한국어병학회지 (Journal of fish pathology)

  • 제21권2호
  • /
  • Pages.139-148
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  • 2008
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  • 1226-0819(pISSN)
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  • 2233-5412(eISSN)
한국어병학회 (The Korean Society of Fish Pathology)
권호 표지

인공종묘 생산 감성돔 (Acanthoparus schlegelii) 치어의 척추 변형에 관하여

Vertebral abnormality in Hatchery-reared Black Sea Bream (Acanthoparus schlegelii) fingerlings

  • 박성우 (군산대학교 수산생명의학과) ;
  • 노윤산 (군산대학교 수산생명의학과) ;
  • 유진하 (군산대학교 수산생명의학과) ;
  • 김진도 (국립수산과학원 남부내수면연구소)
  • Park, Sung-Woo (Department of Aquatic life Medicine, Kunsan National University) ;
  • No, Yun-San (Department of Aquatic life Medicine, Kunsan National University) ;
  • Yu, Jin-Ha (Department of Aquatic life Medicine, Kunsan National University) ;
  • Kim, Jin-Do (Inland Aquaculture Research Institute, NFRDI)
  • 발행 : 20080800
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초록

Vertebral deformity in hatchery-reared black sea bream (Acanthoparus schlegelii) fingerlings occurred. Deformed fish had a good appetite but no clinical signs were found except the vertebral abnormality and darkness around the dorsal skin of the deformed vertebra. As more than 90% of the hatchery-reared fish exhibited vertebral abnormality, the fingerlings could not be used for commercial seeds any more. No morphological change in the swim bladder was observed. Histopathological changes on the deformed vertebra, gill, liver, and spleen were observed to clarify the cause of the deformity. The vertebra were irregularly deformed upward with the shape of "V" in an alphabetic character causing the spinal cord and dorsal aorta suppressed. The diameters of the muscle fibers around the deformed vertebra, especially, in the dorsal part, were much smaller and more irregular than those in normal fish, and the gabs between the fiber bundles were enlarged. No evidence of inflammatory responses in the lateral musculature were found. On the basis of normal inflation of the swim bladder, cultural environments for growth of the fingerlings, and histopathological alterations in the muscle, vertebra and gills, it is suggested that high speed of water current in the culturing aquaria between 23 to 30 days after hatching was responsible for the development of vertebral abnormality.

키워드

참고문헌

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