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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ingestion and effects of cerium oxide nanoparticles on Spodoptera frugiperda (Lepidoptera: Noctuidae)

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Author(s):
Castro, Barbara M. M. [1] ; Santos-Rasera, Joyce R. [2] ; Alves, Dejane S. [3] ; Marucci, Rosangela C. [1] ; Carvalho, Geraldo A. [1] ; Carvalho, Hudson W. P. [2]
Total Authors: 6
Affiliation:
[1] Univ Fed Lavras, Dept Entomol, Campus Univ, Caixa Postal 3037, BR-37200900 Lavras, MG - Brazil
[2] Univ Sao Paulo, Ctr Energia Nucl Agr, Av Centenario 303, BR-13416000 Piracicaba, SP - Brazil
[3] Univ Tecnol Fed Parana, Campus Santa Helena, BR-85892000 Santa Helena, Parana - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Environmental Pollution; v. 279, JUN 15 2021.
Web of Science Citations: 0
Abstract

The objective of this study was to evaluate the biological and nutritional characteristics of Spodoptera frugiperda (Lepidoptera: Noctuidae) , an arthropod pest widely distributed in agricultural regions, after exposure to nano-CeO2 via an artificial diet and to investigate the presence of cerium in the body of this insect through X-ray fluorescence mapping. Nano-CeO2 , micro-CeO2 , and Ce(NO3)(3) were incorporated into the diet (0.1, 1, 10, and 100 mg of Ce L-1). Cerium was detected in caterpillars fed with diets con-taining nano-CeO2 (1, 10 and 100 mg of Ce L-1), micro-CeO2 and Ce(NO3)(3) , and in feces of caterpillars from the first generation fed diets with nano-CeO2 at 100 mg of Ce L-1 as well. The results indicate that nano-CeO2 caused negative effects on S. frugiperda. After it was consumed by the caterpillars, the nano-CeO2 reduced up to 4.8% of the pupal weight and 60% of egg viability. Unlike what occurred with micro-CeO2 and Ce(NO3)(3) , nano-CeO2 negatively affected nutritional parameters of this insect, as consumption rate two times higher, increase of up to 80.8% of relative metabolic rate, reduction of up to 42.3% efficiency of conversion of ingested and 47.2% of digested food, and increase of up to 1.7% of metabolic cost and 8.7% of apparent digestibility. Cerium caused 6.8-16.9% pupal weight reduction in second generation specimens, even without the caterpillars having contact with the cerium via artificial diet. The results show the importance of new ecotoxicological studies with nano-CeO2 for S. frugiperda in semi-field and field conditions to confirm the toxicity. (C) 2021 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 15/05942-0 - Shedding light on the metabolism of nanomaterials absorbed by plants with X-ray and vibrational spectroscopy
Grantee:Hudson Wallace Pereira de Carvalho
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 15/19121-8 - Multi-User Equipment approved in grant 2015/05942-0: micro X-Ray Fluorescence system
Grantee:Hudson Wallace Pereira de Carvalho
Support Opportunities: Multi-user Equipment Program