Inheritance of Resistance to Diamide Insecticides, Flubendiamide, and Chlorantraniliprole in the Smaller Tea Tortrix, Adoxophyes honmai（Lepidoptera: Tortricidae）

Abstract

We investigated the inheritance of resistance to diamide insecticides, flubendiamide, and chlorantraniliprole in the smaller tea tortrix, Adoxophyes honmai Yasuda, using resistant（R）and susceptible（S）strains obtained from Shizuoka Prefecture, Japan. Lethal concentration 50（LC₅₀）values for flubendiamide in the R and S strains were 129 and 3.26 ppm, respectively. LC₅₀ values for chlorantraniliprole in the R and S strains were 48.2 and 1.33 ppm, respectively. The results of crossing experiments showed that resistance to the two diamides was an autosomal incompletely dominant trait controlled by polygenic factors.