Using essential oils from Citrus paradisi as a fumigant for Solenopsis invicta workers and evaluating the oils’ effect on worker behavior
Using essential oils from Citrus paradisi as a fumigant for Solenopsis invicta workers and evaluating the oils’ effect on worker behavior
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DOI：
10.1007/s11356-021-14910-6
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发表时间：
2021-06
影响因子：
5.8
通讯作者：
Ning Zhang;Yihong Liao;L. Xie;Zhi-xiang Zhang;Wei Hu
中科院分区：
文献类型：
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作者：
Ning Zhang;Yihong Liao;L. Xie;Zhi-xiang Zhang;Wei Hu
红火蚁是世界上最具破坏性的入侵物种之一，对人类、野生动物、农作物和牲畜产生不利影响。为了控制虫害，化学杀虫剂在世界各地广泛使用。然而，它们的广泛使用对环境和人类健康产生了负面影响。精油是安全和生态友好的，可以作为化学农药的替代品。本研究以葡萄柚精油为熏蒸剂防治红火蚁。粗葡萄柚油（GO 1）含有28种化合物，而浓缩葡萄柚油（GO2），这是从GO 1通过真空蒸馏精制，含有20种化合物。GO 1和GO2的主要成分为D-柠檬烯（70.1%）和β-蒎烯、α-蒎烯、β-水芹烯、辛醛、d-香芹酮、α-松油醇和芳樟醇。挥发油及其单体成分（α-蒎烯、α-松油醇、β-水芹烯、辛醛和d-香芹酮）均表现出强烈的致死熏蒸作用。工人对GO2的敏感性高于GO 1，辛醛对工人的毒性高于其他四种组分。两种精油或五种成分处理工蜂触角后，工蜂的行走和抓握能力均受到明显抑制，触角感受器出现明显的弯曲或断裂现象。葡萄柚精油及其主要化合物的熏蒸活性与其对工人的行走和抓握行为的影响有关，这证实葡萄柚精油是一种有前途的，生态友好的，安全的熏蒸剂用于控制红火蚁。
The red imported fire ant is one of the world’s most devastating invasive species, adversely affecting humans, wildlife, crops, and livestock. To control infestations, chemical pesticides are deployed extensively around the world. However, their extensive use has led to negative effects on the environment and human health. Essential oils, which are safe and ecofriendly, can potentially be used as alternatives to chemical pesticides. In this study, grapefruit essential oils were used as fumigant agents to control red imported fire ants. The crude grapefruit oil (GO1) contained 28 compounds, and the concentrated grapefruit oil (GO2), which was refined from GO1 by vacuum distillation, contained 20 compounds. D-Limonene was the dominant constituent in both GO1 (70.1%) and GO2 (73.96%), and other important constituents included β-pinene, α-pinene, β-phellandrene, octanal, d-carvone, α-terpineol, and linalool. Both the essential oils and their individual constituents (α-pinene, α-terpineol, β-phellandrene, octanal, and d-carvone) showed strong lethal fumigant effects against workers. Workers were more susceptible to GO2 than GO1, and octanal was more toxic to workers as compared with the other four constituents. When antennas of workers were treated with the two oils or the five constituents, their walking and gripping abilities were significantly suppressed, and there was an obvious bending or breaking phenomenon on the sensilla of the antennas. Fumigant activity by grapefruit essential oils and their main compounds were associated with their effects on the walking and gripping behavior of workers, and this confirmed that grapefruit essential oil is a promising, ecofriendly, and safe fumigant for the control of red imported fire ants.