Datura metel-synthesized silver nanoparticles magnify predation of dragonfly nymphs against the malaria vector Anopheles stephensi

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Title:	Datura metel-synthesized silver nanoparticles magnify predation of dragonfly nymphs against the malaria vector Anopheles stephensi
Authors:	樋口亞紺;Murugan, Kadarkarai;Dinesh, Devakumar;Kumar, Prabhu Jenil;Panneerselvam, Chellasamy;Subramaniam, Jayapal;Madhiyazhagan, Pari;Suresh, Udaiyan;Nicoletti, Marcello;Alarfaj, Abdullah A.;Munusamy, Murugan A.;Higuchi, Akon;Mehlhorn, Heinz;Benelli, Giovanni
Contributors:	工學院化學工程與材料工程學系
Keywords:	Animals;Anopheles;Anopheles - drug effects;Anopheles - physiology;Biomedical and Life Sciences;Biomedicine;Datura metel - chemistry;Datura metel - metabolism;Dragonflies;Health aspects;Humans;Immunology;Insect Vectors - drug effects;Insect Vectors - physiology;Insecticides - pharmacology;Larva - drug effects;Larva - physiology;Malaria - transmission;Medical Microbiology;Microbiology;Nanoparticles;Nanoparticles - chemistry;Nanoparticles - metabolism;Nymph - drug effects;Nymph - growth & development;Odonata - physiology;Original Paper;Plant Extracts - chemistry;Plant Extracts - metabolism;Plant Leaves - chemistry;Plant Leaves - metabolism;Predation (Biology);Pupa - drug effects;Pupa - growth & development;Silver;Silver - metabolism;Silver - pharmacology
Date:	2015-12-01
Issue Date:	2026-04-21 14:42:54 (UTC+8)
Publisher:	Springer Verlag;Berlin/Heidelberg: Springer Berlin Heidelberg
Abstract:	摘要： Malaria is a life-threatening disease caused by parasites transmitted to people and animals through the bites of infected mosquitoes. The employ of synthetic insecticides to control Anopheles populations leads to high operational costs, non-target effects, and induced resistance. Recently, plant-borne compounds have been proposed for efficient and rapid extracellular synthesis of mosquitocidal nanoparticles. However, their impact against predators of mosquito larvae has been poorly studied. In this study, we synthesized silver nanoparticles (AgNPs) using the Datura metel leaf extract as reducing and stabilizing agent. The biosynthesis of AgNPs was confirmed analyzing the excitation of surface plasmon resonance using ultraviolet–visible (UV–vis) spectroscopy. Scanning electron microscopy (SEM) showed the clustered and irregular shapes of AgNPs, with a mean size of 40–60 nm. The presence of silver was determined by energy-dispersive X-ray (EDX) spectroscopy. Fourier transform infrared (FTIR) spectroscopy analysis investigated the identity of secondary metabolites, which may be acting as AgNP capping agents. In laboratory, LC 50 of D. metel extract against Anopheles stephensi ranged from 34.693 ppm (I instar larvae) to 81.500 ppm (pupae). LC 50 of AgNP ranged from 2.969 ppm (I instar larvae) to 6.755 ppm (pupae). Under standard laboratory conditions, the predation efficiency of Anax immaculifrons nymphs after 24 h was 75.5 % (II instar larvae) and 53.5 % (III instar larvae). In AgNP-contaminated environment, predation rates were boosted to 95.5 and 78 %, respectively. Our results documented that D. metel -synthesized AgNP might be employed at rather low doses to reduce larval populations of malaria vectors, without detrimental effects on behavioral traits of young instars of the dragonfly Anax immaculifrons . 其他題名： Parasitol Res 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2015-12-01 出處： Parasitology research (1987), 2015-12, Vol.114 (12), p.4645-4654 版權： Springer-Verlag Berlin Heidelberg 2015 版權： COPYRIGHT 2015 Springer 識別號： ISSN: 0932-0113 識別號： EISSN: 1432-1955 識別號： DOI: 10.1007/s00436-015-4710-x 識別號： PMID: 26337272
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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