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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Raimondo, Sandy Jackson, Crystal R. Krzykwa, Julie Hemmer, Becky L. Awkerman, Jill A. Barron, Mace G. |
| Description | Author Affiliation: Raimondo S ( US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Drive, Gulf Breeze, FL 32561, USA. Electronic address: Raimondo.sandy@epa.gov.); Jackson CR ( US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Drive, Gulf Breeze, FL 32561, USA.); Krzykwa J ( US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Drive, Gulf Breeze, FL 32561, USA.); Hemmer BL ( US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Drive, Gulf Breeze, FL 32561, USA.); Awkerman JA ( US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Drive, Gulf Breeze, FL 32561, USA.); Barron MG ( US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Drive, Gulf Breeze, FL 32561, USA.) |
| Abstract | Embryonic exposures to the components of petroleum, including polycyclic aromatic hydrocarbons (PAHs), cause a characteristic suite of developmental defects and cardiotoxicity in a variety of fish species. We exposed zebrafish embryos to reference sediment mixed with laboratory weathered South Louisiana crude oil and to sediment collected from an oiled site in Barataria Bay, Louisiana in December 2010. Laboratory oiled sediment exposures caused a reproducible set of developmental malformations in zebrafish embryos including yolk sac and pericardial edema, craniofacial and spinal defects, and tissue degeneration. Dose-response studies with spiked sediment showed that total polycyclic aromatic hydrocarbons (tPAH) concentrations of 27mg tPAH/kg (dry weight normalized to 1 percent organic carbon [1 percent OC]) caused a significant increase in defects, and concentrations above 78mg tPAH/kg 1 percent OC caused nearly complete embryo mortality. No toxicity was observed in Barataria sediment with 2mg tPAH/kg 1 percent OC. Laboratory aging of spiked sediment at 4°C resulted in a nearly 10-fold decrease in sensitivity over a 40-day period. This study demonstrates oiled sediment as an exposure pathway to fish with dose-dependent effects on embryogenesis that are consistent with PAH mechanisms of developmental toxicity. The results have implications for effects on estuarine fish from oiled coastal areas during the Deepwater Horizon spill. |
| File Format | HTM / HTML |
| ISSN | 01476513 |
| Volume Number | 108 |
| e-ISSN | 10902414 |
| Journal | Ecotoxicology and Environmental Safety |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-10-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Sciences Embryonic Development Drug Effects Petroleum Pollution Adverse Effects Petroleum Toxicity Zebrafish Embryology Animals Female Geologic Sediments Chemistry Larva Male Analysis Polycyclic Hydrocarbons, Aromatic Random Allocation Weather Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health |
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