Response of PAHs exposure in seawater to the lipid peroxidation in Lateolabrax japonicus

Lateolabrax japonicus was used to test the lipid peroxidation response of PAHs and pyrene exposure in seawater, and MDA (malondialdehyde) concentrations were determined in different tissue samples of Lateolabrax japonicus (such as liver, gill and whole blood). MDA concentrations are often used to indicate lipid peroxidation level in tissues. The higher MDA concentrations in tissues,the stronger lipid peroxidation and higher oxidative stress in tissues. The results showed that: (1) MDA concentrations in gill and whole blood were higher than that in liver. (2) The exposure of PAHs or pyrene could induce the lipid peroxidation process.(3) MDA concentration in fish liver was reversible to the exposure of different PAHs pollution levels and positive relevant to PAHs and pyrene concentrations. Thus, it could be used as biomarker and early warning indicator for PAHs pollution.