Characterization of Vibrio parahaemolyticus isolated from farmed sea bass (Dicentrarchus labrax) during disease outbreaks

• Published in: International aquatic research Vol. 5; no. 1; pp. 1 - 13
• Main Authors: Khouadja, Sadok, Lamari, Faouzi, Bakhrouf, Amina
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2013; Islamic Azad University, Tonekabon Branch, Vali abad; BioMed Central Ltd
• Subjects: Aquaculture; Aquatic Pollution; Bacteria; Bass; Body organs; Cages; Dicentrarchus labrax; Disease outbreaks; Earth and Environmental Science; Ecotoxicology; Environment; Farms; Fish; Fish culture; Fish farms; Freshwater & Marine Ecology; Marine & Freshwater Sciences; Marine fish; Marine fishes; Microbiological strains; Mortality causes; Organs; Original Research; Pathogens; Sea bass; Strains (organisms); Toxicity tests; Vibrio parahaemolyticus; Virulence; Waste Water Technology; Water; Water Management; Water Pollution Control; Virulence properties; Outbreaks
• ISSN: 2008-4935; 2008-6970; 2008-6970
• DOI: 10.1186/2008-6970-5-13

Vibrio parahaemolyticus was isolated from the internal organs of diseased sea bass ( Dicentrarchus labrax ) cultured in a marine cage farm and an inshore fish farm in the summer 2010. All strains isolated from diseased sea bass were tested for virulence by intraperitoneal injection. The isolates ( n  = 6) were pathogenic for sea bass. Only bacterial strains showing haemolytic activity were virulent. LD50 values ranged from 3.52 × 10 4 to 2.29 × 10 6  cfu fish −1 . In this study, we report the characterization and the virulence of V. parahaemolyticus strains isolated from sea bass originating from two different fish farms (marine cage farm and inshore fish farm in Tunisia).