Mycobacteriosis in cultured striped bass from California.
Striped bass (Morone saxatilis) juveniles raised in an intensive culture system had chronic mortality resulting from infections with Mycobacterium marinum. Approximately one-half of a population of 900 yearlings succumbed to the disease and 80% of those remaining were infected. The bacteria were isolated on Petrignani's medium after 7 days at 25 C and subcultures grew at temperatures from 20 to 37 C. The disease was characterized by systemic nodular lesions in all major organs. Older tubercles contained numerous acid-fast bacilli. Chemotherapy by feeding rifampin (6 mg/100 g of food for 60 days) was not an effective treatment. Subclinical mycobacteriosis in adult striped bass may be the source for vertical transmission to their progeny.
D000818:Animals; D001492:Bass / Q000382:microbiology*; D002140:California; D005393:Fish Diseases / Q000453:epidemiology / Q000382:microbiology* / Q000473:pathology; D009164:Mycobacterium Infections / Q000662:veterinary*; D009165:Mycobacterium Infections, Nontuberculous / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D010473:Perciformes / Q000382:microbiology*