Exposure of juvenile Danio rerio to aged TiO2 nanomaterial from sunscreen

Autor: Manuela Fouqueray, Jérôme Labille, Patrice Noury, Lysiane Dherret, Jeanne Garric, Jérôme Rose, Khedidja Abbaci, Perrine Chaurand
Přispěvatelé: Milieux aquatiques, écologie et pollutions (UR MALY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)
Rok vydání: 2012
Předmět:
Zdroj: Environmental Science and Pollution Research
Environmental Science and Pollution Research, Springer Verlag, 2013, 20 (5), pp.3340-3350. ⟨10.1007/s11356-012-1256-7⟩
Environmental Science and Pollution Research, 2013, 20 (5), pp.3340-3350. ⟨10.1007/s11356-012-1256-7⟩
ISSN: 1614-7499
0944-1344
DOI: 10.1007/s11356-012-1256-7
Popis: [Departement_IRSTEA]Eaux [TR1_IRSTEA]BELCA; International audience; The toxicity of dietary exposure to artificially aged TiO2 nanomaterial (T-Lite (TM)) used in sunscreen cream was studied on Danio rerio. Embryolarval assays were conducted to assess the effects of TiO2 residues of nanomaterial (RNM) on fish early life stages. Juvenile fishes were exposed by the trophic route in two experiments. During the first experiment, juvenile fishes were exposed to TiO2 RNM for 14 days by adding RNM to commercial fish food. The second one consisted in producing a trophic food chain. Pseudokirchneriella subcapitata algae, previously contaminated with TiO2 RNM in growth medium, was used to feed Daphnia magna neonates over a 48-h period. Daphnia were used next to feed juvenile fishes for 7 days. Accumulation of Ti, life traits (survival and growth) and biochemical parameters such as energy reserves, digestive (trypsin, esterase, cellulose and amylase) and antioxidant (superoxide dismutase and catalase) enzyme activity were measured at the end of exposures. As expected in the receiving aquatic system, TiO2 RNM at low concentrations caused a low impact on juvenile zebrafish. A slight impact on the early life stage of zebrafish with premature hatching was observed, and this effect appeared mainly indirect, due to possible embryo hypoxia. When juvenile fish are exposed to contaminated food, digestive enzyme activity indicated a negative effect of TiO2 RNM. Digestive physiology was altered after 14 days of exposure and seemed to be an indirect target of TiO2 RNM when provided by food.
Databáze: OpenAIRE
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