Department of Plant Protection, Shanxi Agricultural University, Taigu, China.
Shanxi Key Laboratory of Integrated Pest Management in Agriculture, Institute of Plant Protection, Shanxi Academy of Agricultural Science, Taiyuan, China.
Pest Manag Sci. 2020 Sep;76(9):3225-3235. doi: 10.1002/ps.5878. Epub 2020 May 19.
Grapholita molesta (Busck) is a fruit pest worldwide. While sex pheromones-based technology for male attraction has made great progress in the monitoring or mass trapping of G. molesta, the attraction of males alone is not an effective reproductive control strategy. The integration of sex pheromones with female attractants, which have been reported to attract adult females and males, is therefore necessary. To determine a suitable dual-sex attractant for trapping G. molesta, combinations of four attractants [sex pheromones (ph), host-plant volatiles (pp), sugar-acetic acid-ethanol-water solutions (ss), and food lures (fl)] were screened using electroantennograms, wind tunnel experiments, and field trial tests. Various mediums and antioxidants were then added to the selected attractants combination (AC) and examined in the field.
The responses of G. molesta to attractants differed significantly between the sexes. Increases in male activation behavior and trapping were motivated by ph, while pp and particularly ss increased adult antennae perception. In response to fl alone or together with ph, more male or female individuals were trapped. This indicates that ph, as a sex lure, and fl, as a host lure, may complete male and female attraction. Consequently, this combination is suggested. In the field trials, the additions of 10 μL of honey and 35% (184.3 μg) of 2,6-di-tert-butyl-4-methylphenol [BTH] (preservatives) to the AC (ph + fl) resulted in moth captures equal to that of a commercial sex pheromones lure.
A dual-sex attractant composed of ph, fl, honey, and BTH is recommended for trapping G. molesta in the field. © 2020 Society of Chemical Industry.
Grapholita molesta（Busck）是一种世界性的水果害虫。虽然基于性信息素的雄性吸引技术在监测或大量诱捕 G. molesta 方面取得了巨大进展，但仅吸引雄性并不是一种有效的生殖控制策略。因此，有必要将性信息素与已报道能吸引成虫雌性和雄性的雌性引诱剂结合起来。为了确定一种适合诱捕 G. molesta 的双性引诱剂，我们使用触角电位图、风洞实验和田间试验筛选了四种引诱剂[性信息素（ph）、寄主植物挥发物（pp）、糖-乙酸-乙醇-水溶液（ss）和食物引诱剂（fl）]的组合。然后，在选定的引诱剂组合（AC）中添加各种介质和抗氧化剂，并在田间进行了检验。
G. molesta 对引诱剂的反应在性别之间有显著差异。ph 增加了雄虫的激活行为和诱捕量，而 pp 特别是 ss 增加了成虫触角的感知。单独使用 fl 或与 ph 一起使用，诱捕到的雄性或雌性个体更多。这表明 ph 作为一种性引诱剂和 fl 作为一种寄主引诱剂可能完成了对雄性和雌性的吸引。因此，建议使用这种组合。在田间试验中，向 AC（ph+fl）中添加 10 μL 的蜂蜜和 35%（184.3 μg）的 2,6-二叔丁基-4-甲基苯酚[BTH]（防腐剂），结果与使用商业性信息素诱捕剂捕获的飞蛾数量相等。
建议在田间使用由 ph、fl、蜂蜜和 BTH 组成的双性引诱剂来诱捕 G. molesta。© 2020 化学工业协会。
