Selection and genetic analysis of fenvalerate resistance in Amblyseius pseudolongispinosus (Acari: Phytoseiidae)
1996
Zhu, Keyan | Ke, Lisheng | Xin, Jieliu
A fenvalerate-resistant strain of Amblyseius pseudolongispinosus Xin, Liang & Ke was selected and evaluated for level of resistance. After 18 selection cycles, the LC₅₀ value was 65 times higher than in wild-type strain. Resistance was partially lost if the selection pressure was removed. Genetic studies indicated that the resistance factor was controlled by a single, incompletely dominant gene. The resistant strain, which had the same intrinsic rate of increase as the wild-type strain, might be a useful biological control agent of spider mites in an IPM system.
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