抄録
The protective value of antibody of maternal origin was examined in larvae of red sea bream. Eggs and larvae from the mother fish, immunized with Vibrio vaccine, were incubated for about 1 month, and the immunoglobulin (IgM) amount and antibody titre were monitored. IgM and antibody against Vibrio were recognized in the eggs. However the levels acutely diminished within a few days after hatching. On day 20 to 25, the IgM concentrations but not antibody titres increased again, indicating the beginning of their synthesis. These results imply the maternal antibody has no protective function in the larvae.
