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ASSESSMENT OF EARLY LIFE STAGE MAHI-MAHI WINDOWS OF SENSITIVITY DURING ACUTE EXPOSURES TO DEEPWATER HORIZON CRUDE OIL

文献类型： 外文期刊

作者： Mager, Edward M. 1 ; Pasparakis, Christina 2 ; Schlenker, Lela S. 2 ; Yao, Zongli 3 ; Bodinier, Charlotte 4 ; Stieg 1 ;

作者机构： 1.Univ North Texas, Dept Biol Sci, Denton, TX 76203 USA

2.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Marine Biol & Ecol, 4600 Rickenbacker Causeway, Miami, FL 33149 USA

3.Chinese Acad Fisheries Sci, East China Sea Fisheries Res Inst, Engn Res Ctr Saline Alkaline Fisheries, Shanghai, Peoples R China

4.Sanofi Adventis, Paris, France

5.ABT Associates Inc, Boulder, CO USA

关键词： Deepwater Horizon;Mahi-mahi;Oil spills;Polycyclic aromatic hydrocarbons (PAHs);Aquatic toxicology

期刊名称：ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY （ 影响因子：3.742； 五年影响因子：3.866 ）

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收录情况： SCI

摘要： Windows of exposure to a weathered Deepwater Horizon oil sample (slick A) were examined for early life stage mahi-mahi (Coryphaena hippurus) to determine whether there are developmental periods of enhanced sensitivity during the course of a standard 96-h bioassay. Survival was assessed at 96 h following oil exposures ranging from 2 h to 96 h and targeting 3 general periods of development, namely the prehatch phase, the period surrounding hatch, and the posthatch phase. In addition, 3 different oil preparations were used: high-and low-energy water accommodated fractions of oil and very thin surface slicks of oil (similar to 1 mu m). The latter 2 were used to distinguish between effects due to direct contact with the slick itself and the water underlying the slick. Considering the data from all 3 exposure regimes, it was determined that the period near or including hatch was likely the most sensitive. Furthermore, toxicity was not enhanced by direct contact with slick oil. These findings are environmentally relevant given that the concentrations of polycyclic aromatic hydrocarbons eliciting mortality from exposures during the sensitive periods of development were below or near concentrations measured during the active spill phase. (C) 2017 SETAC

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