Wang Yong, Chang Yajun, Zhang Sai, Jiang Xingchuan, Yang Bin, Wang Guirong
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China.
Insects. 2022 Oct 9;13(10):917. doi: 10.3390/insects13100917.
The fall armyworm, (Lepidoptera: Noctuidae), is an important migratory pest, causing great losses to agricultural production. Light trapping is a pesticide-free method for pest control and is influenced by many factors, especially wavelength and light intensity. In this study, a series of phototactic behavioral assays were carried out and the physical parameters were included to identify phototactic responses of , with as control. It was found that showed the highest average phototactic rate to blue light among five different LED lights. The phototactic rates of the two moths increased gradually with light intensity and were not obviously influenced by sex. In addition, the phototactic rate of was significantly lower under a low light intensity of UV light than that of , further confirmed by the indoor simulation experiment and EC50. According to the obtained parameters, the trapping distance of to blue light was smaller than that of to UV light. Therefore, we summarized a proposal of using blue light for light traps to control , with a maximum distance of no more than 108 m. These results provide an experimental and theoretical basis for improving light-trapping techniques for managing .
草地贪夜蛾（鳞翅目：夜蛾科）是一种重要的迁飞性害虫，给农业生产造成巨大损失。灯光诱捕是一种无农药的害虫防治方法，受多种因素影响，尤其是波长和光强。在本研究中，进行了一系列趋光行为测定，并纳入物理参数以确定草地贪夜蛾的趋光反应，以斜纹夜蛾作为对照。研究发现，在五种不同的LED灯中，草地贪夜蛾对蓝光的平均趋光率最高。两种蛾的趋光率随光强逐渐增加，且不受性别明显影响。此外，在低光强紫外光下，草地贪夜蛾的趋光率显著低于斜纹夜蛾，室内模拟实验和半数致死浓度进一步证实了这一点。根据获得的参数，草地贪夜蛾对蓝光的诱捕距离小于对紫外光的诱捕距离。因此，我们总结了一项使用蓝光诱捕器防治草地贪夜蛾的建议，最大距离不超过108米。这些结果为改进草地贪夜蛾灯光诱捕技术提供了实验和理论依据。
