Salem Mohamed Z M, Ali Mona F, Mansour Maisa M A, Ali Hayssam M, Abdel Moneim Esraa M, Abdel-Megeed Ahmed
Forestry and Wood Technology Department, Faculty of Agriculture (EL-Shatby), Alexandria University, Alexandria 21545, Egypt.
Conservation Department, Faculty of Archaeology, Cairo University, Giza 12613, Egypt.
Insects. 2020 Nov 4;11(11):756. doi: 10.3390/insects11110756.
A trend towards environmentally friendly chemicals for use in termite management has been occurring globally. This study examined three naturally occurring plant extracts from (Spike lavender) (Marjorum), and (Clove) against the termite . Plant extract results were compared to two commercially used termite pesticides, the bio-insecticide, (Protecto 9.4% WP) and Dursban (Chlorpyrifos 48%). Gas chromatography-mass spectrometry (GC-MS) analysis was used to identify the main compounds in the three plant extracts. The main compounds in were linalool (21.49%), lavandulol (12.77%), -terpinyl acetate (10.49%), and camphor (9.30%). extract contained thymol (14.64%), -cymene (10.63%), linalool (6.75%), and terpinen-4-ol (6.92%) as main compounds. contained eugenol (99.16%) as the most abundant identified compound. The extract of caused the highest termite death rate, with an LC of 770.67 mg/L. Exposure to lavender extract showed a high death rate with an LC of 1086.39 mg/L. Clove extract did not show significant insecticidal activity with an LC > 2000 mg/L. Significant termiticide effects were found, with LC values of 84.09 and 269.98 mg/L for soldiers and workers under the application of Dursban and Protecto, respectively. The LC values reported for nymphs were <120, <164.5, and 627.87 mg/L after exposure to Dursban, Protecto, and extract, respectively. The results of the study show that some of the extracts have low toxicity compared to the bioagent and Dursban, and may show promise as natural termiticides, particularly as extracts from .
全球范围内，白蚁防治领域正朝着使用环境友好型化学品的趋势发展。本研究检测了三种天然植物提取物——穗花薰衣草、马郁兰和丁香提取物对白蚁的防治效果。将植物提取物的效果与两种商业使用的白蚁杀虫剂进行比较，这两种杀虫剂分别是生物杀虫剂Protecto 9.4% WP和毒死蜱（48% 敌百虫）。采用气相色谱 - 质谱联用（GC-MS）分析法鉴定三种植物提取物中的主要化合物。穗花薰衣草提取物中的主要化合物为芳樟醇（21.49%）、薰衣草醇（12.77%）、乙酸 -γ- 萜品酯（10.49%）和樟脑（9.30%）。马郁兰提取物包含百里香酚（14.64%）、对异丙基甲苯（10.63%）、芳樟醇（6.75%）和萜品烯 -4- 醇（6.92%）作为主要化合物。丁香提取物中含量最丰富的已鉴定化合物为丁香酚（99.16%）。薰衣草提取物导致的白蚁死亡率最高，致死浓度（LC）为770.67 mg/L。接触薰衣草提取物显示出较高的死亡率，LC为1086.39 mg/L。丁香提取物在LC > 2000 mg/L时未表现出显著的杀虫活性。在使用敌百虫和Protecto时，发现对兵蚁和工蚁有显著的杀蚁效果，其LC值分别为84.09和269.98 mg/L。暴露于敌百虫、Protecto和薰衣草提取物后，若虫的LC值分别为<120、<164.5和627.87 mg/L。研究结果表明，与生物制剂和敌百虫相比，一些提取物具有较低的毒性，可能有望作为天然杀蚁剂，特别是薰衣草提取物。
