Insecticidal effect of a synthetic pyrethroid, cyfluthrin on adult house flies, Musca domestica.
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概要
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A synthetic pyrethroid, cyfluthrin, was evaluated for its insecticidal effect on adult house flies, <I>Musca</I> <I>domestica</I>. The house flies used were of the susceptible Takatsuki strain, pyrethroid and organophosphateresistant Kyushu and Komagane strains, and organophosphate-resistant Yumenoshima-87 strain. Thrity female flies, 3-5 days old, of each strain were respectively put in 10 trapezoid-hexahedral cages, made of cardboard, measuring 30cm × 30cm in the upper open area covered with stainless mesh, 19cm × 19cm in the bottom area, and 8cm in depth. One cage was assigned as a non-treated control, and another was sprayed with tap water in a volume of 50m<I>l</I>/m<SUP>2</SUP>. Four cages were sprayed with 125-, 250-, 500-, and 1000-fold dilutions of cyfluthrin 5%(W/W) emulsion at a rate of 50m<I>l</I>/m<SUP>2</SUP>. To the other 4 cages, 100-, 200-, 400-, and 800-fold dilutions of a mixture (at a ratio of 1: 5 calculated as active ingredients) of cyfluthrin 5% emulsion and piperonyl butoxide as a synergist were sprayed at a rate of 50m<I>l</I>/m<SUP>2</SUP>. These 4 dilutions were equivalent to those of the 125-, 250-, 500-, and 1000-fold dilutions of the 5% emulsion. As a result, cyfluthrin had a nearly 100% efficacy against Takatsuki and Yumenoshima-87 strains of house flies, when used both singly or mixed with piperonyl butoxide. On the other hand, for pyrethroid-resistant Kyushu and Komagane strains, cyfluthrin was less effective when applied singly, but it showed a high knock down and low revival rates on flies when mixed with piperonyl butoxide.
- 公益社団法人 日本獣医師会の論文
公益社団法人 日本獣医師会 | 論文
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