Can predatory mites aid in the management of the citrus leprosis mite?

IF 3.5 Q1 AGRONOMY
J. Vechia, Daniel J. Andrade, A. Tassi, Amy Roda, E. van Santen, Daniel Carrillo
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Abstract

The flat mite Brevipalpus yothersi is the main vector of citrus leprosis in South and Central America and Mexico, where vector suppression using conventional acaricides is usually the only disease control method, leading to problems with acaricide resistance. This mite is present in Florida, where several viruses known to cause citrus leprosis were recently detected. This research builds preparedness for managing emerging viral diseases and mitigating potential problems associated with acaricide resistance by addressing the compatibility of chemical and biological control strategies against B. yothersi. The predatory mite Amblyseius largoensis has shown promise as a biological control agent of B. yothersi. However, the effects of acaricides used in citrus on this predator are unknown.This study investigated the impact of different routes of acaricide exposure on A. largoensis, including direct contact, pesticide-contaminated prey, residual contact, and combined exposure routes in laboratory settings. Additionally, the efficacy of A. largoensis in controlling B. yothersi, alone and in combination with acaricide applications, was evaluated under greenhouse conditions.Commonly used acaricides like abamectin and spirodiclofen were highly effective in controlling B. yothersi and only slightly harmful to A. largoensis. Other acaricides were also effective against B. yothersi but were less compatible with the predatory mite. In the greenhouse trial, all acaricides, alone or in combination with the predators, and the predators alone, effectively suppressed B. yothersi one month after treatment application. However, B. yothersi populations significantly increased one month later in the abamectin-alone and predator-alone treatments. At the same time, the combination of abamectin and predators provided B. yothersi suppression throughout the experiment. The fenpyroximate-predator combination also provided better control than each treatment applied independently. All other acaricides provided prolonged B. yothersi control, hindering biological control probably due to the lack of prey for A. largoensis. Research findings highlight the potential for enhancing the selectivity of acaricides towards A. largoensis by manipulating their exposure route. Combining predatory mites with acaricides shows promise in improving B. yothersi management.
捕食螨能帮助管理柑橘白粉病螨吗?
扁螨 Brevipalpus yothersi 是南美洲、中美洲和墨西哥柑橘白粉病的主要病媒,在这些地区,使用传统杀螨剂抑制病媒通常是唯一的病害控制方法,这导致了杀螨剂抗药性问题。这种螨虫出现在佛罗里达州,那里最近发现了几种已知会导致柑橘白皮病的病毒。这项研究通过解决化学和生物防治 B. yothersi 战略的兼容性问题,为管理新出现的病毒性疾病和减轻杀螨剂抗药性带来的潜在问题做好准备。捕食螨 Amblyseius largoensis 已显示出生物防治 B. yothersi 的前景。本研究调查了不同杀螨剂接触途径对 A. largoensis 的影响,包括直接接触、被杀虫剂污染的猎物、残留接触以及实验室环境中的综合接触途径。阿维菌素和螺螨酯等常用杀螨剂对控制洋二翅金龟子非常有效,而只对洋二翅金龟子有轻微伤害。其他杀螨剂对 B. yothersi 也有效,但与捕食螨的相容性较差。在温室试验中,所有杀螨剂单独使用或与捕食螨结合使用,以及单独使用捕食螨,都能在施药一个月后有效抑制 B. yothersi。但是,在单独使用阿维菌素和单独使用捕食者的处理中,一个月后,B. yothersi 的数量明显增加。与此同时,阿维菌素和捕食者的组合在整个实验过程中都能抑制 B. yothersi。唑螨酯-捕食者组合的防治效果也比单独使用每种处理更好。所有其他杀螨剂都能延长对 B. yothersi 的控制时间,这可能是由于缺乏 A. largoensis 的猎物,从而阻碍了生物防治。研究结果突出表明,通过控制杀螨剂的接触途径,有可能提高杀螨剂对幼虫的选择性。将捕食性螨虫与杀螨剂结合使用有望改善对 B. yothersi 的管理。
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
Frontiers in Agronomy
Frontiers in Agronomy Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
4.80
自引率
0.00%
发文量
123
审稿时长
13 weeks
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