Effects of exposure to petroleum hydrocarbons upon the metabolism of the common sole Solea solea
Effects of exposure to petroleum hydrocarbons upon the metabolism of the common sole Solea solea
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DOI：
10.1016/j.marpolbul.2007.03.004
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发表时间：
2007-07-01
影响因子：
5.8
通讯作者：
Claireaux, Guy
中科院分区：
文献类型：
--
作者：
Davoodi, Fariba;Claireaux, Guy
1999年12月12日，“埃里卡”号油轮在法国南部布列塔尼附近海域沉没，造成20000- 30000吨重油泄漏。在受影响的沿海生境中，有许多比目鱼物种的重要苗圃，特别是普通比目鱼Solea solea。为了调查泄漏对这一经济上重要的资源的潜在影响，我们采用弗莱的代谢活动范围的概念，以评估燃料暴露对少年唯一的功能完整性的有害影响。从未受污染的地区捕获鱼类，并在实验中暴露于模拟Erika泄漏后几周内遇到的污染条件。使用呼吸测量技术，我们测量了对照组和燃料暴露组鞋底的基础代谢率和活动代谢率，并计算了有氧代谢范围。然后，我们比较了控制和燃料暴露的唯一面对一个插曲的氧气供应减少的能力。我们发现，尽管暴露于燃料的鱼类的基础代谢率没有改变，但活性代谢率（-27%）以及有氧代谢范围受到影响。这些代谢范围的变化被认为是鱼类面对环境突发事件能力的变化。最后的唯一的能力，以面对一个插曲，减少氧气的可用性被发现显着改变后，燃料暴露所示的65%的增加，在临界氧水平。结论是燃料暴露的鞋底功能受损，更不能够面对环境的挑战。这些结果之间的联系和最近报道的下降，遭受埃里卡石油泄漏的丰富的一年类进行了讨论。(c)2007爱思唯尔有限公司保留所有权利。
On December 12th, 1999, the oil tanker Erika sank off the southern coast of Brittany (France), releasing 20000-30 000 tons of heavy oil in the open sea. Among the affected coastal habitats were important nurseries for numerous flatfish species and particularly for the common sole, Solea solea. To investigate the potential impact of the spill on this economically significant resource, we employed Fry's concept of metabolic scope for activity to assess the deleterious effect of fuel exposure on the functional integrity of juvenile sole. Fish were captured from uncontaminated areas and experimentally exposed to contamination conditions mimicking those encountered during the weeks that followed the Erika spill. Using respirometry techniques we measured basal and active metabolic rates, and calculated aerobic metabolic scope, in control and fuel-exposed sole. We then compared the ability of control and fuel-exposed sole to face an episode of reduced oxygen availability. We found that whereas basal metabolic rate was not altered in fuel-exposed fish, active metabolic rate (-27%), and therefore aerobic metabolic scope, were impacted. These changes in metabolic scope were viewed as indicating changes in fishes' ability to face environmental contingencies. Finally the ability of sole to face an episode of reduced oxygen availability was found to be significantly altered following fuel exposure as indicated by a 65% increase in the critical oxygen level. It is concluded that fuel-exposed sole are functionally impaired and less able to face environmental challenges. The link between these results and the recently reported fall in the abundance of the year class that suffered the Erika oil spill is discussed. (c) 2007 Elsevier Ltd. All rights reserved.