These results also suggested SOD was more sensitive to low concentration of Cu2+ than the others,and it could be served as bio-monitoring index of low concentration Cu2+ exposure in aquatic ecosystem.

• 当处于低浓度Cu2+溶液中时,牙鲆肌肉中的SOD较CAT和GSH-PX敏感,因此其可作为水生生态系统中Cu2+低浓度暴露的一种生物检测指标。