Phylogenetic position of <i>Nyctotherus teleacus</i> isolated from a tortoise (<i>Astrochelys radiata</i>) and its electron microscopic features
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- SUZUKI Jun
- Division of Food Microbiology, Department of Microbiology, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku-ku, Tokyo 169-0073, Japan
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- KOBAYASHI Seiki
- Department of Infectious Diseases, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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- YOSHIDA Naoko
- Department of Infectious Diseases, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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- AZUMA Yoshiyuki
- Laboratory of Animal and Human Nutritional Physiology, Kitasato University School of Veterinary Medicine, 35-1 Higashi, 23-bancho, Towada-shi, Aomori 034-8628, Japan
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- KOBAYASHI-OGATA Namiko
- Center for Advanced Marine Core Research, Kochi University, 200 Mononobe Otsu, Nangoku-shi, Kochi 783-8502, Japan
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- KARTIKASARI Dwi Peni
- Department of Parasitology, Faculty of Medicine, Universitas Airlangga, Kampus A UNAIR, Jl. Prof. Moestopo 47 Surabaya, 60132, Indonesia
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- YANAGAWA Yasuaki
- AIDS Clinical Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
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- IWATA Satoshi
- Department of Infectious Diseases, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
抄録
<p>A commensal ciliate was isolated from the stool of a tortoise (Astrochelys radiata). The ciliate was classified as Nyctotherus teleacus, according to its basic morphological features. Electron microscopic observations using cultured N. teleacus (NictoT1 strain) revealed many spherical hydrogenosomes and methanogen-suspected bacteria, together with a characteristic triangular macronucleus containing many spherical chromosomes in the cytoplasm of NictoT1. The results of phylogenetic analysis showed that NictoT1 was included in the cluster of Nyctotheroides spp. (family Nyctotheridae). Nyctotheroides spp. commonly infest amphibians, which are taxonomically closely related to reptiles, including the tortoises evaluated in the present study.</p>
収録刊行物
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- Ｔｈｅ Ｊｏｕｒｎａｌ ｏｆ Ｖｅｔｅｒｉｎａｒｙ Ｍｅｄｉｃａｌ Ｓｃｉｅｎｃｅ
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Ｔｈｅ Ｊｏｕｒｎａｌ ｏｆ Ｖｅｔｅｒｉｎａｒｙ Ｍｅｄｉｃａｌ Ｓｃｉｅｎｃｅ 82 (6), 699-703, 2020
公益社団法人 日本獣医学会
