Attraction of Lygus lineolaris (Hemiptera: Miridae) to a ubiquitous floral volatile in the field.

IF 1.8 3区 农林科学 Q2 ENTOMOLOGY
Matthew C Hetherington, Morgan Weissner, Christelle Guédot
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引用次数: 0

Abstract

Herbivorous insects utilize olfactory and visual cues to orient on suitable host plants, and such cues can be employed to facilitate insect monitoring. Lygus lineolaris Palisot de Beauvois is a polyphagous pest throughout North America. Monitoring this pest as it moves between crop and non-crop hosts remains challenging, and a lack of effective monitoring tools complicates management of this insect. In this study, we examined the electrophysiological and behavioral responses of L. lineolaris to the volatile emissions of 2 crop hosts: alfalfa and strawberry. Gas chromatography with electroantennographic detection was applied to identify antennally active compounds in headspace extracts of flowering host plants, before responses to individual compounds were examined in the field. Five compounds consistently elicited antennal depolarizations in adults of L. lineolaris and, of these, (±)-linalool increased the capture rate of L. lineolaris females in the field. Subsequent experiments examined the influence of visual cues and stereochemistry on capture rate, revealing that lures containing (±)-linalool and (S)-(+)-linalool significantly increased the capture rate of L. lineolaris females compared with traps baited with (R)-(-)-linalool and controls, indicating that L. lineolaris is attracted to (S)-(+)-linalool. While lures increased capture on red traps, this was not the case for white traps, emphasizing the importance of visual cues in the movements and monitoring of L. lineolaris. This study demonstrates that L. lineolaris is attracted to (S)-(+)-linalool in the field, and that attraction depends on trap color. This knowledge is expected to improve monitoring strategies for L. lineolaris in agricultural systems.

线缕盲蝽(半翅目:盲蝽科)对野外普遍存在的一种植物挥发物的吸引。
食草昆虫利用嗅觉和视觉线索来定位合适的寄主植物,这些线索可以用来方便昆虫的监测。波伏瓦盲蝽是一种遍布北美的多食性害虫。监测这种害虫在作物和非作物寄主之间的迁移仍然具有挑战性,而且缺乏有效的监测工具使这种昆虫的管理复杂化。在本研究中,我们研究了L. lineolaris对2种作物寄主:苜蓿和草莓挥发性排放物的电生理和行为反应。气相色谱和天线电图检测应用于鉴定开花寄主植物顶空提取物中的天线活性化合物,然后在田间检查对单个化合物的反应。其中(±)-芳樟醇增加了野外雌线缕草的捕获率。随后的实验考察了视觉线索和立体化学对捕获率的影响,发现含有(±)-芳樟醇和(S)-(+)-芳樟醇的诱饵与(R)-(-)-芳樟醇和对照组相比,(±)-芳樟醇和(S)-(+)-芳樟醇的诱饵显著提高了雌性线卷线线虫的捕获率,表明线卷线线虫被(S)-(+)-芳樟醇吸引。诱捕剂增加了红色陷阱的捕获量,而白色陷阱的情况并非如此,强调了视觉线索在线纹夜蛾运动和监测中的重要性。本研究表明,在田间,linolaris被(S)-(+)-芳樟醇所吸引,这种吸引力取决于陷阱的颜色。这些知识有望改善农业系统中线状乳杆菌的监测策略。
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
Environmental Entomology
Environmental Entomology 生物-昆虫学
CiteScore
3.90
自引率
5.90%
发文量
97
审稿时长
3-8 weeks
期刊介绍: Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment. In addition to research papers, Environmental Entomology publishes Reviews, interpretive articles in a Forum section, and Letters to the Editor.
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