Kuo Tai-Chih, Lin Chien-Chung, Tsai Ching-Chu, Chen Shiang-Jiuun, Hung Tso-Min, Hsieh Che-Chu, Lu Ja-Yu, Huang Rong-Nan
Department of Biochemistry, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan.
Department of Orthopedic Surgery, Taipei City Hospital, Taipei 100, Taiwan.
Insects. 2021 Mar 2;12(3):211. doi: 10.3390/insects12030211.
Functional mineral water and related products are popular in some Asian countries as health drinks and, recently, have been employed in agricultural crop production as well as pest control. This study aimed to investigate the survival of mosquito vectors exposed to plant-derived functional mineral water produced by terahertz technology. The terahertz-based functional mineral water used in the current study not only decreased the hatching of (Say) larvae but also showed concentration-dependent toxicity to the 3rd instar larvae and pupae of the three mosquito species tested. (Skuse) and pupae were more susceptible to terahertz-based functional mineral water than the larval stage, as indicated by their lower LC. Lower concentrations (<100 ppm) of terahertz-based functional mineral water were not lethal to the pupae; however, these low concentrations still resulted in a reduced adult emergence. Although terahertz-based functional mineral water did not significantly affect (Linnaeus) hatching, it could potentially be used for vector control at the larvae and pupae stages. The larvicidal and pupicidal activity of diluted terahertz-based functional mineral water gradually diminished after 24 h, indicating that it is a biodegradable and eco-friendly bioinsecticide. However, as the terahertz-based functional mineral water is also toxic to larvivorous predatory-copepods, it should not be utilized in aquatic environments where predatory-based mosquito control programs are employed.
功能性矿泉水及相关产品在一些亚洲国家作为健康饮品很受欢迎，最近还被用于农作物生产以及害虫防治。本研究旨在调查暴露于太赫兹技术生产的植物源功能性矿泉水的蚊媒的存活情况。本研究中使用的基于太赫兹的功能性矿泉水不仅降低了尖音库蚊（Say）幼虫的孵化率，而且对所测试的三种蚊种的三龄幼虫和蛹表现出浓度依赖性毒性。致倦库蚊（Skuse）和蛹比幼虫阶段对基于太赫兹的功能性矿泉水更敏感，这体现在它们较低的半数致死浓度（LC）上。较低浓度（<100 ppm）的基于太赫兹的功能性矿泉水对蛹不具有致死性；然而，这些低浓度仍导致成虫羽化减少。尽管基于太赫兹的功能性矿泉水对致倦库蚊（Linnaeus）的孵化没有显著影响，但它可能可用于幼虫和蛹阶段的病媒控制。稀释后的基于太赫兹的功能性矿泉水的杀幼虫和杀蛹活性在24小时后逐渐减弱，表明它是一种可生物降解且环保的生物杀虫剂。然而，由于基于太赫兹的功能性矿泉水对捕食性桡足类幼虫也有毒性，因此不应在采用基于捕食的蚊虫控制计划的水生环境中使用。
