Efficacy of commercial botanical pure essential oils of garlic (Allium sativum) and anise (Pimpinella anisum) against larvae of the mosquito Aedes aegypti

Abstract

Aedes aegypti, also called the dengue or yellow fever mosquito, is a significant vector species of several viruses especially the dengue virus. Reducing Ae. aegypti population can directly reduce dengue outbreaks in the community. The research aim is to assess the efficacy of commercial botanical pure essential oils of garlic (Allium sativum) and anise (Pimpinella anisum) against Ae. aegypti larvae, the mortality of larvae was monitored after 24-and 48-h of exposure. The larvicidal activity of garlic oil after 24-h exposure was 0.005 ppm for LC 25 , 0.006 ppm for LC 50 , and 0.012 ppm for LC 90 , and after 48 h exposure was 0.004 ppm for LC 25 , 0.006 ppm for LC 50 , and 0.014 ppm for LC 90. Meanwhile, the larvicidal activity of anise oil after 24-h exposure was 0.016 ppm for LC 25 , 0.023 ppm for LC 50, and 0.043 ppm for LC 90 , and after 48-h exposure was 0.014 ppm for LC 25 , 0.020 ppm for LC 50 , and 0.037 ppm for LC 90 , whereas, Aedes larval mortalities increased with an increase in the concentration of garlic and anise essential oils after both 24-and 48-h exposure. The results of this study were clear evidence for the efficiency of commercial plant oil for dengue vector larval control, especially garlic essential oils.

Using the Essential Oils of Sage and Anise to Enhance the Shelf Life of the Williams (sin. Bartlett) Pear

“…This versatile oil is commonly utilized in diffusers and massage oils, reflecting a contemporary understanding of its therapeutic benefits and its integration into holistic wellness practices. AEO can also be used as a natural means of fighting insect vectors [25].…”

Behavioral disruption of two orchard hemipteran pests by garlic essential oil

“…EOs, especially from garlic ( Allium sativum L., Amaryllidaceae), on insect physiology and behavior have been studied extensively. Whether sprayed on the plants, fumigated, or topically applied to insects, garlic EOs display insecticidal properties against several orders including Blattodea, Isoptera, Lepidoptera, Coleoptera, Diptera, and Hemiptera that can affect all developmental stages (Regnault‐Roger & Hamraoui, 1995; Hori, 1996; Alghamdi, 2018; Bedini et al, 2020; Sedthapong et al, 2020). These lethal properties may be based on various mechanisms, impacting insect physiology and biochemistry, such as interruption of digestion via decreased activity of digestive enzymes (Shahriari & Sahebzadeh, 2017), inhibition of protein synthesis, and modification of energy metabolism as reported for Myzus persicae (Sulzer) or Sitotroga cerealella Olivier (Wu et al, 2020).…”