First report of Aeromonas veronii infection in farmed Israeli carp Cyprinus carpio in Korea

  • Yu, Jin-Ha (National Fisheries Products Quality Inspection Service, Mokpo Branch) ;
  • Han, Jung-Jo (Gyeonggi Province Freshwater Fisheries Research Institute) ;
  • Kim, Hyoung-Jun (National Fisheries Products Quality Inspection Service, Incheon Branch) ;
  • Kang, Sun-Gu (Gunsan Fisheries Office) ;
  • Park, Sung-Woo (Department of Aquatic Life Medicine, Kunsan National University, Gunsan, Jeollabukdo, Republic of Korea)
  • Received : 2009.12.24
  • Accepted : 2010.06.10
  • Published : 2010.08.30

Abstract

In May 2007, mass mortality of Israeli carp, Cyprinus carpio L., was occured on a pond farm located in Jeollabukdo Province, Korea. The mortality rates reached up to 2% of the total fish in the farm per day. Typical clinical signs were abdominal distension, reddish foci on the skin, enteritis, liver congestion and enlarged spleen and kidney. On the basis of biochemical characteristics and 16S rDNA sequence, the causative bacteria isolated from affected carp were identified as Aeromonas veronii. Histologically, degeneration of hepatocytes and congestion in sinusoids were observed in the liver. Spleen showed hemorrhage and the destruction of the sheathed tissues. In kidney, necrotized renal tubules and glomerular destructions were observed. Intestinal tissues revealed necrotized and severe hemorrhage. Mass hemorrhage was observed in muscles. This is the first report that A. veronii caused mortality in cultured Israeli carp in Korea.

Keywords

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