title: Effects of CeO2Nanoparticles on Terrestrial Isopod Porcellio scaber: Comparison of CeO2Biological Potential with Other Nanoparticles.
abstract: Nano-sized cerium dioxide (CeO2) particles are emerging as an environmental issue due to their extensive use in automobile industries as fuel additives. Limited information is available on the potential toxicity of CeO2nanoparticles (NPs) on terrestrial invertebrates through dietary exposure. In the present study, the toxic effects of CeO2NPs on the model soil organism Porcellio scaber were evaluated. Nanotoxicity was assessed by monitoring the lipid peroxidation (LP) level and feeding rate after 14-days exposure to food amended with nano CeO2. The exposure concentration of 1000 μg of CeO2NPs g-1dry weight food for 14 days significantly increased both the feeding rate and LP. Thus, this exposure dose is considered the lowest observed effect dose. At higher exposure doses of 2000 and 5000 μg of CeO2NPs g-1dry weight food, NPs significantly decreased the feeding rate and increased the LP level. Comparative studies showed that CeO2NPs are more biologically potent than TiO2NPs, ZnO NPs, CuO NPs, CoFe2O4NPs, and Ag NPs based on feeding rate using the same model organism and experimental setup. Based on comparative metal oxide NPs toxicities, the present results contribute to the knowledge related to the ecotoxicological effects of CeO2NPs in terrestrial invertebrates exposed through feeding.
authors.affiliation: University of Nova Gorica, 5000, Nova Gorica, Slovenia.
authors.forename: Olga
authors.initials: O
authors.lastname: Malev
authors.affiliation: University of Nova Gorica, 5000, Nova Gorica, Slovenia.
authors.forename: Polonca
authors.identifier: http://orcid.org/0000-0003-4979-1336
authors.initials: P
authors.lastname: Trebše
authors.affiliation: University of Nova Gorica, 5000, Nova Gorica, Slovenia.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Piecha
authors.affiliation: Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000, Ljubljana, Slovenia. sara.novak@bf.uni-lj.si.
authors.forename: Sara
authors.initials: S
authors.lastname: Novak
authors.affiliation: National Institute of Chemistry, 1001, Ljubljana, Slovenia.
authors.forename: Bojan
authors.initials: B
authors.lastname: Budič
authors.affiliation: Institute of Nuclear Sciences - Vinča, 11000, Beograd, Serbia.
authors.forename: Miroslav D
authors.initials: MD
authors.lastname: Dramićanin
authors.affiliation: Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000, Ljubljana, Slovenia.
authors.forename: Damjana
authors.initials: D
authors.lastname: Drobne
mesh_terms: D000818:Animals; D002563:Cerium / Q000633:toxicity*; D005260:Female; D033321:Isopoda / Q000187:drug effects*; D008297:Male; D053768:Metal Nanoparticles / Q000633:toxicity*; D012989:Soil Pollutants / Q000633:toxicity*
chemical_list: D012989:Soil Pollutants; D002563:Cerium; C030583:ceric oxide