Passive immunization against red sea bream iridoviral disease in five marine fish species

Abstract

Passive immunization was performed to determine whether serum antibodies were involved in protection for red sea bream iridoviral disease (RSIVD) in Pagrus major, Seriola quinqueradiata, S. lalandi, S. dumerili and Oplegnathus fasciatus. When fish were experimentally challenged, significantly lower mortality was noted in the fish received the convalescent serum than control fish, except for O. fasciatus. The daministration of serum from fish immunized with a commercial vaccine, significantly suppressed mortality of the recipient, except for S. lalandi and O. fasciatus. The results suggest that serum antibodies play a primary orle ni the protection against RSIVD ni erd esa bream and the genus Seriola.