Survey of ixodid ticks (Acarina : Ixodidae) and tick-borne spotted fever group rickettsiae in Tokunoshima Island, Japan

  • FUJITA H
  • TAKADA N
  • TSUBOI Y
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Abstract

鹿児島県の徳之島における紅斑熱の発生を契機に, 1991年から1994年に同島のマダニ相と紅斑熱群リケッチアの調査を実施した。採集できたマダニ類はタカサゴキララマダニ, タイワンカクマダニ, タカサゴチマダニ, ヤマアラシチマダニ, フタトゲチマダニ, クロウサギチマダニ, ミナミネズミマダニおよびチマダニ属未同定1種(sp. T by Kitaoka)の4属8種で, 既報のオウシマダニを加えると, 同島からは5属9種が確認されたことになる。一部のマダニ類について試みたリケッチア分離においては, タカサゴキララマダニの未寄生期幼虫から8株を得た。これらの分離株は四国から報告されたタカサゴキララマダニ由来の不明紅斑熱群リケッチアと同一の血清型とみなされた。 During the years 1991 to 1994,the fauna of ixodid ticks and tick-borne spotted fever group rickettsiae in Tokunoshima Island, one of the Nansei Islands in Japan was surveyed to clarify the epidemiological background of spotted fever group rickettsiosis on this Island. A total of 304 ticks collected were the following 4 genera and 8 species; Amblyomma testudinarium, Dermacentor taiwanensis, Haemaphysalis formosensis, H. hystricis, H. longicornis, H. pentalagi, Haemaphysalis sp. T and Ixodes granulatus. Of 90 ticks consisting of A. testudinarium, D. taiwanensis, H. formosensis, H. hystricis and H. sp. T examined for rickettsiae, A. testudinarium yielded 8 strains which were the first isolates from ticks in Tokunoshima Island. Serotyping showed that the present all isolates were the unclassified AT-1 serotype belonging to the spotted fever group isolated from A. testudinarium in Shikoku, Japan.

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FUJITA, H., TAKADA, N., & TSUBOI, Y. (1996). Survey of ixodid ticks (Acarina : Ixodidae) and tick-borne spotted fever group rickettsiae in Tokunoshima Island, Japan. Medical Entomology and Zoology, 47(1), 15–21. https://doi.org/10.7601/mez.47.15

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