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Monitoring of infectious diseases in three grouper species (Hyporthodus septemfasciatus, Epinephelus moara and E. moara ♀× E. lanceolatus ♂) cultured in recirculating aquaculture systems

순환여과시스템에서 양식되는 바리과 어류 3종[능성어, (Hyporthodus septemfasciatus), 자바리(Epinephelus moara), 교잡종 대왕자바리(E. moara ♀× E. lanceolatus ♂)]의 감염성 질병 모니터링

  • Hee-Jae Choi (Department of Aquatic Life Medicine, Kunsan National University) ;
  • Da-Yeon Choi (Department of Aquatic Life Medicine, Kunsan National University) ;
  • SungHyun Jo (Department of Aquatic Life Medicine, Kunsan National University) ;
  • JeYun Shin (Department of Aquatic Life Medicine, Kunsan National University) ;
  • Jong Yeon Park (Daejeon Regional institute of industrial advancement) ;
  • In-chul Bang (Department of Life Science & Biotechnology, Soonchunhyang University) ;
  • Yue Jai Kang (Department of Aquatic Life Medicine, Kunsan National University)
  • 최희재 (군산대학교 수산생명의학과) ;
  • 최다연 (군산대학교 수산생명의학과) ;
  • 조성현 (군산대학교 수산생명의학과) ;
  • 신제윤 (군산대학교 수산생명의학과) ;
  • 박종연 (대전지역산업진흥원) ;
  • 방인철 (순천향대학교 생명과학과) ;
  • 강예재 (군산대학교 수산생명의학과)
  • Received : 2024.05.21
  • Accepted : 2024.06.12
  • Published : 2024.06.30

Abstract

The Serranidae is high-quality fish species with good meat quality and is traded at high price, and is attracting attention in South Korea as a cultured species that creates high added value. However, the high-density fish farming for mass production increases the risk of mass mortality due to infectious diseases, leading to enormous economic losses. Therefore, in order to safely prevent and protect farmed fish from serious infectious diseases, it is necessary to conduct disease monitoring on a regular basis. In this study, Hyporthodus septemfasciatus, Epinephelus moara, and the hybrid longtooth grouper (E. moara ♀×E. lanceolatus ♂) were collected once a month from fish farm of Garorim and Aquabiotech Co., Ltd for a total of six months, from July to December 2023. We investigated infections of five species of bacterial diseases, including Flavobacterium columnare, six species of viral diseases, including LCDV (lymphocystis disease virus), and parasitic pathogens in grouper farms. As the result, Vibrio vulnificus and V. harveyi were detected in H. septemfasciatus in August, in the case of viral diseases, NNV was detected in H. septemfasciatus from July to August using RT-PCR or PCR. Finally, In the case of parasitic diseases, Tricodina sp. was detected in E. moara and the hybrid longtooth grouper from August to December.

Keywords

Acknowledgement

이 논문은 2023년도 정부(해양수산부)의 재원으로 해양수산과학기술진흥원-해양수산 신산업기술사업화(R&D)의 내수시장 활성화 사업 지원을 받아 수행된 연구임(RS-2023-000243369).

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