Insecticidal, Repellency, and Histopathological Effects of Four Extracts of Clove Oil (Syzygium aromaticum) Against Culex pipiens (Diptera: Culicidae) | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 7, Volume 25, Issue 6, November and December 2021, Pages 79-96 PDF (567.77 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2021.210806 | ||
| Author | ||
| El Gohary E. El Gohary et al. | ||
| Abstract | ||
| Solvent extraction, a classic method to separate different components, was used in this study. Clove (Syzygium aromaticum) was macerated using four solvents, namely, water, petroleum ether, ethyl acetate, and ethanol, to extract the essential oil. The insecticidal and repellent activities on third-instar larvae and adult females of Culex pipiens were investigated. Based on LC50, water extract was more active (LC50 = 39 ppm) against larvae. The highest efficacy of the repellent solvent of the clove extract against adult females was 28%. The ultrastructural effect was studied on the cuticle, muscles, and midgut of third-instar larvae. The tested larvicide showed histopathological changes in the treated larvae compared with the untreated ones. Thus, the water extract could be a good candidate and promising alternative in control programs of mosquitoes, especially against Cx. pipiens in Egypt and other developing countries. | ||
| Keywords | ||
| Culex pipiens; histopathology; larvicidal; repellent; Syzygium aromaticum | ||
|
Statistics Article View: 571 PDF Download: 915 |
||
