Comparasion of some immune parameters between different strains of large yellow croaker (Larimichthys crocea)

We determined some immune parameters between the selected strain named Minyou No.1 and common culture strain of large yellow croaker(Larimichthys crocea).The results showed that the activities of lysozyme and SOD in blood cells of the Minyou No.1 were significantly higher than those in the common group(P0.05).While the immune globulin levels of Minyou No.1 was lower than that of the common group.Furthermore,a lower cumulative mortality was found in Minyou No.1 after artifically infected with Vibrio parahaemolyticus in 8 days,which suggested that non-specific immunity might play a more important role in the early stage of large yellow croaker defense against pathogenic-infection.