University of Carthage, Faculty of Sciences of Bizerte, Laboratory of Environmental Analytical Chemistry (05/UR/12-03), 7021 Zarzouna, Bizerte, Tunisia; University of Bordeaux, CNRS, UMR EPOC 5805, avenue des Facultés, 33405 Talence Cedex, France.
University of Bordeaux, CNRS, UMR EPOC 5805, avenue des Facultés, 33405 Talence Cedex, France.
Mar Pollut Bull. 2014 Jul 15;84(1-2):379-90. doi: 10.1016/j.marpolbul.2014.05.002. Epub 2014 Jun 6.
In order to assess the environmental quality of the Bizerte lagoon (Tunisia), biomarker and contaminant levels were measured in Mediterranean mussels (Mytilus galloprovincialis) from five selected sites. Persistent organic pollutants (POPs) were quantified in whole body and enzyme activities such as acetylcholinesterase (AChE), catalase (CAT) and glutathione S-transferase (GST) in gills. Despite the relatively low levels of organic contaminants, the selected biomarkers responded differently according to the pollution level at the different sites. GST and AChE activities were correlated with the amount of DDTs in mussel tissues. These two enzymatic activities were also correlated to temperature and pH. No significant difference was observed for CAT activity. Principal component analysis showed a clear separation of sampling sites in three different assemblages which is consistent with POP body burden in mussels. Our results confirmed the usefulness of combining biomarker and chemical analyses in mussels to assess chemical pollution in the Bizerte lagoon.
为了评估比塞大泻湖（突尼斯）的环境质量，在五个选定的地点测量了贻贝（Mytilus galloprovincialis）中的生物标志物和污染物水平。在贻贝整体和鳃中的酶活性（如乙酰胆碱酯酶（AChE）、过氧化氢酶（CAT）和谷胱甘肽 S-转移酶（GST））中定量了持久性有机污染物（POPs）。尽管有机污染物的含量相对较低，但所选的生物标志物根据不同地点的污染水平表现出不同的反应。GST 和 AChE 活性与贻贝组织中 DDTs 的含量相关。这两种酶活性也与温度和 pH 值相关。CAT 活性没有显著差异。主成分分析显示，采样点在三个不同的组合中明显分开，这与贻贝体内的 POP 负荷一致。我们的结果证实了在贻贝中结合生物标志物和化学分析来评估比塞大泻湖的化学污染的有用性。
