Department of Agricultural Biotechnology, Entomology Program, Seoul National University, Seoul, Republic of Korea.
Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea.
PLoS One. 2021 Jan 7;16(1):e0245165. doi: 10.1371/journal.pone.0245165. eCollection 2021.
The zoophytophagous mirid Nesidiocoris tenuis (Hemiptera: Miridae) is one of the biological control agents against the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), a major pest of greenhouse crops. The successful establishment of a biological control agent and its co-occurrence with the target pests increases the efficacy of biological control programs in greenhouses. In this study, we explored the effects of different wavelengths of LED light on establishment of N. tenuis in laboratory condition, with the goal of enhancing the biological control of B. tabaci in greenhouse crops. Nesidiocoris tenuis was most strongly attracted by LED light at a wavelength of 385 nm. This same wavelength was also highly attractive to B. tabaci in Y-tube experiments with lights of specific wavelengths provided is each arm of the apparatus. In trials in growth chambers, we verified the attraction of N. tenuis to 385 nm wavelength. When LED light at a wavelength of 385 nm was used in a growth chamber for 6 hours out of 24 hours, it significantly increased the remaining number of N. tenuis in growth chamber and level of predation compared to treatment with white LED light or without LED light. In conclusion, UV-LED light at a wavelength of 385 nm attracts both B. tabaci and N. tenuis. Thus, it would be used for enhancing early establishment of this mirid bug, better spatial congruence of both mirid bug and whitefly, and better control of the whitefly.
植食性盲蝽 Nesidiocoris tenuis（半翅目：盲蝽科）是防治温室作物主要害虫烟粉虱 Bemisia tabaci（半翅目：粉虱科）的生物防治剂之一。生物防治剂的成功建立及其与目标害虫的共存增加了温室中生物防治计划的效果。在这项研究中，我们探讨了不同波长的 LED 光对 N. tenuis 在实验室条件下建立的影响，目的是增强温室作物中对 B. tabaci 的生物防治。N. tenuis 对 385nm 的 LED 光的吸引力最强。在每个装置臂提供特定波长的光的 Y 型管实验中，这种相同的波长对 B. tabaci 也具有很强的吸引力。在生长室试验中，我们验证了 N. tenuis 对 385nm 波长的吸引力。当使用波长为 385nm 的 LED 光在生长室中 24 小时内照射 6 小时时，与使用白色 LED 光或不使用 LED 光相比，它显著增加了生长室内剩余的 N. tenuis 数量和捕食水平。总之，波长为 385nm 的 UV-LED 光吸引了 B. tabaci 和 N. tenuis。因此，它将用于增强这种盲蝽的早期建立，更好地协调盲蝽和粉虱的空间一致性，并更好地控制粉虱。
