Bibliographic citations
Rodríguez, K., Zavaleta, L. (2023). Mortalidad larval de Aedes aegypti a diferentes concentraciones de nanopartículas de plata sintetizadas con extracto acuoso de hojas de Eriobotrya japonica “níspero” [Universidad Nacional de Trujillo]. https://hdl.handle.net/20.500.14414/19268
Rodríguez, K., Zavaleta, L. Mortalidad larval de Aedes aegypti a diferentes concentraciones de nanopartículas de plata sintetizadas con extracto acuoso de hojas de Eriobotrya japonica “níspero” []. PE: Universidad Nacional de Trujillo; 2023. https://hdl.handle.net/20.500.14414/19268
@misc{renati/1050935,
title = "Mortalidad larval de Aedes aegypti a diferentes concentraciones de nanopartículas de plata sintetizadas con extracto acuoso de hojas de Eriobotrya japonica “níspero”",
author = "Zavaleta Zavaleta, Luigui Dario",
publisher = "Universidad Nacional de Trujillo",
year = "2023"
}
The Aedes aegypti mosquito is the vector of the Dengue virus, which causes one of the diseases with the greatest impact on the Peruvian population. In the present investigation, the larval mortality of A. aegypti was evaluated at four concentrations of silver nanoparticles (5, 10, 15 and 20 ppm) synthesized with aqueous extract of Eriobotrya japonica "níspero" leaves. The characterization of the nanoparticles was performed by ultraviolet-visible spectroscopy (UV-vis), X-ray diffraction (XRD), Raman spectroscopy and high-resolution transmission electron microscopy (HR TEM), nanoparticles of spherical shape with an average size of 18.71 nm were obtained. Larval mortality was evaluated at 24, 48 and 72 hours after exposure, obtaining the highest percentage at the 5-ppm concentration with 38%. The mean lethal concentration (LC50) was 2,263, 3,009 and 4,058 ppm for 24, 48 and 72 hours of exposure, respectively. The (TL50) was 97,270, 258,058, 2 423,376 and 3 184,944 hours for the concentrations of 5, 10, 15 and 20 ppm respectively. It was concluded that the silver nanoparticles obtained by green synthesis at a concentration of 5 ppm have high larval mortality, generated morphological damage such as arching of the body and the presence of a black coloration in the middle abdominal region, and also caused alterations at the histological level of the midgut, presenting cell destruction and nuclear pyknosis. These AgNPs are a good eco-sustainable alternative for mosquito vector control due to their easy, simple and inexpensive production.
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