Contaminant accumulation and biomarker responses in flounder (Platichthys flesus L) and Atlantic cod (Gadus morhua L) exposed by caging to polluted sediments in Sorfjorden, Norway

被引:139
作者
Beyer, J
Sandvik, M
Hylland, K
Fjeld, E
Egaas, E
Aas, E
Skare, JU
Goksoyr, A
机构
[1] UNIV BERGEN, LAB MARINE MOL BIOL, N-5020 BERGEN, NORWAY
[2] NATL VET INST, DEPT TOXICOL & CHEM, N-0033 OSLO, NORWAY
[3] NORWEGIAN INST WATER RES, N-0411 OSLO, NORWAY
关键词
marine fish; caging; pollutants; bioaccumulation; biomarkers;
D O I
10.1016/S0166-445X(96)00798-9
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Flounder (Platichthys flesus L.) and Atlantic cod (Gadus morhua L.) were subjected to caging at polluted sediments in a Norwegian fjord (Sorfjorden) for a period of 3 months. Three caging sites were located close to metal smelters, whereas a fourth site was located 30 km away as a reference. In sediment samples, polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and heavy metals were elevated at the innermost sites (1, 2 and 3) compared with the reference location (site 4). In fish, the biliary levels of fluorescent aromatic compounds (FACs) were elevated 5-20 fold in both species at the polluted sites. A two-fold difference in heavy metal levels was observed in cod (site 2 vs. 4), whereas no differences were seen in flounder. Pesticides bioaccumulated in a diffuse manner at all sites. In flounder at the innermost sites, plasma aspartate aminotransferase (AST) and hepatic cytochrome P450 1A (CYP1A) dependent 7-ethoxyresorufin O-deethylase (EROD) activity were elevated 4-5 and 5-10 fold, respectively, compared with the reference site. Both of these biomarkers were significantly correlated with FACs levels. For other biomarkers, the site effect was more marginal. The biomarkers seemed in general more responsive in flounder than in cod. The present study demonstrates biomarker measurements in caged fish as a promising approach for evaluating accumulation and effects of pollutants in marine teleosts.
引用
收藏
页码:75 / 98
页数:24
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