Larvicidal Efficacy of Bio-Extracts for the Control of Anopheles Stephensi (Insecta, Diptera, Culicidae) Mosquitoes
DOI:
https://doi.org/10.31580/n5gs4t75Keywords:
Anopheles stephensi, Bioinsecticides, Integrated Vector Management (IVM), Larvicidal efficacy, Mosquito control, Nicotiana tabacum, Plant extracts, RepellentsAbstract
This study was conducted at NIFA Peshawar in 2024 to compare the larvicidal potential of different Indigenous plant extracts and bioinsecticides against Anopheles stephensi larvae. The tested extracts were Citronella, Neem, Lemon Eucalyptus, Lavender, Geranium, and Nicotiana tabacum. Each extract was treated at 1%, 2%, 3%, 4%, and 5% and the contact periods were 24, 48, and 72 hours. The findings of this study indicated that Nicotiana tabacum had a higher impact and was considered bio-toxic to the second degree causing 100% larval mortality at a 5% concentration level. Neem was next with a 95 percent mortality rate at the same concentration as well as Citronella having a 92 percent efficacy rate. Other extracts namely Fagonia indica and Fumaria indica gave 90 3% and 80% mortality respectively 5%. The statistical analysis also revealed that mortality was highly sensitive to both concentration and the time of exposure.
Based on the findings of this study, Integrated Vector Management (IVM) programs should consider including Nicotiana tabacum. Further, extracts like Citronella, Neem, Lemon Eucalyptus, Lavender, and Geranium exhibited high larvae mortality rates and likely applications as mosquito control repellents.
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