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Provedor de dados:  ArchiMer
País:  France
Título:  Chronic dietary exposure to pyrolytic and petrogenic mixtures of PAHs causes physiological disruption in zebrafish - part I: Survival and growth
Autores:  Vignet, Caroline
Le Menach, Karyn
Mazurais, David
Lucas, Julie
Perrichon, Prescilla
Le Bihanic, Florane
Devier, Marie-hélène
Lyphout, Laura
Frere, Laura
Begout, Marie-laure
Zambonino-infante, Jose Luis
Budzinski, Helene
Cousin, Xavier
Data:  2014-12
Ano:  2014
Palavras-chave:  Danio rerio
Life cycle
Polycyclic aromatic hydrocarbon
Heavy oil
Light crude oil
Alkylated PAH
Resumo:  The release of polycyclic aromatic hydrocarbons (PAHs) into the environment has increased very substantially over the last decades leading to high concentrations in sediments of contaminated areas. To evaluate the consequences of long-term chronic exposure to PAHs, zebrafish were exposed, from their first meal at 5 days post fertilisation until they became reproducing adults, to diets spiked with three PAH fractions at three environmentally relevant concentrations with the medium concentration being in the range of 4.6–6.7 μg g−1 for total quantified PAHs including the 16 US-EPA indicator PAHs and alkylated derivatives. The fractions used were representative of PAHs of pyrolytic (PY) origin or of two different oils of differing compositions, a heavy fuel (HO) and a light crude oil (LO). Fish growth was inhibited by all PAH fractions and the effects were sex specific: as determined with 9-month-old adults, exposure to the highest PY inhibited growth of females; exposure to the highest HO and LO inhibited growth of males; also, the highest HO dramatically reduced survival. Morphological analysis indicated a disruption of jaw growth in larvae and malformations in adults. Intestinal and pancreatic enzyme activities were abnormal in 2-month-old exposed fish. These effects may contribute to poor growth. Finally, our results indicate that PAH mixtures of different compositions, representative of situations encountered in the wild, can promote lethal and sublethal effects which are likely to be detrimental for fish recruitment.
Tipo:  Text
Idioma:  Inglês

Editor:  Springer Heidelberg
Formato:  application/pdf
Fonte:  Environmental Science And Pollution Research (0944-1344) (Springer Heidelberg), 2014-12 , Vol. 21 , N. 24 , P. 13804-13817
Direitos:  Springer-Verlag Berlin Heidelberg 2014


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