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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37848

Title: Cymbopogon citratus-synthesized gold nanoparticles boost the predation efficiency of copepod Mesocyclops aspericornis against malaria and dengue mosquitoes
Authors: Kadarkarai Murugan;Jiang-Shiou Hwang;Udaiyan Suresh;Pari Madhiyazhagan
Contributors: 國立台灣海洋大學:海洋生物研究所
Keywords: Aedes aegypti;Anopheles stephensi;Biological control;Copepods;Lemongrass;Nanotechnology;Mesocyclops aspericornis
Date: 2015-06
Issue Date: 2016-05-16T06:27:04Z
Publisher: Experimental Parasitology
Abstract: Abstract:Plant-borne compounds can be employed to synthesize mosquitocidal nanoparticles that are effective at low doses. However, how they affect the activity of mosquito predators in the aquatic environment is unknown. In this study, we synthesized gold nanoparticles (AuN) using the leaf extract of Cymbopogon citratus, which acted as a reducing and capping agent. AuN were characterized by a variety of biophysical methods and sorted for size in order to confirm structural integrity. C. citratus extract and biosynthesized AuN were tested against larvae and pupae of the malaria vector Anopheles stephensi and the dengue vector Aedes aegypti. LC50 of C. citratus extract ranged from 219.32 ppm to 471.36 ppm. LC50 of AuN ranged from 18.80 ppm to 41.52 ppm. In laboratory, the predatory efficiency of the cyclopoid crustacean Mesocyclops aspericornis against A. stephensi larvae was 26.8% (larva I) and 17% (larva II), while against A. aegypti was56% (I) and 35.1% (II). Predation against late-instar larvae was minimal. In AuN-contaminated environment,predation efficiency against A. stephensi was 45.6% (I) and 26.7% (II), while against A. aegypti was 77.3% (I) and 51.6% (II). Overall, low doses of AuN may help to boost the control of Anopheles and Aedes larval populations in copepod-based control programs.
Relation: 153,pp.129-138
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37848
Appears in Collections:[海洋生物研究所] 期刊論文

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