School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA,
Bull Environ Contam Toxicol. 2014 Apr;92(4):375-80. doi: 10.1007/s00128-014-1216-7. Epub 2014 Feb 5.
In order to simulate an offshore oil spill event, we assessed the acute toxicity of the non-dispersed and the chemically dispersed water-accommodated fraction (WAF) of crude oil using Louisiana sweet crude and Corexit(®) 9500A with juvenile Harris mud crabs (Rhithropanopeus harrisii), an important Gulf of Mexico benthic crustacean. The chemical dispersion of crude oil significantly increased acute toxicity of the WAF in juvenile mud crabs compared to naturally dispersed oil. The majority of the mortality in the chemically dispersed treatments occurred within 24 h. While higher concentrations of chemically dispersed WAF had no survivors, at lower concentrations surviving juvenile crabs displayed no long-term effects. These results suggest that if the juvenile crabs survive initial exposure, acute exposure to dispersed or non-dispersed crude oil may not induce long-term effects.
为了模拟海上溢油事件，我们使用路易斯安那甜原油和科瑞希特（®）9500A 评估了未分散和化学分散的水容纳馏分（WAF）对幼年哈里斯泥蟹（Rhithropanopeus harrisii）的急性毒性，哈里斯泥蟹是墨西哥湾重要的底栖甲壳类动物。与自然分散的石油相比，石油的化学分散显著增加了 WAF 对幼年泥蟹的急性毒性。化学分散处理中的大多数死亡发生在 24 小时内。虽然较高浓度的化学分散 WAF 没有幸存者，但在较低浓度下幸存的幼年蟹没有显示出长期影响。这些结果表明，如果幼年蟹能够在初始暴露中存活，那么急性暴露于分散或未分散的原油可能不会产生长期影响。
