Agglutinin activity in hemolymph of Chinese shrimp and induction effect of Vibrio

Absttsct-Experiments showed the agglutinin activity in the hemolymph of both spring wild parents and autumn cultured individuals of the shrimp Penaeus chinensis Osbeck with the body length of 12-16 cm as all 32.The hemolymph of the above shrimps showed agglutinant reaction to all A-, B-, and O-type human erythrocytes, with the reaction titer equal to that of rabbit blood cells.However, the agglutinin activity level was enhanced after being induced by Vibro, which was 128 after 24 h of induction and reached the peak value 256 after 48 h of induction, then decreased graduaVy.