Fernandes C, Fontaínhas-Fernandes A, Peixoto F, Salgado M A
ESA-Escola Superior Agrária, Instituto Politécnico de Bragança, CIMO-Centro de Investigação de Montanha, Campus de Santa Apolónia, Apartado 1172, 5301-854 Bragança, Portugal.
Ecotoxicol Environ Saf. 2007 Mar;66(3):426-31. doi: 10.1016/j.ecoenv.2006.02.007. Epub 2006 Apr 18.
Heavy metal (Cu and Zn) concentrations in liver, gills, and muscle of leaping grey mullet, Liza saliens, from the Portuguese Esmoriz-Paramos coastal lagoon were measured to evaluate their bioaccumulation as a function of sediment contamination. The highest metal concentrations were observed in the liver (254 mg Cu kg(-1)) and gills (114 mg Zn kg(-1)). Bioaccumulation factors (BAFs) were found to follow the order: Cu-liver>Cu-gills>Cu-muscle and Zn-gills>Zn-liver>Zn-muscle. The highest BAFs were observed in the organs mainly implicated in metal metabolism and a significant positive relationship was found between BAFs and fish age. These results suggest the loss of homeostatic capacity of L. saliens under chronic metal exposure leading to bioaccumulation. Furthermore, Cu-liver and Zn-gills accumulation can be good environmental indicators of metal stress in L. saliens.
为评估葡萄牙埃斯莫里兹 - 帕拉莫斯沿海泻湖的跃鲻（Liza saliens）肝脏、鳃和肌肉中重金属（铜和锌）的生物累积情况与沉积物污染的关系，对其进行了测量。在肝脏（254毫克铜/千克）和鳃（114毫克锌/千克）中观察到最高的金属浓度。生物累积因子（BAFs）的顺序为：铜 - 肝脏>铜 - 鳃>铜 - 肌肉，锌 - 鳃>锌 - 肝脏>锌 - 肌肉。在主要参与金属代谢的器官中观察到最高的生物累积因子，并且生物累积因子与鱼的年龄之间存在显著的正相关关系。这些结果表明，长期暴露于金属环境下，跃鲻的稳态能力丧失，导致生物累积。此外，肝脏中的铜和鳃中的锌累积情况可作为跃鲻金属应激的良好环境指标。
