Evaluation of the effects of titanium dioxide and aluminum oxide nanoparticles through tarsal contact exposure in the model insect Oncopeltus fasciatus

The Science of the Total Environment
Daniel López-MuñozMª Dolores Garcerá

Abstract

Despite the increasing presence of metal nanoparticles in the biosphere as a consequence of their widespread use, knowledge about the impact of these nanoparticles on fauna, ecosystems and human health is far from completion. This is especially true for terrestrial invertebrates. Insects are environmentally exposed to nanoparticles by several ways, the ectopic contact being one of the most probable. The model insect Oncopeltus fasciatus, has been used in the present work for testing toxicity of nanoparticles present in a surface. Adverse effects of TiO2 nanoparticles and Al2O3 in nanoparticulated or bulk form on mortality, reproductive and embryonic developmental parameters have been analyzed after tarsal contact of adult individuals of O. fasciatus. Effects were monitored in the unexposed filial generation from control and exposed adults. In order to know the effect of the nanoparticles on the insect composition, measurements of protein and lipid content as well as lipid peroxidation were also performed. The results obtained indicate that the ectopic exposure to nanoparticles at 1 mg/cm2 (TiO2) and 0.5 mg/cm2 (Al2O3) did not induce lethal toxicity in O. fasciatus, nor did it modify any of the reproductive parameters. However, ...Continue Reading

Citations

Oct 16, 2019·Current Pharmaceutical Design·Mariano CáceresPablo L Santo-Orihuela
Mar 17, 2021·Environmental Science and Pollution Research International·Benay Tuncsoy, Yagmur Mese
May 19, 2021·Journal, Genetic Engineering & Biotechnology·Moatasem Al-SalihSiti Suri Arshad

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