Insecticide susceptibility of the small brown planthopper selected with buprofezin and etofenprox.
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概要
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The changes in insecticide susceptibility of the small brown planthopper (SBPH) selected with etofenprox and buprofezin were studied.<BR>The LD<SUB> 50</SUB> value to etofenprox of SBPH selected with etofenprox was 6.7 times as large as that of the parent colony. The LD<SUB> 50</SUB>values to organophosphates and carbamates of the etofenprox-selected colony did not differ from those of the parent colony.<BR>The LC<SUB> 50</SUB> value to buprofezin of the buprofezin-selected colony was approximately the same as that of the parent colony. The LD<SUB> 50</SUB> values to organophosphates, carbamates and synthetic pyrethroids of the buprofezin-selected colony were almost the same as those of the parent colony.<BR>Aliesterase activities of SBPH did not increase by etofenprox or buprofezin selection.
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