The sweet potato whitefly, Bemisia tabaci Gennadius, is an important insect pest of many crops including vegetables through direct feeding damage and as a vector of several plant viruses. Intensive use of insecticides has led to the development of insecticide resistance in global B. tabaci populations. This study was conducted to establish susceptibility levels to deltamethrin, thiamethoxam and pyriproxyfen in seven geographically different populations of B. tabaci MEAM1 adults in Oman. All B. tabaci populations showed very low to low level of resistance (2.1–12.3 fold) to deltamethrin. All B. tabaci populations showed no resistance to very low level of resistance to thiamethoxam (2.2–6.2 fold) and pyriproxyfen (2.4–3.5 fold). A likelihood analysis showed the possibility for control failure in two populations (Barka and Salalah) to deltamethrin, however, no possible failure was detected in all populations for thiamethoxam and pyriproxyfen. An insecticide resistance dynamics study in one population (SQU-1) showed a loss in susceptibility to deltamethrin with increase in the LC₅₀ value from 25.1 mg L⁻¹ to 84.5 mg L⁻¹ between 2017 and 2019 resulting in 5.3 fold increase in RF. The study results determined that several B. tabaci populations are at the initial stages of resistance development to deltamethrin and cross-resistance with thiamethoxam and pyriproxyfen. Vegetable farmers in Oman, the Barka and Salalah regions in particular, should be cautious in the repeated use of one class of insecticide alone.

甘薯粉虱Bemisia tabaci Gennadius是许多农作物的重要害虫，包括通过直接饲喂造成的伤害以及蔬菜，并作为几种植物病毒的媒介。大量使用杀虫剂已导致全球烟粉虱种群对杀虫剂产生抗药性。进行这项研究的目的是确定在阿曼的七个不同地理分布的烟粉虱MEAM1成年人群中对溴氰菊酯，噻虫嗪和吡ip羟芬的敏感性水平。所有烟粉虱种群均表现出对溴氰菊酯的极低至低水平的抗药性（2.1-12.3倍）。所有烟粉虱人群对噻虫嗪（2.2-6.2倍）和吡虫杀酚（2.4-3.5倍）的抗药性极低水平没有抗药性。可能性分析表明，在两个种群（Barka和Salalah）中对溴氰菊酯的控制失败的可能性，但是，在所有种群中，未检测到噻虫嗪和吡吡氧芬的失败。一项针对种群（SQU-1）的杀虫剂抗药性动力学研究显示，2017年至2019年之间，LC ₅₀值从25.1 mg L ^-1增加到84.5 mg L ^-1，导致对溴氰菊酯的敏感性降低，导致RF增加5.3倍。研究结果确定了几种烟粉虱人群正处于对溴氰菊酯的抗药性发展以及与噻虫嗪和吡ip草酚的交叉抗药性的初期。在阿曼，巴尔卡地区和萨拉拉地区的蔬菜种植者，尤其是重复使用一种杀虫剂时应格外谨慎。