Management of Aedes aegypti using green silver nanoparticles and botanical extracts

Hassan Saeed, Muhammad Muhammad Tariq, Asim Gulzar, Zia-ur-Rehman Mashwani, Muhammad Safian Bajwa


The excessive use of insecticides has led to development of resistance in Aedes aegypti and negative impact on environment and non-target organisms. To overcome these problems, emphasis is being laid for alternatives, therefore, in the present study, the toxicity of eight plant extracts and their green synthesized nanoparticles were evaluated against A. aegypti. Clove extracts caused the maximum mortalities of 92% and 90% of 3rd and 4th instar larvae of A. aegypti followed by ginger causing 90% and 78% mortalities respectively. On the other hand, the minimum mortalities of these larvae were caused by neem and garlic extracts. In case of green silver nanoparticles, the maximum mortalities of 3rd and 4th instar larvae of A. aegypti were caused by clove followed by ginger while the minimum mortalities were caused by nanoparticles of datura followed by garlic. All the green silver nanoparticles caused mortalities of both the instars of the mosquito above 80% with few exceptions. Datura extracts showed the minimum LC50 values after 72 hours of application followed by neem against the 3rd and 4th instar larvae of A. aegypti.  The highest LC50 value was observed in case of ginger followed by clove and eucalyptus. In case of silver nanoparticles, the minimum LC50 values after 72 hours were recorded in case of datura, neem and garlic while the values were the maximum in case of clove and ginger. The LC50 values decreased with the passage of time.


Yellow fever mosquito; Botanical extracts; Green synthesized silver nanoparticles; LC50; Toxicity

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