Larvicidal activities of green silver nanoparticles synthesized using neem seed extract on housefly larvae
Year: 2025
Type: article
Abstract: The house fly is a significant public health insect which needs to be controlled with environmentally friendly strategies. Therefore, Nano-insecticides were de-veloped using biosynthesized silver nanoparticles derived from neem seeds. Bio-synthesized AgNPs neem seed (NS-AgNPs) was tested at four concentrations (25%, 50%, 75% and 100% V/V) with two modes of application (contact and fumigant) against housefly larvae. Synthetic insecticides (dichlorvos) and control were included in the treatments for comparison. The treatments were arranged in a complete randomized design with three replications. The percentage mortality of the test insect was determined with different hours of exposure (2, 4, 6, 8 and 24 hours). The biosynthesized AgNPs (NS-AgNPs) displayed dark brown colour with maximum absorbance obtained at 450 nm. NS-AgNPs exhibited significant larvicidal effects against housefly larvae meanwhile the lowest concentration (25%) had the least larvicidal effect against the studied insect while highest con-centration (100% v/v) resulted in highest significant mortality of the studied housefly larvae. Nano-insecticides applied through contact significantly killed faster than fumigant bioassay. However, the tested nano-insecticide had delayed effect on the studied larvae compared to dichlorvos. Therefore, biosynthesized AgNPs used as nano-insecticides can be incorporated into the housefly manage-ment program.
DOI: 10.4314/nano.v9i1.6
Authors: I. G. Balogun, F. O. Alao, J. A. Elegbede, A. Lateef, T. A. Adebayo, E. B. Gueguim-Kana, L. S. Beukes, N. Matyumaza, O. A. Olaniran
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W7091583157
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