Toxicity of salinity and alkalinity to　Lateolabrax japonicus fingerlings

Acute toxic experiments are carried out to test the tolerance of Lateolabrax japonicus to salinity and alkalinity.The median lethal concentrations (LC₅₀ values) of alkalinity (pH=8.44±0.16) to Lateolabrax japonicus fingerlings are 101.05mmol/L，63.27mmol/L,56.85mmol/L and 46.18mmol/L in 24h,48h,72h and 96h;sal-alkalinity mixture tests show that the 24h LC₅₀ values of alkalinity to Lateolabrax japonicus vary with salinity.The relationship between them is ALK=125.05-2.18S(n=7,r=0.9756).There is probably an interaction between salinity and alkalinity to some degree.