Effectiveness of Dowco 214 on some insects of public health importance : III. Laboratory evaluation tests for mosquitoes

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  • Dowco 214 の主要衛生害虫に対する殺虫効果 : III. 室内試験による蚊に対する殺虫効力評価
  • 室内試験による蚊に対する殺虫効力評価
  • シツナイ シケン ニ ヨル カ ニ タイスル サッチュウ コウリョク ヒョウカ

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Evaluation tests of the insecticidal activity of a new organophosphorus insecticide, Dowco[○!R] 214,O, O-dimethyl O-(3,5,6-trichloro-2-pyridyl) phosphorothioate, against the mosquitoes, Aedes aegypti, Culex pipiens pallens and Anopheles sinensis were carried out under the laboratory condition of 25±1℃ and 60±5% R. H. The effectiveness of Dowco 214 to larvae and pupae evaluated by dipping test was superior to that of fenitrothion. By the settling mist method, the knockdown effect of Dowco 214 to adults of A. aegypti was excellent. Dowco 214 showed long residual effect to pupae in tap and filthy water. It is presumed that Dowco 214 is one of the promising insecticides for mosquito control.

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