한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제41권1호
  • /
  • Pages.1-6
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  • 2008
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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급격한 염분변화에 따른 담수어 3종의 프로락틴 및 성장호르몬 유전자 발현변화

Changes in Prolactin and Growth Hormone Gene Expression in Three Freshwater Teleosts with Rapid Changes in Salinity

  • 박우동 (강릉대학교 해양생명공학부) ;
  • 이철호 (국립수산과학원 영동내수면연구소) ;
  • 김대중 (국립수산과학원 양식연구본부 양식관리팀) ;
  • 손영창 (강릉대학교 해양생명공학부)
  • Park, Woo-Dong (Division of Marine Molecular Biotechnology, Faculty of Marine Bioscience and Technolohy, Kangnung National University) ;
  • Lee, Cheul-Ho (Yeongdong Inland Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Kim, Dae-Jung (Aquaculture Research Team, Headquarters for Aquaculture, National Fisheries Research and Development Institute) ;
  • Sohn, Young-Chang (Division of Marine Molecular Biotechnology, Faculty of Marine Bioscience and Technolohy, Kangnung National University)
  • 발행 : 2008.02.29
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초록

The changes in osmolality and the gene expression profiles of prolactin (PRL) and growth hormone (GH) with rapid changes in salinity were compared in the eel (Anguilla japonica), crucian carp (Carassius carassius), and masu salmon (Oncorhynchus masou). Fish stocked in freshwater (FW) were abruptly transferred to experimental tanks containing FW, 50% seawater (50% SW), or 100% SW (SW). Blood samples and pituitary glands were collected 2 and 24 hrs after the exposure. No mortality was observed in SW eel (n=6), whereas all of the crucian carp (n=6) and two masu salmon (n=6) exposed to SW died after land 24 hrs, respectively. The PRL mRNA levels of the eel and masu salmon decreased in 50% SW and SW compared to those of the fish kept in FW after 24 hrs, whereas the PRL levels of crucian carp were higher in 50% SW than in FW. Unlike the PRL mRNA levels, the GH mRNA levels of the eel did not differ significantly among three different salinities, while the GH mRNA levels of crucian carp and masu salmon increased significantly in 50% SW and SW after 24 hrs. The serum osmolalities increased marginally in the eel and masu salmon in 50% SW at 24 hrs (19% and 9%, respectively), whereas those of crucian carp increased abruptly in 50% SW (50% increase). These results suggest that the synthesis of PRL and GH is important in relation to the osmoregulatory system with environmental changes in salinity.

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피인용 문헌

  1. Physiological mechanism of osmoregulatory adaptation in anguillid eels 2018, https://doi.org/10.1007/s10695-018-0464-6