Ticks are of great economic importance to humans and animals due to their role in disease transmission. The application of synthetic, chemical acaricides on the animal and/or the environment (the most used tick control method globally) has led to the selection of tick populations that are resistant. Their adverse effects on ecology and human and animal health cannot be overemphasised. As a result, the search for alternatives that are natural and can overcome these adverse effects are strongly indicated. Using gas chromatography-mass spectrometry (GC–MS) and adult immersion test (AIT), this study evaluated the chemical composition and acaricidal activity, respectively, of Eucalyptus globulus essential oil (EO) on Rhipicephalus (Boophilus) annulatus ticks. This is a major tick species implicated for the transmission of bovine piroplasmosis in Nigeria. The acaricidal activity was evaluated using different concentrations (0.625, 1.25, 2.5, 5 and 10%) of E. globulus EO. Amitraz (1 and 2%) and cypermethrin (2%) served as the positive control and 2% dimethylsulfoxide in distilled water was the negative control. Three replicates of 10 engorged female ticks each were immersed in the test samples for 2 min and the experiment was done twice. The GC–MS analysis identified the major constituents of E. globulus EO as eucalyptol (1,8-cineole) (78%), menthol (20%) and menthone (3%). Eucalyptus globulus EO caused 97% acaricidal mortality at 10% concentration. The lower concentrations reduced tick fecundity up to 90% in a dose-dependent manner. This study provides support for plant EOs as alternative tick control strategy for humans and animals.

由于cks虫在疾病传播中的作用，它们对人类和动物具有重要的经济意义。合成化学杀螨剂在动物和/或环境上的应用（全球最常用的壁虱控制方法）导致人们选择了具有抗性的壁虱种群。它们对生态，人类和动物健康的不利影响不可过分强调。结果，强烈地表明寻求天然的并且可以克服这些不利影响的替代方案。使用气相色谱-质谱法（GC-MS）和成人浸入试验（AIT），本研究分别评估了球桉桉精油（EO）对蛇脑（Boophilus）的化学成分和杀螨活性。环tick。这是尼日利亚主要牛壁虱病传播的主要tick种。使用不同浓度（0.625％，1.25％，2.5％，5％和10％）的E. globulus EO评估杀螨活性。Amitraz（分别为1％和2％）和氯氰菊酯（2％）为阳性对照，蒸馏水中的2％二甲基亚砜为阴性对照。将10个饱腹的雌性tick的三个重复样本浸入测试样品中2分钟，然后进行两次实验。GC-MS分析确定了小球藻EO的主要成分为桉树油（1,8-桉树脑）（78％），薄荷醇（20％）和薄荷酮（3％）。桉树EO在10％的浓度下可导致97％的杀螨死亡率。较低的浓度以剂量依赖性方式将reduced的繁殖力降低多达90％。这项研究为植物EOs作为人类和动物的替代tick控制策略提供了支持。