Avsever, Meriç LütfiÖz, M.13.07.20192019-07-1613.07.20192019-07-1620160108-0288https://hdl.handle.net/20.500.12451/2394Grimontia hollisae (syn. Vibrio holisae) is a pathogenic Vibrio species known to cause gastroenteritis in humans after the consumption of shellfish. Pathogenicity of the agent is related to virulence genes, including genes encoding for haemolysins. Important hemolysin genes found in Vibrio spp. include thermo stable direct hemolysin (tdh) and tdh related hemolysin (trh). In this study, 24 G. hollisae isolates, recovered from 161 oyster (Ostrea edulis, L., 1758) sample groups originating from Bahkesir and Ay vahk (northwest of Turkey) provinces, were investigated for the presence tdh and trh genes. The prevalence for these were found to be tdh (100 %), trh (0 %) respectively. This study is the first demonstration of tdh positive G. hollisae associated with bivalve molluscs in Turkey.eninfo:eu-repo/semantics/openAccessConference Object365186192Q2N/A