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首页> 外文OA文献 >SENSITIVITY OF FISH EMBRYOS TO WEATHERED CRUDE OIL: PART II. INCREASED MORTALITY OF PINK SALMON (\u3ci\u3eONCORHYNCHUS GORBUSCHA\u3c/i\u3e) EMBRYOS INCUBATING DOWNSTREAM FROM WEATHERED \u3ci\u3eEXXON VALDEZ\u3c/i\u3e CRUDE OIL
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SENSITIVITY OF FISH EMBRYOS TO WEATHERED CRUDE OIL: PART II. INCREASED MORTALITY OF PINK SALMON (\u3ci\u3eONCORHYNCHUS GORBUSCHA\u3c/i\u3e) EMBRYOS INCUBATING DOWNSTREAM FROM WEATHERED \u3ci\u3eEXXON VALDEZ\u3c/i\u3e CRUDE OIL

机译：鱼类胚胎对风化原油的敏感性：第二部分。粉红色三文鱼的死亡率增加（\ u3ci \ u3eONCORHYNCHUs GORBUsCHa \ u3c / i \ u3e）胚胎从天气中开始下游，从而使原油流淌在原油中\ u3c / i \ u3e原油

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We incubated pink salmon embryos under three exposure conditions, direct contact with oil-coated gravel, effluent from oil-coated gravel, and direct contact with gravel coated with very weathered oil (VWO). Embryo mortalities and polynuclear aromatic hydrocarbon (PAH) accumulation in embryo tissues during the direct-contact and effluent exposure experiments were not significantly different, indicating that PAH accumulation was mediated by aqueous transport. Mortality rates for embryos exposed initially to a total PAH concentration (TPAH) of 1.0 ppb were significantly higher than controls when the PAH were derived from VWO. The same aqueous TPAH concentration failed to increase mortality rates when the PAH were derived from less weathered oil, indicating that toxicity of effluents from the VWO was primarily associated with the larger PAH. We conclude that water quality standards for TPAH above 1.0 ppb may fail to protect fish embryos. Further, pink salmon embryos incubating in Prince William Sound after the Exxon Valdez oil spill may have accumulated lethal concentrations of PAH from interstitial water that was contaminated when it percolated through oil reservoirs located upstream from salmon redds.
机译：我们在三种暴露条件下孵育了粉红色鲑鱼胚，它们与涂有油的砾石直接接触，涂有油的砾石中的流出物以及与涂有风化油（VWO）的砾石直接接触。在直接接触和流出物暴露实验期间，胚胎组织中的死亡率和多核芳香烃（PAH）积累均无显着差异，表明PAH积累是由水运输介导的。当PAH衍生自VWO时，最初暴露于1.0 ppb的总PAH浓度（TPAH）的胚胎的死亡率显着高于对照组。当PAH来自风化较少的油时，相同的TPAH水溶液浓度无法提高死亡率，这表明VWO流出物的毒性主要与较大的PAH有关。我们得出的结论是，高于1.0 ppb的TPAH的水质标准可能无法保护鱼胚。此外，埃克森·瓦尔迪兹溢油事件发生后，在威廉王子湾孵化的粉红鲑鱼胚胎可能已经从间隙水中积聚了致命的PAH致死浓度，当它渗透到鲑鱼发红上游的储油池时，被污染了。

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