Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 21, Issue 24, Pages 13877-13887Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-014-2585-5
Keywords
Danio rerio; Polycyclic aromatic hydrocarbon; Lifecycle; Anxiety-like behavior; Offspring
Categories
Funding
- ANR project ConPhyPoP [CES 09_002]
- CPER A2E
- European Union
- European Regional Development Fund
- Region Poitou-Charentes
- l'Institut Francais de Recherche pour l'Exploitation de la Mer
- LabEx COTE cluster of excellence Continental to coastal ecosystems
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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 mu g 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 embryos exposed to sediment spiked with PAHs displayed lethargic and/or anxiety-like behaviors. This latter behavior was also identified in offspring at larval stage. All together, these effects could have detrimental consequences on fish performances and contribution to recruitment.
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