Temporal Variability of Polycyclic Aromatic Hydrocarbons in Deep-Sea Cephalopods of the Northern Gulf of Mexico
| Autor: | Isabel C. Romero, Michael Vecchione, Heather Judkins |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences lcsh:QH1-199.5 exposure to oil contamination Ocean Engineering Aquatic Science lcsh:General. Including nature conservation geographical distribution Oceanography 01 natural sciences Deep sea Abralia oil-residues oil spills lcsh:Science Histioteuthis long-term effects 0105 earth and related environmental sciences Water Science and Technology Global and Planetary Change biology 010604 marine biology & hydrobiology Onychoteuthis banksii biology.organism_classification deepwater horizon spill Deepwater horizon Lipid content Oil spill Period (geology) Environmental science lcsh:Q |
| Zdroj: | Frontiers in Marine Science, Vol 7 (2020) |
| ISSN: | 2296-7745 |
| Popis: | As part of the effort to understand the effects of the Deepwater Horizon Oil Spill (DWHOS), we analyzed tissue from five species of midwater oceanic cephalopods in the northern Gulf of Mexico (GoM) during three time periods, including one period sampled fortuitously just before the spill (2010), and two periods sampled after the spill (2011 and 2015-2016). The species, Japetella diaphana, Abralia redfieldi, Histioteuthis corona, Leachia atlantica, and Onychoteuthis banksii were collected in three geographic areas in the GoM (east, south and southeast of the Macondo wellhead). Results indicate a shift in the composition of polycyclic aromatic hydrocarbons (PAHs) in the tissue of all cephalopods after 2010, with a more petrogenic source in 2011 that weathered and mixed with other sources in 2015-2016. Overall, PAH concentrations, as well as lipid content, were lower in 2011 relative to 2010 and 2015-2016, suggesting secondary effects to oil-residues exposure from the DWHOS. Collectively, PAHs in the tissues of deep-sea cephalopods indicate an episodic exposure to petrogenic PAHs that occurred between 2010 (pre-spill) and 2011, and continued through 2015-2016. |
| Databáze: | OpenAIRE |
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