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Egyptian Journal of Aquatic Biology and Fisheries
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E. El Gohary et al., E. (2021). 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, 25(6), 79-96. doi: 10.21608/ejabf.2021.210806
El Gohary E. El Gohary et al.. "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, 25, 6, 2021, 79-96. doi: 10.21608/ejabf.2021.210806
E. El Gohary et al., E. (2021). '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, 25(6), pp. 79-96. doi: 10.21608/ejabf.2021.210806
E. El Gohary et al., E. 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, 2021; 25(6): 79-96. doi: 10.21608/ejabf.2021.210806

Insecticidal, Repellency, and Histopathological Effects of Four Extracts of Clove Oil (Syzygium aromaticum) Against Culex pipiens (Diptera: Culicidae)

Article 7, Volume 25, Issue 6, November and December 2021, Page 79-96  XML PDF (567.77 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2021.210806
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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
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