College of Plant Protection, Nanjing Agricultural University, Nanjing, P.R. China.
Shanghai Key Laboratory of Protected Horticultural Technology, Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, P.R. China.
Pest Manag Sci. 2021 Jun;77(6):2964-2970. doi: 10.1002/ps.6335. Epub 2021 Mar 15.
Two-spotted spider mite (TSSM), Tetranychus urticae Koch, is one of the most serious pests of agricultural crops. Broflanilide exhibits high lethality against various pests and has been marketed worldwide under the Vedira and Tenebenal brands in 2020. Nevertheless, little information has been reported about its effects on agricultural mites.
Broflanilide displayed higher toxicity to TSSM eggs (24 h LC , 1.015 mg L ) and adult females (24 h LC , 2.062 mg L ) than commercial acaricides, including cyflumetofen, bifenazate, and profenofos. In contrast, the adverse effects of broflanilide on the predatory mite, Typhlodromips swirskii Athias-Henriot, was lower than those of fenpyroximate and abamectin. In the sublethal effect study, while adult females were treated with broflanilide, the number of eggs and longevity were reduced in LC and LC treatments; when eggs were treated with broflanilide, the egg duration and deutonymph duration were prolonged in LC treatment. A significant decrease in the total life span and duration and fecundity of adult females was observed in LC and LC treatments. Furthermore, the number of eggs per adult female was significantly reduced from 103.48 ± 3.69 in the control group to 69.42 ± 2.22 and 48.33 ± 1.75 in LC and LC treatments, respectively. In the greenhouse bioassay, broflanilide 5% suspension concentrate (MCI-8007) showed excellent acaricidal activity to TSSM, with 99.22% corrected control, compared with the MCI-8007 untreated group.
Our results indicated that broflanilide has a high acaricidal activity to TSSM and significant inhibition to fecundity of adult female, and could be considered as a potential alternative for TSSM management. © 2021 Society of Chemical Industry.
二斑叶螨（TSSM），Tetranychus urticae Koch，是农业作物中最严重的害虫之一。溴氟虫酰胺对各种害虫具有很高的致死率，并于 2020 年以 Vedira 和 Tenebenal 品牌在全球市场销售。然而，关于其对农业螨类的影响，报道甚少。
溴氟虫酰胺对 TSSM 卵（24 h LC₅₀，1.015 mg/L）和雌成螨（24 h LC₅₀，2.062 mg/L）的毒性均高于商业杀螨剂，如氟吡唑醚菌酯、唑螨酯和丙溴磷。相比之下，溴氟虫酰胺对捕食螨，Typhlodromips swirskii Athias-Henriot 的不良影响低于甲氰菊酯和阿维菌素。在亚致死效应研究中，当雌成螨用溴氟虫酰胺处理时，LC 和 LC 处理的产卵数和寿命减少；当卵用溴氟虫酰胺处理时，LC 处理的卵期和若螨期延长。LC 和 LC 处理时，雌成螨的总寿命、寿命和产卵数显著减少。此外，LC 和 LC 处理时，每只雌螨的产卵数从对照组的 103.48±3.69 显著减少到 69.42±2.22 和 48.33±1.75。在温室生物测定中，溴氟虫酰胺 5%悬浮剂（MCI-8007）对 TSSM 具有优异的杀螨活性，校正防效为 99.22%，与未用 MCI-8007 处理的组相比。
我们的结果表明，溴氟虫酰胺对 TSSM 具有高杀螨活性和对雌成螨生殖力的显著抑制作用，可考虑作为 TSSM 管理的一种潜在替代药剂。 © 2021 英国化学学会。
