Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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First report and characteristics study of Cymothoids isolated from cultured flathead grey mullet (Chelon haematocheilus)

양식 가숭어(Chelon haematocheilus)에서 최초로 분리된 갈고리벌레과 Cymothoids의 특성 연구

  • Han-Gill Seo (Aquaculture Industry Division, South Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Myung-Joo Oh (Department of Aqualife Medicine, Chonnam National University) ;
  • Miyoung Cho (Pathology Research Division, National Institute of Fisheries Science) ;
  • Hyun-Ja Han (Pathology Research Division, National Institute of Fisheries Science)
  • 서한길 (국립수산과학원 남해수산연구소 양식산업과) ;
  • 오명주 (전남대학교 수산생명의학과) ;
  • 조미영 (국립수산과학원 병리연구과) ;
  • 한현자 (국립수산과학원 병리연구과)
  • Received : 2023.10.12
  • Accepted : 2023.10.31
  • Published : 2023.12.31
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Abstract

Mullet is an important marine aquaculture fish species in Korea, with a total of 7,237 tons produced as of 2022, making it the 5th most produced marine aquaculture fish species. In this study, ectoparasites presumed to be isopods were discovered in the fins of farmed flathead grey mullet (average weight 550 g), and the characteristics of the parasites were confirmed. The length of the parasite was 5 to 18 mm, and 3 to 7 parasites were infected per fish. To analyze the characteristics of the parasites, molecular biological identification and phylogenetic analysis were performed using the cytochrome c oxidase subunit I (COI) gene, and it was confirmed to be most closely related to Nerocila japonica in the Cymothoidae family. To confirm the parasite control effect, a direct exposure drug sensitivity test was conducted on five types of aquatic drugs and fresh water, trichlorfon was confirmed to be effective.

본 연구를 통해 한국의 양식 가숭어에서 최초로 분리된 등각류는 Nerocila japonica와 가장 근연한 종으로 확인되었으나, 향후 형태학적 분류 등 명확한 종 동정이 추가로 필요할 것으로 판단되며, 약물의 직접 노출에 의한 구충 효과를 확인한 결과 trichlorfon이 가장 효과가 있는 것으로 확인되었다.

Keywords

Acknowledgement

본 연구는 국립수산과학원(수산생물 질병 특성 연구, R2023051)의 지원에 의해 수행되었습니다.

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