Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Evaluation of Water Quality Using Fire-bellied Toad (Bombina orientalis) Embryos in Tancheon Basin

무당개구리 배아를 이용한 탄천 수계 수질에 대한 생물학적 평가

  • Park, Chan Jin (Department of Life Science, College of Natural Sciences, Hanyang University) ;
  • Song, Sang Ha (Department of Life Science, College of Natural Sciences, Hanyang University) ;
  • Kim, Dae Han (Department of Life Science, College of Natural Sciences, Hanyang University) ;
  • Gye, Myung Chan (Department of Life Science, College of Natural Sciences, Hanyang University)
  • 박찬진 (한양대학교 자연과학대학 생명과학과) ;
  • 송상하 (한양대학교 자연과학대학 생명과학과) ;
  • 김대한 (한양대학교 자연과학대학 생명과학과) ;
  • 계명찬 (한양대학교 자연과학대학 생명과학과)
  • Received : 2015.11.17
  • Accepted : 2015.12.09
  • Published : 2015.12.31
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Abstract

Pollution in the fresh water system in urban area has the adverse effect on the amphibians population. Restoration activity of amphibian in the urban stream has been growing in Korea as well as western country. For successful restoration water quality of urban stream should be sufficient for survival and normal development of amphibian. To monitor the biological safety of surface water in the Tancheon basin, the capital area of Korea, a 6-day exposure Bombina orientalis embryo developmental toxicity assay was examined. The toxicity of surface water of Tancheon mainstream were lower than those of tributaries of Tancheon. The survival rate of embryos negatively correlated with total dissolved solid, turbidity and electrical conductivity whereas the developmental abnormality and growth retardation of embryos was positively correlated with total dissolved solid, turbidity and electrical conductivity. An amphibian developmental toxicity assay would be helpful for the selection of point for construction of habitat and reintroduction of amphibian in interrupted urban stream.

도심의 인구증가에 따른 수질오염은 양서류의 개체군에 악영향을 준다. 급감하는 양서류 개체군을 보호 또는 복원하기 위해 도심하천에서 양서류 입식이 진행되고 있다. 본 연구는 탄천수계에서 양서류의 입식을 목표로 본류 및 지류의 수질의 생물학적 안전성을 검증하고자 하수처리장 유입수 및 하수처리장 배출수를 포함한 12개 지점의 표층수를 채수하여 무당개구리 포배기 배아에 처리하고 생존율, 기형발생률, 성장률 등을 분석하였다. 탄천 본류의 생물학적 안전성이 지류보다 높았으며, 상관분석 결과 무당개구리 배아의 생존율은 총용존고형물 (total dissolved solid), 탁도 (turbidity), 전기전도도 (electrical conductivity)와 음의 상관관계를 보인 반면, 기형발생율과 성장률은 양의 상관관계를 보였다. 본 연구는 양서류 입식에 앞서 양서류 배아의 발생에 미치는 수질의 생물학적 안전성을 검증한 첫 사례로서, 향후 이러한 방법이 도심하천에 대한 양서류 서식지 및 재입식지 선택에 있어 유용하리라 사료된다.

Keywords

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