Skin Injuries Contribute to Nocardiosis in Japanese Amberjack Seriola quinqueradiata

Abstract

― We examined how mechanical damages to the skin and the infestation of the monogenean Benedenia seriolae on the skin affected Nocardia seriolae infection in Japanese amberjack Seriola quinqueradiata . After the skin was inflicted damages or after B. seriolae was dewormed with freshwater bathing, amberjacks were challenged with 1.0 × 10 3 CFU/mL N. seriolae by immersion. Survival rate was significantly lower in the skin-damaged group and the skin fluke-infested group than in their respec-tive control groups. The present study suggests that skin injuries and B. seriolae infection contribute to the N. seriolae infection in Japanese amberjack.