal cirri. A key to 12 morphologically similar genera and illustrations of their cirral patterns are provided. The validation of the new genus and new species is supported by both morphological and phylogenetic analyses. The first 18S rRNA gene sequence of A. monilata, with detailed morphological data, provided a reliable clarification of A. monilata populations and corroborated the phylogenetic position of the type species of the polyphyletic genus Anteholosticha. |
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| Keywords: | Classification Hypotrichs Phylogeny 18S rRNA gene |
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