Department of Parasitology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Egypt.
Biochemical and Nutritional Deficiency Diseases Department, Animal Health Research Institute, Benha Branch, Benha, Egypt.
Int J Dermatol. 2018 Apr;57(4):449-457. doi: 10.1111/ijd.13828. Epub 2018 Feb 8.
Myiasis induced by the sheep blowfly, Lucilia sericata, represents a public health problem widely distributed throughout the world. L. sericata larval stages feed on both humans and animals. L. sericata adults and larvae can play a role in spreading agents of mycobacterial infections.
It is critical to establish new and safe alternative methods of controlling L. sericata.
The insecticidal effectiveness and growth inhibition potential of three commercially available essential oils (EOs), vetiver (Chrysopogon zizanioides), cinnamon (Cinnamomum zeylanicum), and lavender (Lavandula angustifolia), as well as their blends, were tested against the second (L2) and third (L3) larval stages of L. sericata. Sunflower (Helianthus annuus) oil was used as a carrier and tested on L2 and L3 larvae. To the best of our knowledge, all applied essential oils, except lavender, and oil blends were tested against L. sericata for the first time.
All applied oils did not repel L2 from the treated liver but adversely affected their development. Contact treatments on L. sericata L3 indicated that vetiver and cinnamon oils significantly affected treated larvae. Total mortality rates were 93.33 and 95.56%, respectively. Furthermore, oil blends tested through contact assays killed larvae when used at higher concentrations; adult emergence was eliminated post-treatment with doses >30% for oil blend 1 and >10% for oil blend 2.
Overall, cinnamon and vetiver oils (5%) were selected as reliable and cheap biopesticides for controlling larvae of L. sericata. The tested oils are inexpensive and represent new promising botanical insecticides in the fight against blowflies causing myiasis.
绵羊狂蝇（Lucilia sericata）引起的蝇蛆病是一种广泛分布于世界各地的公共卫生问题。狂蝇幼虫阶段既以人类为食，也以动物为食。狂蝇成虫和幼虫可在传播分枝杆菌感染因子方面发挥作用。
迫切需要建立控制绵羊狂蝇的新的、安全的替代方法。
测试了三种市售精油（香根草、肉桂和薰衣草精油）及其混合物对绵羊狂蝇第二龄（L2）和第三龄（L3）幼虫的杀虫效果和生长抑制潜力。向日葵油被用作载体，用于测试 L2 和 L3 幼虫。据我们所知，除薰衣草精油和油混合物外，所有应用的精油均首次用于绵羊狂蝇。
所有应用的精油均未驱除处理过的肝脏中的 L2，但对其发育产生了不利影响。对绵羊狂蝇 L3 的接触处理表明，香根草和肉桂油对处理过的幼虫有显著影响。总死亡率分别为 93.33%和 95.56%。此外，通过接触试验测试的油混合物在更高浓度下使用时可杀死幼虫；当剂量超过油混合物 1 的 30%和油混合物 2 的 10%时，处理后成虫就不会出现。
总体而言，肉桂和香根草精油（5%）被选为控制绵羊狂蝇幼虫的可靠且廉价的生物农药。这些测试的精油价格低廉，是对抗引起蝇蛆病的狂蝇的有前途的新型植物性杀虫剂。
