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首页> 外文期刊>Environmental Science & Technology >Effects of Deepwater Horizon Oil on the Movement and Survival of Marsh Periwinkle Snails (Littoraria irrorata)
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Effects of Deepwater Horizon Oil on the Movement and Survival of Marsh Periwinkle Snails (Littoraria irrorata)

机译：深水地平线油对沼泽长春蜗牛（Littoraria irrorata）的运动和存活的影响

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摘要

The Deepwater Horizon (DWH) oil spill resulted in the release of millions of barrels of oil into the Gulf of Mexico, and some marsh shorelines experienced heavy oiling including vegetation laid over under the weight of oil. Periwinkle snails (Littoraria irrorata) are a critical component of these impacted habitats, and population declines following oil spills, including DWH, have been documented. This study determined the effects of oil on marsh periwinkle movement and survivorship following exposure to oil. Snails were placed in chambers containing either unoiled or oiled laid over vegetation to represent a heavily impacted marsh habitat, with unoiled vertical structure at one end. In the first movement assay, snail movement to standing unoiled vegetation was significantly lower in oiled chambers (oil thickness » 1 cm) compared to unoiled chambers, as the majority (~75%) of snails in oiled habitats never reached standing unoiled vegetation after 72 h. In a second movement assay, there was no snail movement standing unoiled structure in chambers with oil thicknesses of 0.1 and 0.5 cm, while 73% of snails moved in unoiled chambers after 4h. A toxicity assay was then conducted by exposing snails to oil coated Spartina stems in chambers for periods up to 72 h, and mortality was monitored for 7 days post exposure. Snail survival decreased with increasing exposure time, and significant mortality (~35%) was observed following an oil exposure of less than 24 h. Here, we have shown that oil impeded snail movement to clean habitat over a short distance and resulted in oil-exposure times that decreased survival. Taken together, along with declines documented by others in field surveys, these results suggest that marsh periwinkle snails may have been adversely affected following exposure to DWH oil.
机译：深水地平线（DWH）漏油导致向墨西哥湾释放了数百万桶石油，并且一些沼泽海岸线经历了严重的加油过程，其中包括被油压覆盖的植被。长春蜗牛（Littoraria irrorata）是这些受影响的栖息地的重要组成部分，并且有文献记录了包括DWH在内的石油泄漏后的人口下降。这项研究确定了油脂对暴露于油脂后对沼泽长春花运动和生存的影响。将蜗牛放在装有未上油或已上油的植被的小室中，代表受严重影响的沼泽栖息地，一端未上油，垂直结构。在第一个运动分析中，与未上油的房间相比，在未上油的房间（油厚»1厘米）中，蜗牛向未站立的未上油植被的运动显着降低，因为在上油的栖息地中，大多数蜗牛（〜75％）在72天后从未达到未站立的未上油植被H。在第二次运动测定中，没有蜗牛运动站立在油厚为0.1和0.5 cm的室内未上油的结构中，而73％的蜗牛在4小时后在未上油的室内运动。然后，通过将蜗牛暴露在隔室中涂有油的Spartina茎上长达72小时的时间进行毒性分析，并在暴露后7天监测死亡率。蜗牛的存活率随着暴露时间的增加而降低，并且暴露在少于24小时的油中后观察到显着的死亡率（〜35％）。在这里，我们已经证明了油脂阻碍蜗牛移动以短距离清洁栖息地，并导致油脂暴露时间缩短了生存时间。综上所述，再加上其他人在田间调查中发现的下降趋势，这些结果表明，沼泽地长春蜗牛在接触DWH油后可能受到了不利影响。

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  • 来源
    《Environmental Science & Technology》 |2017年第15期|8757-8762|共6页
  • 作者

    T. Ross Garner; Michael A- Hart; Lauren E. Sweet; Hanna T. J. Bagheri; Jeff Morris; James A. Stoeckel; Aaron P. Roberts;

  • 作者单位

    University of North Texas, Department of Biological Sciences & Advanced Environmental Research Institute, Denton, Texas 76203, United States;

    Auburn University, School of Fisheries, Aquaculture and Aquatic Sciences, Auburn, Alabama 36849, United States;

    University of North Texas, Department of Biological Sciences & Advanced Environmental Research Institute, Denton, Texas 76203, United States;

    University of North Texas, Department of Biological Sciences & Advanced Environmental Research Institute, Denton, Texas 76203, United States;

    Abt Associates, Boulder, Colorado 80302, United States;

    Auburn University, School of Fisheries, Aquaculture and Aquatic Sciences, Auburn, Alabama 36849, United States;

    University of North Texas, Department of Biological Sciences & Advanced Environmental Research Institute, Denton, Texas 76203, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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