한국어류학회지 (Korean Journal of Ichthyology)

  • 제17권1호
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  • Pages.43-48
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  • 2005
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

단계적 염분변화가 Striped bass 잡종 (Morone chrysops × M. saxatilis)의 생리적 반응에 미치는 영향

Effects of Gradual Change of Salinity on Physiological Response in Hybrid Striped Bass (Morone chrysops × M. saxatilis)

  • 임한규 (국립수산과학원 양식관리팀) ;
  • 한형균 (국립수산과학원 어류연구센터) ;
  • 이종하 (국립수산과학원 어류연구센터) ;
  • 정민환 (부경대학교 양식학과) ;
  • 허준욱 (한국해양대학교 해양과학기술연구소)
  • Lim, Han Kyu (Aquaculture Management Team, National Fisheries Research and Development Institute) ;
  • Han, Hyoung-Kyun (AquacultFinfish Research Center, National Fisheries Research and Development Institute) ;
  • Lee, Jong Ha (AquacultFinfish Research Center, National Fisheries Research and Development Institute) ;
  • Jeong, Min Hwan (Department of Aquaculture, Pukyong National University) ;
  • Hur, Jun Wook (Research institute of Marine Science and Technology, Korea Maritime University)
  • 투고 : 2004.11.02
  • 심사 : 2005.01.17
  • 발행 : 2005.03.31
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초록

단계적인 방법에 의해 해수에서 담수로의 염분 하강과 담수에서 해수로의 염분 상승에 대한 잡종 striped bass (Morone chrysops ♀ ${\times}$ M. saxatilis ♂)의 생리적 반응을 조사하였다. 단계적인 염분 변화는 혈중 cortisol 농도의 상승을 동반하지 않았으나, 혈중 glucose 농도는 상승하였다. 혈장의 삼투질 농도와 $Na^+$, $Cl^-$ 농도는 염분상승과 함께 유의하게 증가하였으나, 염분 하강 때는 차이를 보이지 않았다. 이상의 실험 결과들은 잡종 striped bass는 단계적인 염분변화에 매우 효과적으로 적응하고 있음을 보여주고 있으며, 염분 스트레스에 강한 광염성 어종임을 입증하였다.

We investigated physiological responses of hybrid striped bass (Morone chrysops ${\times}$ M. saxatilis) to gradual changes of salinity from 33 psu to 0 psu and from 0 psu to 33 psu in two separate trials. Gradual salinity change was not accompanied by an increase in cortisol level in the plasma however, the glucose level in the plasma increased. $Na^{+}$, $Cl^{-}$ and osmolality significantly increased with rising salinity, but they did not change with dropping salinity. The hybrid striped bass adjusted effectively without stress to the gentle change of salinity.

키워드

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