Université de Nantes, MMS, EA2160, LUNAM université, Faculté de Pharmacie, 1 rue G. Veil, BP 53508, 44035 Nantes Cedex 1, France.
Mar Pollut Bull. 2012 Oct;64(10):2233-7. doi: 10.1016/j.marpolbul.2012.06.019. Epub 2012 Jul 7.
Responses of biological indices and oxidative stress biomarkers were studied in the giant clam Tridacna maxima and in the fish Epinephelus merra collected from two sites differing by their level of contamination in the French Polynesian Moorea island. Higher levels of catalase (CAT), glutathione-S-transferases (GST) and thiobarbituric acid reactive substances (TBARs) were observed in the hepatopancreas of T. maxima and in the liver of E. merra compared to muscle. CAT and TBARs levels were significantly higher in the hepatopancreas of clams collected from the impacted site (Vaiare) compared to the reference site (bay of Cook). The same pattern was observed for TBARs levels in the liver of E. merra. These results indicate that both organisms from the impacted site were exposed to contaminants leading to an oxidative stress and demonstrate, for the first time, the usefulness of T. maxima and E. merra as sentinel species for biomonitoring reef environments.
本研究比较了来自法属波利尼西亚莫雷阿岛两个不同污染水平地点的大砗磲（Tridacna maxima）和马拉巴石斑鱼（Epinephelus merra）的生物指标和氧化应激生物标志物的反应。与肌肉相比，大砗磲的肝胰腺和石斑鱼的肝脏中过氧化氢酶（CAT）、谷胱甘肽-S-转移酶（GST）和硫代巴比妥酸反应物质（TBARs）的水平更高。与参考点（库克湾）相比，来自受影响点（Vaiare）的大砗磲的肝胰腺中 CAT 和 TBARs 的水平显著更高。马拉巴石斑鱼肝脏中的 TBARs 水平也呈现出相同的模式。这些结果表明，来自受影响地点的两种生物都接触到了导致氧化应激的污染物，并首次证明大砗磲和马拉巴石斑鱼可用作珊瑚礁环境生物监测的指示物种。
