Investigation Of Bacterial And Viral Infection In Tilapia (Oreochromis Sp.) And Asian Seabass (Lates Calcarifer) Cultured In Vietnam

Abstract

With the aim of providing a scientific database and an overview of the pathogens that mono-infected and co-infected tilapia (Oreochromis sp.) and Asian seabass (Lates calcarifer) cultured in Vietnam, samples were collected in Ha Noi, Hai Duong, Hai Phong, Hue, Cam Ranh, Khanh Hoa, Vinh Long, Ben Tre, and Soc Trang. Bacterial pathogens are isolated by TSA with or without 1.5% NaCl, RS, TCBS, MA, and EIM. We have identified 76 bacterial pathogens from 49 tilapia samples and 120 on 65 seabass samples. The primary bacterial pathogens isolated from Asian seabass were Vibrio harveyi, Vibrio vulnificus and Photobacterium damselae damselae, while Bacillus cereus and Streptococcus agalactiae were the major bacterial pathogens found on tilapias. There were three seabass samplesshowing the appearance of ISKNV, and no virus pathogens were found on tilapia.