Elucidation of larvicidal potential of metallic and environment friendly food-grade nanostructures against Aedes albopic
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ORIGINAL PAPER
Elucidation of larvicidal potential of metallic and environment friendly food-grade nanostructures against Aedes albopictus Toqeer Ahmed . Irfan Liaqat . Muhammad Zeeshan Hyder . Shaheen Akhtar . Assad Hafeez Bhatti . Shahid Bilal Butt . Zahid Imran . Tayyaba Yasmin . Shabbar Abbas
Received: 30 March 2020 / Accepted: 30 October 2020 Ó Springer Nature B.V. 2020
Abstract To combat health challenges associated with mosquito-borne diseases, the larvicidal activity of metallic nanoparticles, food-grade polymeric nanocapsules and insecticides was investigated against larvae of Aedes albopictus as an effective alternate control approach. The Ae. albopictus was identified using sequencing and phylogenetic analyses of COXI, CYTB and ITS2 genes. The characterization of synthesized nanostructures was performed through Zetasizer, UV–VIS spectroscopy, atomic force microscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. The mosquito larvae T. Ahmed Centre for Climate Research and Development (CCRD), COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan I. Liaqat M. Z. Hyder (&) T. Yasmin S. Abbas Department of Biosciences, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan e-mail: [email protected]; [email protected] S. Akhtar A. H. Bhatti Health Services Academy (HSA), Park Road, Islamabad, Pakistan S. B. Butt Preston Institute of Nano Sciences and Technology (PINSAT), Preston University, Islamabad, Pakistan
were exposed to varying concentration of nanostructures and insecticides, and their percentage mortality was evaluated at different time intervals of 24 h and 48 h exposure. The highest efficacy was observed in zinc oxide nanoparticles (ZnO-NPs) and polymeric nanocapsules FG-Cur E-III (LC50 = 0.24 mg/L, LC90 = 0.6 mg/L) and (LC50 = 3.8 mg/L, LC90 = 9.33 mg/L), respectively, after 24 h; while (LC50 = 0.18 mg/L, LC90 = 0.43 mg/L) and (LC50 = 1.95 mg/L, LC90 = 6.46 mg/L), respectively, after 48 h against fourth instar larvae of Ae. albopictus. Ag, CuO, NiTiO3 and CoTiO3 nanoparticles evaluated in this study also showed promising larvicidal activity. Although ZnO-NPs proved to be effective larvicides, their possible toxicity (producing ROS species) can limit their use. The curcumin nanostructures (FG-Cur E-III) stabilized by food-grade materials are thought to exert their larvicidal activity by binding to sterol carrier protein-2, and depriving the larvae from the essential dietary cholesterol, and bears effective larvicidal potential as safe alternative for chemical larvicides, due to their environment friendly, foodgrade and easy biodegradability. Keywords Larvicidal activity Metallic and food grade nanoparticles Mosquito-borne diseases Water quality
Z. Imran Department of Physics, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
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Environ Geochem Health
Introduction Mosquitoes are one of the major human diseasecausing vectors, especially in the t
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