Exposure of pink salmon embryos to dissolved polynuclear aromatic hydrocarbons delays development, prolonging vulnerability to mechanical damage
Exposure of pink salmon embryos to dissolved polynuclear aromatic hydrocarbons delays development, prolonging vulnerability to mechanical damage
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DOI：
10.1016/j.marenvres.2009.12.006
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发表时间：
2010-06-01
影响因子：
3.3
通讯作者：
Thedinga, John F.
中科院分区：
文献类型：
--
作者：
Carls, Mark G.;Thedinga, John F.
暴露于原油中溶解的多环芳烃（PAH）会延迟粉红鲑鱼（Oncorhynchus gorbuscha）胚胎发育，从而延长其对机械损伤（休克）的敏感性。暴露也会导致死亡、水肿和贫血，这与先前的研究一致。孵化和蛋黄消耗延迟，表明胚胎发育的速度因PAH暴露而减慢。最终结果是，暴露的胚胎比正常的胚胎更容易受到休克，未暴露的胚胎对休克的敏感性延长了4-6天，持续一个多月，胚胎暴露于指数下降，溶解的PAH浓度在水中通过含油岩石，初始总PAH浓度为22.4 μ g/L，几何平均浓度为4.5 μ g/L在最初的20天里，暴露于溶解在石油中的多环芳烃引起的对休克的易感性可能潜在地增加含油河流系统中报告的死亡率，例如埃克森巴尔德斯石油泄漏后威廉王子湾的死亡率，如果观察者不能区分直接死亡率和休克引起的死亡率
Exposure to dissolved polynuclear aromatic hydrocarbons (PAHs) from crude oil delays pink salmon (Oncorhynchus gorbuscha) embryo development, thus prolonging their susceptibility to mechanical damage (shock) Exposure also caused mortality, edema, and anemia consistent with previous studies Hatching and yolk consumption were delayed, indicating the rate of embryonic development was slowed by PAH exposure. The net result was that exposed embryos were more susceptible to shock than normal, unexposed embryos Susceptibility to shock was protracted by 4-6 d for more than a month in embryos exposed to exponentially declining, dissolved PAH concentrations in water passed through oiled rock, the initial total PAH concentration was 22.4 mu g L(-1) and the geometric mean concentration was 4 5 mu g L(-1) over the first 20 d Protracted susceptibility to shock caused by exposure to PAHs dissolved from oil could potentially increase the reported incidence of mortality in oiled stream systems, such as those in Prince William Sound after the Exxon Valdez oil spill, if observers fail to discriminate between direct mortality and shock-induced mortality Published by Elsevier Ltd