Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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Isolation of Streptococcus parauberis from starry flounder, Platichthys stellatus Pallas

양식 강도다리, Platichthys stellatus Pallas에서 분리된 Streptococcus parauberis의 특성

  • Cho, Mi-Young (Pathology Division, National Fisheries Research and Development Institute) ;
  • Lee, Jae-Il (Pohang Fisheries Office, NFRDI) ;
  • Kim, Myoung-Sug (Pathology Division, National Fisheries Research and Development Institute) ;
  • Choi, Hee-Jung (Pathology Division, National Fisheries Research and Development Institute) ;
  • Lee, Deok-Chan (Pathology Division, National Fisheries Research and Development Institute) ;
  • Kim, Jin-Woo (Pathology Division, National Fisheries Research and Development Institute)
  • 조미영 (국립수산과학원 병리연구과) ;
  • 이재일 (포항수산사무소) ;
  • 김명석 (국립수산과학원 병리연구과) ;
  • 최희정 (국립수산과학원 병리연구과) ;
  • 이덕찬 (국립수산과학원 병리연구과) ;
  • 김진우 (국립수산과학원 병리연구과)
  • Published : 20081200
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Abstract

A disease with mass mortality characterized exophthalmia and abdominal distension by ascites occurred in farmed starry flounder, Platichthys stellatus in Pohang since October of 2007. Severe necrosis and infiltration of inflammatory cells were observed in tissue histopathological sections from liver, kidney, spleen and heart of the diseased fish. The catalase-negative and gram positive cocci with -hemolysis were isolated from moribund fish. Analysis of the API profiles and the multiplex PCR of the isolates showed that strains were identified as Streptococcus parauberis. In API profiles, S. parauberis isolated from starry flounder differed from those of olive flounder, Paralichthys olivaceus to the test of arginine dihydrolase, D-mannitol, D-sorbitol and α-lactose. And the strains, PH0710 and PH0711, were strongly lethal for starry flounder (LD50 ranging from 4.2×103~4.2×102 cfu/fish at 7 days after intraperitoneally inoculation). This is the first report on a S. parauberis infection in starry flounder.

Keywords

References

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