Identification of VOCs from Lemon Plants Infested and Non-Infested with the Citrus Mealybug and the Attractiveness of Linalyl Acetate for Natural Enemies.

IF 2.1 3区环境科学与生态学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Journal of Chemical Ecology Pub Date : 2026-01-17 DOI:10.1007/s10886-025-01675-2

Saif Khattawi, Murat Muştu

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Abstract

In this study, the volatile compounds found in lemon trees infested and uninfested with Planococcus citri (Risso) (Hemiptera: Pseudococcidae) were investigated. In addition, the interest of the predator Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) and the parasitoid Leptomastix dactylopii (Hymenoptera: Encyrtidae) in lemon trees infested and uninfested with P. citri and some volatile compounds was investigated. According to the results obtained, most of the volatile compounds obtained from mealybug-infested lemon trees showed changes compared to healthy lemon trees. Since volatile compounds play an important role in attracting pests and natural enemies, linalyl acetate was selected as the compound showing the highest amount of changes, and its attractiveness to predators and parasitoids was tested first in the laboratory using a Y-olfactometer and then in a lemon orchard in combination with a yellow sticky trap. In the olfactometer tests, linalyl acetate was found to be attractive to predators and parasitoids. In field studies, the number of predators and parasitoids increased in traps containing linalyl acetate compared to traps containing only paraffin oil. Our results suggest that linalyl acetate may play a role in attracting both predators and parasitoids and can be combined with these natural enemies in biological control studies.

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柑橘粉蚧侵染和未侵染柠檬植株挥发性有机化合物的鉴定及醋酸芳樟酯对天敌的吸引力。

本文对柑橘平球菌（半翅目：假球虫科）侵染和未侵染的柠檬树挥发物进行了研究。此外，还研究了捕食者蒙氏隐蝇（鞘翅目：瓢虫科）和寄生蜂（膜翅目：蜂科）对柑橘蚜及其挥发性物质侵染和未侵染柠檬树的兴趣。结果表明，与健康柠檬树相比，被粉蚧感染的柠檬树的大部分挥发性化合物都发生了变化。由于挥发性化合物在吸引害虫和天敌方面起着重要作用，因此选择乙酸芳樟油作为变化最大的化合物，首先在实验室使用y -嗅觉仪，然后在柠檬园结合黄色粘捕器测试其对捕食者和寄生蜂的吸引力。在嗅觉测试中，发现乙酸芳樟醇对捕食者和寄生蜂有吸引力。在野外研究中，与仅含有石蜡油的陷阱相比，含有乙酸芳樟油的陷阱的捕食者和寄生蜂的数量增加。研究结果表明，乙酸芳樟碱可能同时具有吸引天敌和拟寄生物的作用，并可与天敌和拟寄生物联合防治。

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来源期刊

Journal of Chemical Ecology 环境科学-生化与分子生物学

CiteScore

5.10

自引率

4.30%

发文量

审稿时长

4 months

期刊介绍： Journal of Chemical Ecology is devoted to promoting an ecological understanding of the origin, function, and significance of natural chemicals that mediate interactions within and between organisms. Such relationships, often adaptively important, comprise the oldest of communication systems in terrestrial and aquatic environments. With recent advances in methodology for elucidating structures of the chemical compounds involved, a strong interdisciplinary association has developed between chemists and biologists which should accelerate understanding of these interactions in nature. Scientific contributions, including review articles, are welcome from either members or nonmembers of the International Society of Chemical Ecology. Manuscripts must be in English and may include original research in biological and/or chemical aspects of chemical ecology. They may include substantive observations of interactions in nature, the elucidation of the chemical compounds involved, the mechanisms of their production and reception, and the translation of such basic information into survey and control protocols. Sufficient biological and chemical detail should be given to substantiate conclusions and to permit results to be evaluated and reproduced.