Barhoumi Sana, Messaoudi Imed, Deli Tmim, Saïd Khaled, Kerkeni Abdelhamid
Trace Elements, Free Radicals, Antioxidant Systems and Environment and Humain Pathology, Faculty of Medicine, 5000 Monastir, Tunisia.
J Environ Sci (China). 2009;21(7):980-4. doi: 10.1016/s1001-0742(08)62371-2.
To select a marine teleost fish which can be used as a bioindicator of cadmium (Cd) pollution in the Gulf of Gabes in Tunisia, Cd concentrations in liver and gill were compared in three benthic fish species including Salaria basilisca, Zosterisessor ophiocephalus and Solea vulgaris. Fish samples were collected from three selected sites in the Gulf of Gabes, with different degrees of Cd contamination: the industrialized coast of Sfax (S1), the coast of Douar Chatt (S2) and the coast of Luza (S3). The results shows that Cd concentrations in both sediment and water collected from S1 were significantly higher (p < 0.0001) than those from S2 and S3. For each species, Cd concentrations, in both liver and gill, showed the decreasing order: S1 > S2 > S3. The highest concentration of Cd was detected in the liver of S. basilisca, and only S. basilisca showed bioaccumulation factors (BAF) greater than 1 in all studied sites. In S1 and S2, BAF values respect the following order: S. basilisca > Z. ophiocephalus > S. vulgaris. These results of significant bioaccumulation of Cd, in terms of hepatic concentrations and bioaccumulation factors, indicated that S. basilisca can be used as bioindicator to evaluate the evolution of Cd pollution in the Gulf of Gabes.
为了选择一种可作为突尼斯加贝斯湾镉（Cd）污染生物指示物的海洋硬骨鱼，对三种底栖鱼类（包括巴西裂唇鱼、蛇头潜鱼和普通鳎）肝脏和鳃中的镉浓度进行了比较。从加贝斯湾三个选定的地点采集鱼类样本，这些地点的镉污染程度不同：斯法克斯工业化海岸（S1）、杜阿尔查特海岸（S2）和卢扎海岸（S3）。结果表明，从S1采集的沉积物和水中的镉浓度显著高于（p < 0.0001）从S2和S3采集的。对于每个物种，肝脏和鳃中的镉浓度均呈现出S1 > S2 > S3的递减顺序。在巴西裂唇鱼的肝脏中检测到最高的镉浓度，并且只有巴西裂唇鱼在所有研究地点的生物累积因子（BAF）均大于1。在S1和S2中，BAF值遵循以下顺序：巴西裂唇鱼 > 蛇头潜鱼 > 普通鳎。就肝脏浓度和生物累积因子而言，镉的显著生物累积结果表明，巴西裂唇鱼可作为评估加贝斯湾镉污染演变的生物指示物。
