Polycyclic aromatic hydrocarbon exposure in seaside sparrows (Ammodramus maritimus) following the 2010 Deepwater Horizon oil spill
| Autor: | Philip C. Stouffer, Stefan Woltmann, Anna Perez-Umphrey, Sabrina S. Taylor, Christine M. Bergeon Burns |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
animal structures Environmental Engineering Marsh Polycyclic aromatic hydrocarbon 010501 environmental sciences 01 natural sciences biology.animal Environmental Chemistry Animals Petroleum Pollution Polycyclic Aromatic Hydrocarbons Waste Management and Disposal 0105 earth and related environmental sciences chemistry.chemical_classification geography geography.geographical_feature_category Sparrow biology Ecology 010604 marine biology & hydrobiology Sediment Contamination biology.organism_classification Pollution chemistry Salt marsh Environmental science Terrestrial ecosystem Environmental Pollutants Ammodramus Sparrows Environmental Monitoring |
| Zdroj: | The Science of the total environment. 630 |
| ISSN: | 1879-1026 |
| Popis: | The seaside sparrow (Ammodramus maritimus) is an abundant and permanent resident of coastal salt marshes impacted by the 2010 BP Deepwater Horizon oil spill. Such terrestrial species are often overlooked in the aftermath of marine spills, despite the potential for long-term oil exposure. We sampled the livers of seaside sparrows residing in oiled and unoiled sites from 2011 to 2014 and quantified expression of cytochrome p450 1A (CYP1A), a gene involved in the metabolism of polycyclic aromatic hydrocarbons (PAHs). In August 2011, CYP1A expression was markedly higher in birds from an oiled site compared to an unoiled site, but differences had disappeared by June 2012. In June 2013, CYP1A expression was elevated compared to 2012 levels on all sites, including those collected from sites that had not been directly oiled during the spill. This rise in CYP1A expression was possibly due to Hurricane Isaac, which made landfall near our sites between the 2012 and 2013 sampling periods. CYP1A expression was significantly attenuated again in June 2014. We also collected sediment samples from the same marshes for a total concentration analysis of PAHs. The PAH concentrations in sediment samples exhibited a similar pattern to the CYP1A data, supporting the link between marsh PAHs and bird CYP1A expression. These results indicate that contamination from marine oil spills can immediately extend to terrestrial ecosystems, and that storms, weather, or other factors may influence subsequent spatial and temporal oil exposure for several additional years. |
| Databáze: | OpenAIRE |
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