A case of mycobacteriosis associated with Mycobacterium
pseudoshottsii in aquarium-reared fish in Japan |
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| Authors: | Takeshi KOMINE Hyogo IHARA Kentaro ONO Mitsumi YOSHIDA Yuma SUGIMOTO Mari INOHANA Hanako FUKANO Osamu KURATA Shinpei WADA |
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| Affiliation: | 1)Laboratory of Aquatic Medicine, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan;2)Tokyo Sea Life Park, Tokyo, Japan;3)Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan |
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| Abstract: | In 2019, several aquarium-reared fish died at a sea life park in Japan. Necropsy revealed micronodules on the spleen in the dotted gizzard shad (Konosirus punctatus). Seven of 16 fish exhibited microscopic multifocal granulomas associated with acid-fast bacilli in the spleen, kidney, liver, alimentary tract, mesentery, gills, and/or heart. Bacterial cultures yielded isolates from the dotted gizzard shad and a Japanese sardine (Sardinops melanostictus). Microbiological and molecular biological examinations revealed the isolates as Mycobacterium pseudoshottsii. To our knowledge, this is the first isolation of M. pseudoshottsii from aquarium-reared fish. |
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| Keywords: | aquarium-reared fish Mycobacterium pseudoshottsii mycolactone-producing mycobacteria nontuberculous mycobacteria |
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