Histopathology of streptococcosis in rainbow trout (Oncorhynchus mykiss Walbaum)


Altun S., Diler A., Diler O. , Basak K., Isikli B.

BULLETIN OF THE EUROPEAN ASSOCIATION OF FISH PATHOLOGISTS, vol.25, no.3, pp.131-135, 2005 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 3
  • Publication Date: 2005
  • Title of Journal : BULLETIN OF THE EUROPEAN ASSOCIATION OF FISH PATHOLOGISTS
  • Page Numbers: pp.131-135

Abstract

The histopathology of Lactococcus garvieae induced streptococcosis in rainbow trout were characterized. Diseased fish showed bilateral exophthalmia, dark discoloration, distended abdomen caused by an accumulation of clear fluid in the stomach and intestines, and diffuse haemorrhage at the base of fins. Histopathological examination revealed lesions in the liver, kidney, spleen, gills and stomach. The liver was congested and microvesicular changes increased in hepatocytes. Necrosis and haemorrhage were observed in the kidney and spleen.