Resistance levels to propargite in field populations of Brevipalpus yothersi (Acari: Tenuipalpidae) from Brazil's citrus belt

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-05-07 DOI:10.1016/j.cropro.2025.107267

Hector Alonso Escobar-Garcia , Daniel Júnior de Andrade

{"title":"Resistance levels to propargite in field populations of Brevipalpus yothersi (Acari: Tenuipalpidae) from Brazil's citrus belt","authors":"Hector Alonso Escobar-Garcia , Daniel Júnior de Andrade","doi":"10.1016/j.cropro.2025.107267","DOIUrl":null,"url":null,"abstract":"<div><div>Brevipalpus yothersi Baker is a vector of citrus leprosis virus C (CiLV-C), the primary viral disease affecting orchards across the citrus belt of Brazil. Disease management is based mainly on the use of synthetic acaricides to control this mite, with propargite being one of the main acaricides currently in use. The objective of this study was to estimate the levels of resistance to propargite in field populations of B. yothersi. A direct contact bioassay was established on leaf discs of jack bean plants, exposing females to propargite for 48 h. The LC50 and LC95 values were determined for the susceptible laboratory population and for the field populations. In addition, ArcGIS software was used to spatially represent the resistance ratios found. The susceptible laboratory population presented LC50 and LC95 values of 34.97 and 87.70 mg L−1, respectively. Field populations showed LC50 values ranging from 15.35 to 94.54 mg L−1, with resistance ratios in LC50 between 0.44 and 2.70-folds that of the laboratory population, indicating low levels of resistance to propargite. Using ArcGIS, the geographic impact of the resistance status was visualized. Currently, the development of resistance to propargite in B. yothersi is low and can be prevented, allowing continued effective control of the vector. To maintain this situation, it is essential to implement resistance management strategies, such as the rotational use of acaricides with different modes of action, adapted to the characteristics of each region.</div></div>","PeriodicalId":10785,"journal":{"name":"Crop Protection","volume":"196 ","pages":"Article 107267"},"PeriodicalIF":2.5000,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crop Protection","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0261219425001590","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}

引用次数: 0

Abstract

Brevipalpus yothersi Baker is a vector of citrus leprosis virus C (CiLV-C), the primary viral disease affecting orchards across the citrus belt of Brazil. Disease management is based mainly on the use of synthetic acaricides to control this mite, with propargite being one of the main acaricides currently in use. The objective of this study was to estimate the levels of resistance to propargite in field populations of B. yothersi. A direct contact bioassay was established on leaf discs of jack bean plants, exposing females to propargite for 48 h. The LC₅₀ and LC₉₅ values were determined for the susceptible laboratory population and for the field populations. In addition, ArcGIS software was used to spatially represent the resistance ratios found. The susceptible laboratory population presented LC₅₀ and LC₉₅ values of 34.97 and 87.70 mg L⁻¹, respectively. Field populations showed LC₅₀ values ranging from 15.35 to 94.54 mg L⁻¹, with resistance ratios in LC₅₀ between 0.44 and 2.70-folds that of the laboratory population, indicating low levels of resistance to propargite. Using ArcGIS, the geographic impact of the resistance status was visualized. Currently, the development of resistance to propargite in B. yothersi is low and can be prevented, allowing continued effective control of the vector. To maintain this situation, it is essential to implement resistance management strategies, such as the rotational use of acaricides with different modes of action, adapted to the characteristics of each region.

Abstract Image

查看原文本刊更多论文

巴西柑桔带短尾蜱田间种群对丙巴虫的抗性水平

短叶猴（Brevipalpus yothersi Baker）是柑橘麻风病毒C （CiLV-C）的载体，这是影响巴西柑橘带果园的主要病毒性疾病。疾病管理主要基于使用合成杀螨剂来控制该螨，其中丙帕特是目前使用的主要杀螨剂之一。本研究的目的是估计在田间种群对丙帕虫的抗性水平。采用直接接触生物测定法，对青豆植株叶片进行接触48 h，测定了实验室易感群体和田间易感群体的LC50和LC95值。此外，利用ArcGIS软件对所得阻力比进行空间表示。实验室易感人群LC50和LC95值分别为34.97和87.70 mg L−1。野外种群LC50值为15.35 ~ 94.54 mg L−1，抗性比为实验室种群的0.44 ~ 2.70倍，对丙土虫的抗性水平较低。利用ArcGIS软件，对各地区的抗药状况影响进行可视化分析。目前，黄纹伊蚊对丙帕虫产生耐药性的情况很低，可以加以预防，从而继续有效地控制该病媒。为了维持这种情况，必须实施耐药性管理战略，例如根据每个地区的特点轮流使用不同作用方式的杀螨剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.