Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Effect of Fish Pathogenic Viruses on Mariculture of Rainbow Trout (Oncorhynchus mykiss)

해수사육 무지개송어 (Oncorhynchus mykiss)에 미치는 어류 병원성 바이러스의 영향

  • Kim, Wi-Sik (Department of Aqualife Medicine, Chonnam National University) ;
  • Jang, Min-Seok (Department of Aqualife Medicine, Chonnam National University) ;
  • Kim, Jong-Oh (Department of Aqualife Medicine, Chonnam National University) ;
  • Jeon, Young-Ho (Jeollanam-do Ocean Fishery Science Institute) ;
  • Oh, Myung-Joo (Department of Aqualife Medicine, Chonnam National University)
  • 김위식 (전남대학교 수산생명의학과) ;
  • 장민석 (전남대학교 수산생명의학과) ;
  • 김종오 (전남대학교 수산생명의학과) ;
  • 전영호 (전라남도 해양수산과학원) ;
  • 오명주 (전남대학교 수산생명의학과)
  • Received : 2015.08.31
  • Accepted : 2015.09.24
  • Published : 2015.09.30
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Abstract

Recently, mariculture of rainbow trout (Oncorhynchus mykiss) has been initiated in the coast areas of Korea. In the present study, we investigated the effect of fish viruses on mariculture of rainbow trout. The pathogenicity of infectious hematopoietic necrosis virus (IHNV) and infectious pancreatic necrosis virus (IPNV) isolated from freshwater rainbow trout was tested against major cultured marine fish species, including olive flounder (Paralichtys olivaceus), rock fish (Sebastes schlegeli), rock bream (Oplegnathus fasciatus), red seabream (Pagrus major) and sevenband grouper (Epinephelus septemfasciatus). The pathogenicity of marine birnavirus (MABV), hirame rhabdovirus (HIRRV) and nervous necrosis virus (NNV) isolated from marine fish species was also tested against rainbow trout. No mortality was observed in marine fish species challenged with IHNV or IPNV. However, olive flounder and rock bream were infected by IHNV and IPNV. A mortality of 8.3% was observed in rainbow trout challenged with HIRRV. The fish was infected by both MABV and NNV. These results suggest that the mariculture of rainbow trout might be affected by fish viruses.

본 연구에서는 무지개송어의 해수면 양식장으로의 이동에 따라 나타날 수 있는 어류 병원성 바이러스의 영향을 알아보기 위해, 담수 무지개송어 유래 병원체인 infectious hematopoietic necrosis virus (IHNV)와 infectious pancreatic necrosis virus (IPNV)를 사용하여 주요 해산 양식 어종인 넙치, 조피볼락, 돌돔, 참돔 및 능성어에 주사한 후 병원성 및 감염 여부를 조사하였으며, 또한 해산 양식 어종 유래 병원체인 marine birnavirus (MABV), hirame rhabdovirus (HIRRV) 및 nervous necrosis virus (NNV)를 사용하여 무지개송어에 대한 병원성 및 감염 여부를 조사하였다. IHNV와 IPNV는 주요 해산 양식 어종에 감염되는 것으로 확인되었으며, 또한 무지개송어는 해산 유래 위해 병원체인 MABV와 NNV에 감염되거나 HIRRV에 의해 폐사되는 것으로 확인되었다. 이상의 연구 결과, 해수사육 무지개송어는 어류 병원성 바이러스들에 의해 영향 받을 수 있을 것으로 사료되었다.

Keywords

References

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