Effect of pyriproxyfen, fenitrothion and permethrin on the fly pupal parasitoids, Spalangia endius and Nasonia vitripennis

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  • SHONO Yoshinori
    Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • ARAKAWA Ryo
    Laboratory of Parasitology, Faculty of Medicine, Toyama Medical and Pharmaceutical University
  • HIRANO Masachika
    Takarazuka Research Center, Sumitomo Chemical Co., Ltd.
  • ABE Yasuo
    Takarazuka Research Center, Sumitomo Chemical Co., Ltd.

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Other Title
  • ハエ類の蛹寄生蜂, ハエヤドリコガネコバチおよびキョウソヤドリコバチに対するピリプロキシフェン, フェニトロチオン, ペルメトリンの影響
  • ハエ類の蛹寄生蜂,ハエヤドリコガネコバチおよびキョウソヤドリコバチに対するピリプロキシフェン,フェニトロチオン,ペルメトリンの影響〔英文〕
  • ハエルイ ノ サナギ キセイバチ ハエヤドリコガネコバチ オヨビ キョウソヤドリコ

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The susceptibility to fenitrothion and permethrin of two species of fly pupal parasitoids, Spalangia endius and Nasonia vitripennis, which are important natural enemies of flies, was examined by the direct spray of the emulsifiable concentrate. The susceptibility of N. vitripennis (Toyama strain) to permethrin was 17.5 times and to fenitrothion 4.5 times higher respectively, than that of S. endius (Toyama strain). Small difference of susceptibility to both insecticides was recognized among three strains (Toyama, Miyazaki and USA) of S. endius. The treatment of pyriproxyfen (6.4μg/g medium) to the hosts did not have much influence on the emergence of the two species, and the emerged adults reproduced offspring normally. These results suggest the possibility of combined control by pyriproxyfen and mass releasing of the housefly parasitoids.

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