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Research Journal of Medicinal Plants
Year: 2018  |  Volume: 12  |  Issue: 2  |  Page No.: 65 - 71

Mosquitocidal Activities of Tagetes erecta L. Compared to Prallethrin Against Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae)

Tri Baskoro Tunggul Satoto, Tridjoko Hadianto, Nika Istiyana, Siti Badriyah and Ajib Diptyanusa    

Abstract: Background and Objective: Mosquito resistance against different varieties of chemical pesticide had been frequently reported. Therefore, a substitute using natural substances is necessary. One substance that has the properties of a natural insecticide is plant-derived Tagetes essential oil (Tagetes erecta L.). Preliminary study to assess the mosquitocidal activity of 100% Tagetes erecta L. essential oil against Aedes aegypti and Culex quinquefasciatus mosquitoes, contrasted with 13.16 g L–1 prallethrin as the gold standard. Materials and Methods: Leaves of Tagetes erecta L. were distilled by using water and steam distillation method to obtain the essential oil. No synthetic compounds were added to the production process to acquire concentration of 100% Tagetes erecta L. essential oil. Mosquitoes were divided into 3 groups: Group A (aquadest), Group B (100% Tagetes oil) and Group C (13.16 g L–1 prallethrin). Trials were conducted using 25 mosquitoes aged 2-5 days introduced into a test chamber and exposed to the substance by using electric liquid vaporizer according to the test group. Test replications were done 3 times. Knockdown time (KT50 and KT90) was observed and mosquito mortality was confirmed after 24 h. Data analysis was performed by using Probit analysis (95% CI). Results: In 100% Tagetes erecta L. essential oil treatment group, KT50 was 140 min and KT90 was 187 min in Aedes aegypti, whereas in Culex quinquefasciatus, KT50 was 91 min and KT90 was 151 min. In 13.16 g L–1 prallethrin treatment group, KT50 was 64 min and KT90 was 109 min in Aedes aegypti, whereas in Culex quinquefasciatus, KT50 was 83 min and KT90 was 137 min. There were 1 Aedes aegypti and 1 Culex quinquefasciatus mosquitoes found dead in aquadest treatment group after 24 h of observation. Conclusion: Leaves extract of 100% Tagetes erecta L. showed mosquitocidal activity against Aedes aegypti and Culex quinquefasciatus mosquitoes, yet it was not superior compared to 13.16 g L–1 prallethrin.

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