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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 II: behavior
Autores:  Vignet, Caroline
Le Menach, Karyn
Lyphout, Laura
Guionnet, Tiphaine
Frere, Laura
Leguay, Didier
Budzinski, Helene
Cousin, Xavier
Begout, Marie-laure
Data:  2014-12
Ano:  2014
Palavras-chave:  Danio rerio
Polycyclic aromatic hydrocarbon
Heavy oil
Light crude oil
Anxiety-like behavior
Photomotor responses
Novel tank
Resumo:  In the last 10 years, behavior assessment has been developed as an indicator of neurotoxicity and an integrated indicator of physiological disruption. Polycyclic aromatic hydrocarbon (PAH) release into the environment has increased in recent decades resulting in high concentrations of these compounds in the sediment of contaminated areas. We evaluated the behavioral consequences of long-term chronic exposure to PAHs, by exposing zebrafish to diets spiked with three PAH fractions at environmentally relevant concentrations. Fish were exposed to these chemicals from their first meal (5 days postfertilization) until they became reproducing adults (at 6 months old). The fractions used were representative of PAHs of pyrolytic (PY) origin and of two oils differing in composition (a heavy fuel oil (HO) and a light crude oil (LO)). Several tests were carried out to evaluate circadian spontaneous swimming activity, responses to a challenge (photomotor response), exploratory tendencies, and anxiety levels. We found that dietary PAH exposure was associated with greater mobility, lower levels of exploratory activity, and higher levels of anxiety, particularly in fish exposed to the HO fraction and, to a lesser extent, the LO fraction. Finally, our results indicate that PAH mixtures of different compositions, representative of situations encountered in the wild, can induce behavioral disruptions resulting in poorer fish performance.
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. 13818-13832
Direitos:  Springer-Verlag Berlin Heidelberg 2014


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