Streptococcus iniae infections in Red Seacage-cultured and wild fishes

Diseases of Aquatic Organisms

A. Zlotkin¹  H. Kvitt¹  A. Colorni¹  A. Diamant¹  A. Eldar¹ 

关键词: Fish disease;    Mariculture;    Red drum;    Sciaenops ocellatus;    Sea bass;    Dicentrarchus labrax;    Tilapia;    Oreochromis mossambicus;    16S rRNA;    PCR;   

DOI  :  10.3354/dao049165

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Streptococcus iniae was isolated from 2 moribund wild Red Sea fishes, Pomadasys stridens (Pomadasyidae) and Synodus variegatus (Synodontidae), both collected in shallow waters along the Israeli coast of the Gulf of Eilat.The site is approximately 2 km from a mariculture cage farm in which streptococcal infections were diagnosed in previous years in the red drum Sciaenops ocellatus. This is the first report of S. iniae in Red Sea fishes. Biochemical andmolecular similarities between the isolates from cultured fishes and those from the wild specimens suggest that a single strain is involved, and that Œamplification¹ and dispersal of this pathogen from captive to feral fishes have occurred. At themolecular level, the pathogen is different from the S. iniae isolates that have been afflicting the Israeli freshwater aquaculture in recent years. Although S. iniae prevalence in the wild fish populations of the area remains to bedetermined, the northernmost region of the Gulf of Eilat, virtually landlocked and with generally calm seas and weak currents, seems to be particularly vulnerable to the impact of diseases that develop in this mariculture system.

【 授权许可】

Unknown