Pathogenicity of Vibrio harveyi to black rockfish, Sebastes schlegeli

조피볼락에 대한 Vibrio harveyi의 병원성

  • Choi, Jeong-Hyun (East Sea Mariculture Research Center, National Fisheries Research & Development Institute) ;
  • Won, Kyoung-Mi (Institute of Fisheries Science, Pukyong National University) ;
  • Sohn, Sae-Bom (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Park, Hyo-Jin (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Byun, Soon-Gyu (East Sea Mariculture Research Center, National Fisheries Research & Development Institute) ;
  • Lee, Bae-Ik (East Sea Mariculture Research Center, National Fisheries Research & Development Institute) ;
  • Lee, Jong-Ha (East Sea Mariculture Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Yi-Cheong (East Sea Mariculture Research Center, National Fisheries Research & Development Institute) ;
  • Park, Soo-Il (Department of Aquatic Life Medicine, Pukyong National University)
  • 최정현 (국립수산과학원 동해특성화연구센터) ;
  • 원경미 (부경대학교 수산과학연구소) ;
  • 손새봄 (부경대학교 수산생명의학과) ;
  • 박효진 (부경대학교 수산생명의학과) ;
  • 변순규 (국립수산과학원 동해특성화연구센터) ;
  • 이배익 (국립수산과학원 동해특성화연구센터) ;
  • 이종하 (국립수산과학원 동해특성화연구센터) ;
  • 김이청 (국립수산과학원 동해특성화연구센터) ;
  • 박수일 (부경대학교 수산생명의학과)
  • Published : 2007.08.30

Abstract

Vibrio harveyi, one of the major causal agent of vibriosis, affects a diverse range of marine vertebrates and invertebrates over a wide geographical area. The organism is synonymous with Vibrio carchariae, which is also known as a fish pathogen. The aims of this study were to investigate the characteristics of the pathogenic non-luminous V. harveyi and the luminous V. harveyi. And V. harveyi isolates were examined the pathogenicity to the black rockfish, Sebastes schlegeli. Both strains of V. harveyi showed haemolytic activity, and the survival rate of non-luminous V. harveyi FR 2 was higher than other strains in the skin, gut mucus and fresh serum of olive flounder, Paralichthys olivaceus and black rockfish, Sebastes schlegeli, respectively. The virulence of non-luminous V. harveyi FR 2 was higher than that of luminous V. harveyi VIB 391 in the intraperitoneally infected black rockfish. In conclusion, the present study revealed that the pathogenicity of V. harveyi FR 2 isolated from marine fish was higher than that of V. harveyi VIB 391 isolated from shrimp for black rockfish. It was suggested that the pathogenicity of V. harveyi on the black rockfish was related with bacterial luminescense.

본 연구는 V. harveyi의 luminescence 유무와 해수 어류에 대한 병원성의 관계를 알아보고자 non-luminous V. harveyi 와 luminous V. harveyi 분리 균주로 조피볼락에 대한 병원성 시험을 시행하였다. 시험 균주 V. harveyi 모두 haemolytic activity를 나타내었으며, 어체 내 생존능은 non-luminous V. harveyi 분리 균주 FR 2가 강한 생존능을 나타내었다. 또한 조피볼락에 인위 감염시, non-luminous V. harveyi 분리 균주 FR 2가 강한 병원성을 나타내었으며 luminous V. harveyi 분리 균주 VIB 391은 낮은 병원성을 나타내었다. 결론적으로 조피볼락에서는 non-luminous V. harveyi 분리 균주 FR 2가 강한 병원성을 나타내었으며 luminous V. harveyi 분리 균주 VIB 391은 매우 약한 병원성을 나타내어 luminescence의 유무에 따라 해수 어종에 대한 병원성의 차이가 있을 것으로 생각된다

Keywords

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