한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제35권5호
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  • Pages.534-541
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  • 2002
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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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미세조류, Skeletonema costatum의 성장에 미치는 유기주석 화합물들의 급성 및 만성 독성효과

The Acute and Chronic Toxicity Effects of Triorganotins on the Growth of Microalgae, Skeletonema costatum

  • Ham Kyung Hoon (Department of Biotechnology and Bioengineering, Pukyong National University) ;
  • Kim Moo Sang (Department of Biotechnology and Bioengineering, Pukyong National University) ;
  • Lee Hyung Ho (Department of Biotechnology and Bioengineering, Pukyong National University)
  • 발행 : 2002.09.01
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초록

살충제, 살균제 그리고 antifouling 약품 등으로써의 triorganotin의 사용은 지난 30년간 놀라울 정도로 증가해왔다. 이 보고에서는 미세조류 Skeletonema costatum의 성장에 미치는 여러 triorganotin (TBTO, TBTF, CTPT, TBTCI)들의 급성 및 만성 독성효과를 조사하기 위하여, 단기 및 장기 독성실험을 각각 수행하였다. 단기 독성실험에서, 여러 triorganotin들의 S. costatum에 대한 성장저해 효과는 처리농도에 비례하여 증가하였으며, 이 성장저해는 시간 경과에 따라 회복되었다. 그러나 여러 triorganotin의 독성의 성장저해 효과가 접종한 S. costatum의 세포밀도에 따라 다름을 보였다. 접종 세포농도가 높을수록 triorganotin의 독성효과는 감소하였다. 이러한 결과는 triorganotin의 S. costatum에 의한 분해에 의한 것이라고 판단된다. 장기 독성실험에서는 단기 독성실험에서와는 달리 1 $\mu$g/L의 triorganotin의 농도에서도 S. costatum이 사멸하였다. 이러한 사실은 낮은 밀도의 식물성 플랑크톤이 존재하는 해수에서 지속적으로 존재하는 triorganotin의 독성은 훨씬 더 강하게 나타날 수 있음을 보여준다.

The use of triorganotins as insecticides, bacteriocides, and antifouling agents has increased dramatically over the past 30 years, In this paper, to evaluate the acute and chronic toxicity effects of various triorganotins (TBTO, TBTE, CTPT, TBTCI) on the growth of microalgae, Skeletonema costatum, we carried out the short term and long term experiments, respectively. In the short-term experiments, the growth of S. costatum was inhibited by the various triorganotins in the dose dependent manners, but recovered by the time laps. The growth inhibition of triorganotins were decreased in the groups with higher initial cell density. These data were resulted from the dilution effect and the biodegradation of triorganotins by the microalgae. In the long-term experiments, S. costatum died completely at the 1 $\mu$g/L of TBTP and CTPT, but didn't in short-term experiments. The facts suggest that the toxicity of the chronic exposure of triorganotins should be increased in the natural sea water with low phytoplankton density.

키워드

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