Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Changes of Blood Parameters in Korean rockfish Sebastes schlegeli Subjected to Acute Hypoxia at Different Water Temperatures

수온별 저산소 노출에 따 른 조피볼락 (Sebastes schlgeli)의 혈액성상 변화

  • Jee, Bo Young (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI)) ;
  • Do, Yong Hyun (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI)) ;
  • Min, Byung Hwa (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI)) ;
  • Park, Mi Seon (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI)) ;
  • Hwang, Hyung Gyu (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI)) ;
  • Myeong, Jeong In (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI)) ;
  • Cho, Jae Kwon (Aquaculture Management Division, National Fisheries Research & Development Institute (NFRDI))
  • 지보영 (국립수산과학원 양식관리과) ;
  • 도용현 (국립수산과학원 양식관리과) ;
  • 민병화 (국립수산과학원 양식관리과) ;
  • 박미선 (국립수산과학원 양식관리과) ;
  • 황형규 (국립수산과학원 양식관리과) ;
  • 명정인 (국립수산과학원 양식관리과) ;
  • 조재권 (국립수산과학원 양식관리과)
  • Received : 2015.09.10
  • Accepted : 2015.12.02
  • Published : 2015.12.31
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Abstract

The objective of this study was to evaluate the effects of acute hypoxia on the physiological stress responses (plasma cortisol as the primary response, and hematocrit, hemoglobin, plasma glucose, sodium, chloride, osmolality, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) as the secondary responses) of Korean rockfish. The mortality in Korean rockfish started at $0.7mg\;L^{-1}$ and $0.8mg\;L^{-1}$ levels at $12^{\circ}C$ and $20^{\circ}C$, respectively. And the time required for the mortality in experimental fish was 274 and 148 minutes at $12^{\circ}C$ and $20^{\circ}C$, respectively. Levels of hematocrit, hemoglobin, AST, ALT, ion concentration, osmolality, glucose and cortisol had significantly increased with decreasing dissolved oxygen at $12^{\circ}C$ and $20^{\circ}C$.

$12^{\circ}C$에서 DO 농도가 $0.7mg\;L^{-1}$일 때 조피볼락의 폐사가 발생하였으며, 소요시간은 274분이었다. $20^{\circ}C$에서는 DO 농도가 $0.8mg\;L^{-1}$일 때 조피볼락의 폐사가 발생하였으며, 소요시간은 148분이었다. DO 농도의 감소는 스트레스 요인으로 작용하여 $12^{\circ}C$와 $20^{\circ}C$에서 1차적으로 코티졸 및 글루코스 농도를 상승시켰다. 또한 Ht, Hb, AST, ALT, 이온 농도, 삼투질 농도도 $12^{\circ}C$와 $20^{\circ}C$에서 폐사 직전에 증가하는 경향을 보였다.

Keywords

References

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