Study on oxidative stress and damage of Cyclina sinensis exposed to naphthalene

The SOD, CAT, AKP activities and MDA content were determined after Cyclina sinensis were exposed to different concentrations (2 mgL-1, 8 mgL-1 and 32 mgL-1) of naphthalene under experimental ecotoxicology conditions. The results indicate that C.sinensis had high mortality rate under 32 mgL-1 of naphthalene. Under non-lethal conditions and with increase of naphthalene exposure time, SOD activity showed a continuous increasing trend; CAT activity was promoted in low-concentration group and inhibited in high-concentration group; AKP activity was initially increasing then decreasing; MDA content fluctuated following the trend of lowhighlow. According to Pearson correlation analysis, SOD and CAT showed synergistic effect (R=0.439, P0.01), while SOD and AKP showed antagonism effect (R=-0.571, P0.01). CAT and AKP might protect cellular membrane structure better than SOD (R=-0.490, P0.01).