Ioannou Charalampos S, Hadjichristodoulou Christos, Mouchtouri Varvara A, Papadopoulos Nikos T
Laboratory of Hygiene & Epidemiology, Faculty of Medicine, School of Health Science, University of Thessaly, 41222 Larissa, Greece.
Laboratory of Entomology & Agricultural Zoology, Department of Agriculture Crop. Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece.
Insects. 2021 Sep 13;12(9):822. doi: 10.3390/insects12090822.
is an invasive mosquito species responsible for local transmission of chikungunya and dengue viruses in Europe. In the absence of available treatments, insecticides-based control remains one of the most important viable strategies to prevent emerging problems. Diflubenzuron (DFB) and var. () are among the most commonly used larvicides for . control with consequent concerns for the potential development of resistance. Studies on the resistance emergence in . and its persistence in the wild to both DFB and are essential for the efficient and sustainable planning of the control programmes. In this context, larvae from a recently laboratory established population were subjected to increasing selective pressure for nine successive generations using both DFB and . The resistance levels and the overwintering success of the selected populations relative to control (colonies that received no selection) were determined. Results revealed an 8.5- and 1.6-fold increase on the resistance levels following selection with DFB and respectively. The selection process to both larvicides had no apparent impacts on the overwintering capability relative to control, suggesting the successful persistence of the selected individuals in the wild on an annual base.
是一种入侵性蚊子物种，在欧洲负责基孔肯雅病毒和登革热病毒的本地传播。在缺乏有效治疗方法的情况下，基于杀虫剂的控制仍然是预防新出现问题的最重要可行策略之一。除虫脲（DFB）和变种（）是用于控制的最常用杀幼虫剂之一。由于担心抗药性的潜在发展，对其进行控制。研究抗药性在中的出现及其在野外对DFB和的持续存在对于控制计划的有效和可持续规划至关重要。在此背景下，使用DFB和对最近在实验室建立的种群的幼虫连续九代施加不断增加的选择压力。确定了所选种群相对于对照（未接受选择的群体）的抗性水平和越冬成功率。结果显示，分别用DFB和选择后，抗性水平分别提高了8.5倍和1.6倍。相对于对照，两种杀幼虫剂的选择过程对越冬能力没有明显影响，这表明所选个体在野外每年都能成功存活。
