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蚊体内におけるマレー糸状虫(済州島系)のミクロフィラリアの脱鞘と移動


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Title: 蚊体内におけるマレー糸状虫(済州島系)のミクロフィラリアの脱鞘と移動
Other Titles: Exsheathment and Migration of Microfilariae of Brugia malayi (Che-ju Strain) in Mosquitoes
Authors: 小田, 力 / 和田, 義人
Authors (alternative): Oda, Tsutomu / Wada, Yoshito
Issue Date: 28-Mar-1980
Publisher: 長崎大学熱帯医学研究所 / Institute of Tropical Medicine, Nagasaki University
Citation: 熱帯医学 Tropical medicine 22(1). p27-33, 1980
Abstract: 済州島系のマレー糸状虫に感染したネコから長崎系のトウゴウヤブカ,ヒトスジシマカ,オオクロヤブカ,及びアカイエカに吸血させ,ミクロフィラリアの蚊の胃内での脱鞘の程度,胸筋への移動とその後の幼虫の発育の状況を調べた.トウゴウヤブカ及びヒトスジシマカでは,ミクロフィラリアは胃内で高率に脱鞘して胸筋に移動した.これらの幼虫はトウゴウヤブカ体内ではIII期幼虫にまで発育したが,ヒトスジシマカではlII期幼虫まで発育したものはなかった.オオクロヤブカの胃の中でも,ミクロフィラリアはかなり脱鞘し,少数のものは胸筋に移動した.しかし,これら幼虫はすべてI期で死亡した.アカイエカでは,胃の中にとりこまれたミクロフィラリアの極く少数が脱鞘したが,胸筋に移行するものも極めて少数であり,III期幼虫まで発育したものはなかった.以上のことから,本種のミクロフィラリアの蚊の胃内での脱鞘は胸筋への移動と密接な関連を持つことがわかる. / Observations were made on the exsheathment and migration of microfilariae of Brugia malayi in mosquitoes. In Aedes togoi and Aedes albopictus, the microfilariae ingested into the midgut commonly exsheathed and migrated to the thorax. The larvae which moved to the thorax in the former mosquito developed to the 3rd stage, but in the latter the larvae did not grow even to the 2nd stage. The microfilariae in Armigeres subalbatus also cast off the sheath in the stomach at a moderate rate, whereas, those which moved to the thorax were small in number, and did not develop any further. On the other hand, in Culex pipiens pollens, most of the microfilariae did not exsheathe and died without migrating to the thorax. Therefore, it can be said that the exsheathment of microfilariae of B. malayi in the midgut of mosquitoes has a close relation with their migration to the thorax.
URI: http://hdl.handle.net/10069/4271
ISSN: 03855643
Type: Departmental Bulletin Paper
Appears in Collections:Volume 22, No. 1

Citable URI : http://hdl.handle.net/10069/4271

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