茨城県中・南部地域でのセタリア属糸状虫媒介蚊の調査

概要

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Cerebrospinal setariosis, or lumbar paralysis, caused by infection with Setaria digitata to sheep and goats results in serious economic loss for stock farmers in Ibaraki Prefecture, Central Japan. Seasonal fluctuations of vector mosquitoes were studied using light traps from May to October during 1989 and 1990. The traps were set in the evening in cattle sheds and sheep sheds. A total of 168,970 female mosquitoes belonging to 9 species were collected by light traps. Culex tritaeniorhynchus was the most abundant species followed by Cx. pipiens pallens and Anopheles sinensis. However, An. sinensis was the most abundant mosquito during the Setaria transmission season of June and July. One out of 408 Cx. tritaeniorhynchus and four out of 312 An. sinensis dissected were found to carry thirdstage larvae of Setaria digitata. It is thus suspected that An. sinensis plays an important role in transmitting the larvae from cattle to sheep or goats in this area.
日本衛生動物学会の論文
1992-12-15