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Title: Chitosan-fabricated Ag nanoparticles and larvivorous fishes: a novel route to control the coastal malaria vector Anopheles sundaicus?
Authors: Kadarkarai Murugan
Jaganathan Anitha
Udaiyan Suresh
Rajapandian Rajaganesh
Chellasamy Panneerselvam
Al Thabiani Aziz
Li-Chun Tseng
Kandasamy Kalimuthu
Mohamad Saleh Alsalhi
Sandhanasamy Devanesan
Marcello Nicoletti
Giovanni Benelli
Santosh Kumar Sarkar
Jiang-Shiou Hwang
Contributors: 國立臺灣海洋大學:生命科學暨生物科技學系
Keywords: Anopheline
Biocontrol agent
Indoor residual spraying
Mosquito borne diseases
Date: 2017-08
Issue Date: 2018-10-22T03:24:14Z
Publisher: Hydrobiologia
Abstract: Abstract: Mosquitoes represent a key threat for millions of humans worldwide, since they act as vectors for malaria, dengue fever, yellow fever, Zika virus, filariasis, and encephalitis. In this study, we tested chitosan-synthesized silver nanoparticles (Ch–AgNP) using male crab shells as a source of chitosan, which acted as a reducing and capping agent. Ch–AgNP were characterized by UV–Vis spectroscopy, FTIR, SEM, EDX, and XRD. Chitosan and Ch–AgNP were tested against larvae and pupae of the malaria vector Anopheles sundaicus under laboratory and field conditions. Antibacterial properties of Ch–AgNP were tested on Bacillus subtilis, Escherichia coli, Klebsiella pneumoniae, and Proteus vulgaris using the agar disk diffusion assay. The standard predation efficiency of the mosquito natural enemy Carassius auratus in laboratory conditions was 60.80 (on larva II) and 19.68 individuals (on larva III) per day, while post-treatment with sub-lethal doses of Ch–AgNP, the predation efficiency was boosted to 72.00 (on larva II) and 25.80 individuals (on larva III). Overall, Ch–AgNP fabricated using chitosan extracted from the male crab shells of the hydrothermal vent species Xenograpsus testudinatus may offer a novel and safer control strategy against A. sundaicus mosquito vectors, as well as against Gram-negative and Gram-positive pathogenic bacteria.
Relation: 797(1) pp.335-350
Appears in Collections:[Department of Bioscience and Biotechnology ] Periodical Articles

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