Insecticidal Efficacy of Microbial-Mediated Synthesized Copper Nano-Pesticide against Insect Pests and Non-Target Organisms

Perumal Vivekanandhan, Kannan Swathy, Adelina Thomas, Eliningaya J. Kweka, Afroja Rahman, Sarayut Pittarate and Patcharin Krutmuang
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Perumal Vivekanandhan: Society for Research and Initiatives for Sustainable Technologies and Institutions, Grambharti, Amarapur, Gandhinagar 382650, Gujarat, India
Kannan Swathy: Society for Research and Initiatives for Sustainable Technologies and Institutions, Grambharti, Amarapur, Gandhinagar 382650, Gujarat, India
Adelina Thomas: School of Pharmacy, Catholic University of Health and Allied Sciences, Mwanza P.O. Box 1464, Tanzania
Eliningaya J. Kweka: Division of Livestock and Human Diseases Vector Control, Tropical Pesticides Research Institute, Arusha P.O. Box 3024, Tanzania
Afroja Rahman: Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
Sarayut Pittarate: Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
Patcharin Krutmuang: Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand

IJERPH, 2021, vol. 18, issue 19, 1-16

Abstract: Currently, medical and stored grain pests are major concerns of public health and economies worldwide. The synthetic pesticides cause several side effects to human and non-target organisms. Copper nanoparticles (CuNPs) were synthesized from an aqueous extract of Metarhizium robertsii and screened for insecticidal activity against Anopheles stephensi , Aedes aegypti , Culex quinquefasciatus , Tenebrio molitor and other non-target organisms such as Artemia salina , Artemia nauplii, Eudrilus eugeniae and Eudrilus andrei . The synthesized copper nano-particles were characterized using, UV-vis spectrophotometer, Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Energy Dispersive X-Ray analysis (EDaX), High Resolution Scanning Electron Microscope (HR-SEM) and Atomic Force Microscope (AFM) analysis. Insects were exposed to 25 ?g/mL concentration produced significant mortality against larvae of A . stephensi , A . aegypti , C . quinquefasciatus and T . molitor . The lower toxicity was observed on non-target organisms. Results showed that, M . robertsii mediated synthesized CuNPs is highly toxic to targeted pests while they had lower toxicity were observed on non-target organisms.

Keywords: Metarhizium robertsii; CuNPs; Artemia salina; Eudrilus eugeniae; Eudrilus andrei; Artemia nauplii; Tenebrio molitor; Mosquitoes (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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