A Septicemic Bacterial Disease Syndrome of Penaeid Shrimp

A disease syndrome of penaeid shrimp characterized by the presence of a septicemic phase is described. Mortality due to the disease in infected shrimp populations typically ranged from 10 to 50%, but occasionally reached 100%. Vibrio alginolyticus, Vibrio anguillarum, and an Aeromonas species were isolated from moribund hatchery-reared white shrimp (Penaeus setiferus) and brown shrimp (Penaeus aztecus) and from wild white, brown, and pink shrimp (Penaeus duorarum). Each of these organisms were found to be pathogenic to shrimp when administered by intramuscular injection