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Journal Article
Green-Synthesized Mosquito Oviposition Attractants and Ovicides: Towards a Nanoparticle-Based “Lure and Kill” Approach?
2017
Overview
Mosquitoes are key vectors of malaria, dengue, yellow fever, chikungunya, West Nile, Japanese encephalitis, lymphatic filariasis, Zika virus and St. Louis encephalitis virus. Eco-friendly control tools of Culicidae vectors are a priority. Green nanotechnologies may help to boost the effectiveness of mosquito vector control. We proposed a facile fabrication of poly-disperse and stable silver nanoparticles (AgNPs) using the
Aganosma cymosa
leaf extract. Nanoparticles were characterized by UV–visible spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction analysis, atomic force microscopy, scanning electron microscopy and transmission electron microscopy. Nanoparticles showed high toxicity on eggs and larvae of
Anopheles stephensi, Aedes aegypti
and
Culex quinquefasciatus
. LC
50
values were 12.45, 13.58 and 14.79 μg/mL, respectively. No egg hatchability was noted post-treatment with 40, 50 and 60 μg/mL, respectively. Nanoparticles were found safer to non-target mosquito predators
Anisops bouvieri, Diplonychus indicus
and
Gambusia affinis
, LC
50
values ranged from 673.36 to 2247.43 µg/mL. Notably, AgNPs showed high oviposition attractiveness towards the three mosquito species. Overall, the oviposition attractiveness of the
A. cymosa
extract coupled with the ovicidal action of AgNPs can help to develop “lure and kill” tools to be used at mosquito breeding sites.
Publisher
Springer US,Springer Nature B.V
Subject
