Susceptibility to cyflumetofen in populations of the citrus leprosis mite, Brevipalpus yothersi, from Brazilian citrus orchards.

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2025-09-28 DOI:10.1002/ps.70262

Hector Alonso Escobar-Garcia,Daniel Júnior de Andrade

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引用次数: 0

Abstract

BACKGROUND Brevipalpus yothersi Baker (Acari: Tenuipalpidae), the citrus leprosis mite, is currently the most economically significant mite pest in commercial citrus orchards, serving as the vector of citrus leprosis virus C (CiLV-C, Cilevirus leprosis). Its control has traditionally relied on the intensive use of synthetic acaricides, raising concerns regarding field efficacy and resistance development. To support integrated pest management (IPM) and resistance management strategies, monitoring the susceptibility of field populations is essential. Cyflumetofen, an acaricide that inhibits mitochondrial complex II electron transport, offers a distinct mode-of-action (MoA) for mite control. This study aimed to characterize the susceptibility of B. yothersi populations to cyflumetofen to evaluate its potential use in sustainable resistance management and prolong its efficacy in commercial applications. RESULTS Field populations exhibited high susceptibility to cyflumetofen, with median lethal concentration (LC50LC₅₀) values ranging from 0.36 to 1.31 mg L-1 and 95% lethality (LC95) values from 1.22 to 4.99 mg L-1. Resistance levels were low, with resistance ratios below 2.79-fold at LC50 and below 3.06-fold at LC95, relative to a susceptible reference population. CONCLUSION Cyflumetofen proved effective against B. yothersi in the surveyed regions, with field populations showing high susceptibility. To maintain its efficacy and extend its commercial longevity, rotation with other synthetic acaricides featuring different MoAs is recommended as part of a resistance management plan. © 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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来自巴西柑橘果园的柑橘麻风螨对氟虫芬的敏感性。

背景：柑桔麻风螨（brevipalpus yothersi Baker）是目前柑桔商业果园中最具经济意义的螨类害虫，是柑桔麻风病毒C （CiLV-C， Cilevirus麻风）的媒介。其控制传统上依赖于大量使用合成杀螨剂，这引起了人们对田间药效和耐药性发展的关注。为了支持害虫综合管理和抗性管理战略，监测田间种群的易感性至关重要。Cyflumetofen是一种抑制线粒体复合体II电子传递的杀螨剂，为螨虫控制提供了一种独特的作用模式（MoA）。本研究的目的是表征黄纹白蝇种群对氟甲醚的敏感性，以评估其在可持续耐药性管理中的潜在用途，并延长其在商业应用中的有效性。结果现场种群对氟甲醚表现出高度敏感性，中位致死浓度（LC50LC₅0）值为0.36至1.31 mg L-1, 95%致死（LC95）值为1.22至4.99 mg L-1。抗性水平较低，相对于敏感参考人群，LC50和LC95的抗性比分别低于2.79倍和3.06倍。结论在调查地区，氟虫啶对白僵虱有一定的防效，现场种群对白僵虱有较高的敏感性。为了保持其功效并延长其商业使用寿命，建议与具有不同moa的其他合成杀螨剂轮作，作为耐药性管理计划的一部分。©2025作者。由John Wiley & Sons Ltd代表化学工业协会出版的《害虫管理科学》。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.