Repellent and Toxic Effects of some Plant Extracts on Subterranean Termite Psammotermes hybostoma (Isoptera: Rhinotermitidae)

Q2 Agricultural and Biological Sciences

International Journal of Agriculture and Biology Pub Date : 2022-03-01 DOI:10.17957/ijab/15.1905

Khalid A. Asiry

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Abstract

The current study was conducted to evaluate the toxicity and repellent effects of ethanolic extracts of Lantana camara, Moringa oleifera, Rhazya stricta and Ruta chalepensis on subterranean termite, Psammotermes hybostoma. All the tested extracts demonstrated noticeable toxicities, however, L. camara and R. stricta showed relatively more toxic effects, at 24 h and 48 h with LC50s of 177.5, 131.5 mg.kg-1 and 199.8, 140.3 mg.kg-1, respectively. Toxic effect was observed to be dependent on dose as well as exposure-time. No significant differences were observed between L. camara, R. sricta and positive control fipronil 2.5EC. Moreover, L. camara and R. stricta extracts, at 500 mg.kg-1, showed potential repellent effects on P. hybostoma (Desneux) with repellency of 88.3 and 81.67%, respectively. Our work highlights the importance of screening the plant-based products for anti-termites’ activity. We suggest that tested plants could possibly provide an alternative means for termite control strategies in protecting the economically important crops. © 2022 Friends Science Publishers

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几种植物提取物对地下白蚁(等翅目:鼻白蚁科)的驱避和毒性作用

本试验研究了大戟叶、辣木、刺叶和沙勒坡叶四种植物乙醇提取物对地下白蚁的毒性和驱避作用。所有提取物均表现出明显的毒性作用，但在24 h和48 h的lc50分别为177.5、131.5 mg时，山梨花和花楸的毒性作用相对较强。Kg-1和199.8,140.3 mg。公斤,分别。观察到毒性作用依赖于剂量和暴露时间。与阳性对照氟虫腈2.5EC相比，camara、strict R.感染率无显著差异。此外，在500 mg的浓度下，山梨花和芦笋提取物。kg-1对大腹蝇有潜在的驱避作用，驱避率分别为88.3和81.67%。我们的工作强调了筛选植物基产品的抗白蚁活性的重要性。我们认为，试验植物可能为保护重要经济作物的白蚁防治策略提供替代手段。©2022朋友科学出版社

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