Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China.
Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River (Ministry of Education), Academy of Agricultural Sciences, Southwest University, Chongqing, China.
Pest Manag Sci. 2024 Jul;80(7):3308-3316. doi: 10.1002/ps.8034. Epub 2024 Feb 29.
The citrus red mite, Panonychus citri (McGregor) is a globally distributed agricultural pest. Of late, resistance to common acaricides has raised concerns that chemical control of P. citri is an inefficient means of control. Fluralaner, a highly toxic isoxazoline insecticide used to treat various ectoparasites, presents one potential alternative. However, little information has been reported about the effect of fluralaner on the citrus red mite. This study aims to evaluate the toxicity, sublethal and transgenerational effects of fluralaner on P. citri.
In both laboratory and field populations of P. citri, we found fluralaner to be more toxic than conventional alternatives, including fenpropathrin, bifenazate, azocyclotin and chlorpyrifos. Interestingly, fluralaner proved more toxic to female adults than to the eggs of P. citri, with median lethal concentrations (LC) of 2.446 and 122.7 mg L, respectively. Exposure to sublethal concentrations of fluralaner (LC, LC and LC) significantly reduced the fecundity and longevity of female adults P. citri individuals. Although concentrations of fluralaner applied to the parental female adults (F) led to some changes in the developmental parameters, there were no significant changes in most of the life table parameters or population growth of the F generation.
Our results indicate that fluralaner is highly toxic to P. citri, and a significant sublethal effect on F could suppress the population growth of P. citri, but not for F. Fluralaner may be considered as a pesticide for the future management of the citrus red mite. © 2024 Society of Chemical Industry.
柑橘全爪螨（Panonychus citri（McGregor））是一种分布广泛的农业害虫。最近，对常见杀螨剂的抗性引起了人们的关注，即化学防治柑橘全爪螨不是一种有效的控制方法。氟丙虫酰胺，一种用于治疗各种外寄生虫的高度有毒异噁唑啉类杀虫剂，是一种潜在的替代品。然而，关于氟丙虫酰胺对柑橘全爪螨的影响的信息很少。本研究旨在评估氟丙虫酰胺对柑橘全爪螨的毒性、亚致死和世代间效应。
在实验室和田间种群的柑橘全爪螨中，我们发现氟丙虫酰胺比传统替代品更具毒性，包括甲氰菊酯、唑螨酯、阿维菌素和毒死蜱。有趣的是，氟丙虫酰胺对雌性成虫的毒性大于柑橘全爪螨的卵，其半致死浓度（LC）分别为 2.446 和 122.7 mg/L。暴露于亚致死浓度的氟丙虫酰胺（LC、LC 和 LC）显著降低了雌性成虫柑橘全爪螨个体的繁殖力和寿命。尽管应用于亲代雌性成虫（F）的氟丙虫酰胺浓度导致了一些发育参数的变化，但大多数生命表参数或 F 代种群的生长没有显著变化。
我们的结果表明，氟丙虫酰胺对柑橘全爪螨具有高毒性，对 F 的显著亚致死作用可能会抑制柑橘全爪螨的种群增长，但对 F 则不然。氟丙虫酰胺可被认为是未来柑橘全爪螨管理的一种农药。© 2024 化学工业协会。
