Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Life Cycle, Morphology and Gene Expression of Harpacticoid Copepod, Tigriopus japonicus s.l. Exposed to 4-nonylphenol

4-nonylphenol에 노출된 저서성 요각류 Tigriopus joponicus s.l.의 생활사, 형태와 유전자 발현

  • Bang, Hyun-Woo (Division of Marine Technology, Chonnam National University) ;
  • Lee, Won-Choel (Department of Life Science, Hanyang University) ;
  • Lee, Seung-Han (Department of Life Science, Hanyang University) ;
  • Kwak, Inn-Sil (Division of Marine Technology, Chonnam National University)
  • Published : 2008.03.31
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Abstract

The eco-toxicological effects of endocrine disrupter, 4-nonylphenol (4NP) were observed and detected on the harpacticoid copepod, Tigriopus japonicus s.l. obtained and cultur-ed from our coast. There were no significant differences survival rate, sex ratio, and fecundity on T. japonicus s.l. at as low as $30{\mu}gL^{-1}$ of 4 NP exposure. Whereas, 4NP induced developmental delay, decreasing biomass and body size of nauplius and copepodite. Also, Differentially Expressed Gene (DEG) was conducted to detecting gene expression for potential biomarkers response to 4NP. As a result, full lifecycle research on morphology and gene expression of T. japonicus s.l. suggested potential bioindicators or biomarkers for environmental monitoring and assessments.

우리나라 연안의 저서성 요각류 Tigriopus japonicus s.l.를 대상으로 내분비계 교란물질인 4-nonylphenol에 대한 생태독성 반응을 연구한 결과, 4NP는 $30{\mu}g\;L^{-1}$이하에서는 농도에 관계없이 생존율에는 영향을 주지 않았으며, 포란율, 부화율 등 생식 능력의 저하 현상 역시 찾아 볼 수 없었다. 그러나 노출된 T. japonicus s.l. nauplius 유생과 copepodite 유생은 모든 농도에서 대조군보다 성장이 지연되는 것으로 나타났으며, 처리 농도가 높아질수록 개체의 크기와 생체량이 줄어드는 것으로 나타났다. 또한 DEG를 이용한 유전자 발현의 차이를 확인하여 biomarker로서 가능성을 지닌 유전자를 확인해 볼 수 있었다. 추후 형태학적 연구와 분자생물학적인 연구를 계속 진행하여 생태계 평가를 할 수 있는 실질적인 생체지표 개발을 할 수 있을 것으로 생각된다.

Keywords

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