Selection and genetic analysis of fenvalerate resistance in Amblyseius pseudolongispinosus (Acari: Phytoseiidae)

Keyan Zhu; Lisheng Ke; Jieliu Xin

doi:10.11158/saa.1.1.2

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Keyan Zhu,^1,2 Lisheng Ke,¹ Jieliu Xin^1,3

¹Department of Environmental and Resources Biology, Fudan University, Shanghai 200433, China
²Current address: Department of Entomology, Purdue University, West Lafayette, IN 47907, USA
³Deceased

Abstract

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.

Citation Download Citation

Keyan Zhu, Lisheng Ke, and Jieliu Xin "Selection and genetic analysis of fenvalerate resistance in Amblyseius pseudolongispinosus (Acari: Phytoseiidae)," Systematic and Applied Acarology 1(1), 5-10, (12 June 1996). https://doi.org/10.11158/saa.1.1.2

Accepted: 1 June 1996; Published: 12 June 1996

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