Infectious pancreatic necrosis virus in striped bass Morone saxatilis: experimental infection of fry and fingerlings

Abstract

Four strains of striped bass M. saxatilis fry (1-20 d old) and fingerlings (26-189 d old), exposed to infectious pancreatic necrosis virus (IPNV), showed no clinical or histopathological signs of disease. Fish less than 20 d of age exposed to water-borne IPNV apparently developed only transitory infections and failed to produce IPNV-neutralizing activity. Fish 60 d or older inoculated with IPNV developed infections that persisted for at least 14 months.