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Altération de la physiologie des poissons exposés à des hydrocarbures aromatiques polycycliques (HAP). Comportement et reproduction ArchiMer
Vignet, Caroline.
Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants (POPs) which are found in complex mixtures in the environment including aquatic ecosystems. They adsorb on particles, accumulate in sediment and in the first link of the food web. The aim of this study was to measure long term effects of PAH scontamination on a vertebrate model: the zebrafish. In a first study, embryos were exposed on natural sediment spiked with 3 individual PAH (phenanthrene, pyrene and benzo[a]pyrene) during the first four days of their development. In a second study, to evaluate the consequences of long-term chronic exposure to PAHs, zebrafish were exposed, from their first meal (5 days post fertilisation) until they became reproducing adults, to diets spiked...
Tipo: Text Palavras-chave: Danio rerio; Lifecycle; Polycyclic aromatic hydrocarbon; Heavy oil; Light crude oil; Alkylated PAH; Lifecycle; Delayed effect; Anxiety-like behavior; Offspring; Photomotor responses; Maze; Novel tank..
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00195/30598/29052.pdf
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Long-term disruption of growth, reproduction, and behavior after embryonic exposure of zebrafish to PAH-spiked sediment ArchiMer
Vignet, Caroline; Devier, Marie-hélène; Le Menach, Karyn; Lyphout, Laura; Potier, Jeremy; Cachot, Jerome; Budzinski, Helene; Begout, Marie-laure; Cousin, Xavier.
A natural sediment spiked with three individual polycyclic aromatic hydrocarbons (PAHs; pyrene, phenanthrene and benzo[a]pyrene) was used to expose zebrafish embryos and larvae during 4 days. The total PAH concentration was 4.4 μg g−1 which is in the range found in sediment from contaminated areas. Quantification of metabolites in the larvae after exposure confirmed the actual contamination of the larvae and indicated an active metabolism especially for pyrene and benzo[a]pyrene. After a transfer in a clean medium, the larvae were reared to adulthood and evaluated for survival, growth, reproduction, and behavior. Measured endpoints revealed a late disruption of growth (appearing at 5 months) and a trend toward a lower reproductive ability. Adults of...
Tipo: Text Palavras-chave: Danio rerio; Polycyclic aromatic hydrocarbon; Lifecycle; Anxiety-like behavior; Offspring.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29909/28497.pdf
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