Identification and Field Evaluation of Sex Pheromone Components and Its Antagonist Produced by a Major Tea Pest, Archips strojny (Lepidoptera: Tortricidae)

文献类型： 外文期刊

第一作者： Fu, Nanxia

作者： Fu, Nanxia;Magsi, Fida Hussain;Zhao, Yingjie;Cai, Xiaoming;Li, Zhaoqun;Bian, Lei;Xiu, Chunli;Chen, Zongmao;Luo, Zongxiu;Fu, Nanxia;Magsi, Fida Hussain;Zhao, Yingjie;Cai, Xiaoming;Li, Zhaoqun;Bian, Lei;Xiu, Chunli;Chen, Zongmao;Luo, Zongxiu

作者机构：

关键词： female sex pheromone; Archips strojny; (Z)-11-tetradecenyl acetate; male attraction; tea pest

期刊名称：INSECTS （ 影响因子：3.139； 五年影响因子：3.285 ）

ISSN：

年卷期： 2022 年 13 卷 11 期

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收录情况： SCI

摘要： Simple Summary The tea tortrix Archips strojny is a major pest of spring tea in China. Using sex pheromone-based mass trapping or mating disruption techniques to control this pest can minimize excessive pesticide usage, thereby maintaining pesticide residues within the safety standard for spring tea products. However, the sex pheromone components of this species remain elusive. In this study, we identified these components: laboratory assays showed that two bioactive compounds in female sex pheromone gland extracts, namely, (Z)-11-tetradecenyl acetate (Z11-14:Ac) and (Z)-11-tetradecenyl alcohol (Z11-14:OH), could elicit male moth antennal responses. A field trapping assay demonstrated that Z11-14:Ac was the attractant in the sex pheromone, while Z11-14:OH seemed to be an antagonist. Overall, our results indicated that lures baited with 1 mg of Z11-14:Ac could be used as a monitoring or mass trapping tool for A. strojny management in Chinese tea plantations. Furthermore, Z11-14:Ac was found to be a common attractant in the sex pheromones of nine leafroller species in the genus Archips. Thus, Z11-14:Ac may be used to develop a mating disruption technique targeting multiple leafroller species. Pesticide application is the only known control method for the tea tortrix Archips strojny (Lepidoptera: Tortricidae), which is a major pest of spring tea in China. To develop sex pheromone-based, environmentally safe control strategies, here we identified the sex pheromone components of this species. The male moths' antennae responded electrophysiologically to two compounds in female pheromone gland extracts. Gas chromatography-mass spectrometry analysis indicated that the two bioactive compounds were (Z)-11-tetradecenyl acetate (Z11-14:Ac) and (Z)-11-tetradecenyl alcohol (Z11-14:OH). Field trapping assays showed that lures baited with only the major component Z11-14:Ac were the most attractive to male moths, and the attractiveness decreased significantly when the lure was impregnated with increased relative ratios of the minor component Z11-14:OH. Our study demonstrated that Z11-14:Ac was the major attractant in the A. strojny sex pheromone, and the minor component Z11-14:OH seemed to serve as an antagonist. The results indicate that lures baited with 1 mg of Z11-14:Ac could be used as a monitoring or mass trapping tool for A. strojny management in Chinese tea plantations. Furthermore, Z11-14:Ac was identified as a common sex pheromone attractant of nine Archips species; these results lay the foundation for developing mating disruption techniques that target multiple leafroller pests.

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