Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Eco-friendly Control of Harmful Algal Bloom Species Using Biological Predators

포식성 천적생물을 이용한 친환경 유해조류 제어기술 개발

  • Kim, Sok (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Lee, Changsu (Department of Bioprocess Engineering, Chonbuk National University) ;
  • Vo, Thi-Thao (Department of Bioactive Material Sciences, Chonbuk National University) ;
  • Han, Sang-Il (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Choi, Yoon-E (Division of Environmental Science & Ecological Engineering, Korea University)
  • 김석 (고려대학교 환경생태공학부) ;
  • 이창수 (전북대학교 생물공정공학과) ;
  • 보티타오 (전북대학교 생리활성소재과학과) ;
  • 한상일 (고려대학교 환경생태공학부) ;
  • 최윤이 (고려대학교 환경생태공학부)
  • Received : 2016.05.03
  • Accepted : 2016.06.22
  • Published : 2016.06.30
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Abstract

This study presents the potentiality of harmful algal bloom (HAB) control through the zooplankton, Daphnia magna. In case of co-cultivated D. magna with cyanobacteriums (Microcystis aeruginosa, Anabaena variabilis, and Limnothrix planctonica), the D. magna showed the $80.2{\pm}4.2%$, $39.7{\pm}4.0%$, and $25.9{\pm}10.9%$ of control efficiency for M. aeruginosa, A. variabilis and L. planctonica, respectively. Furthermore, algal control was investigated by using supernatant including metabolite/secretion of D. magna. The algal control efficiencies of supernatant were recorded as $24.9{\pm}9.9%$ and $8.9{\pm}4.0%$ for M. aeruginosa and A. variabilis, respectively. From the results of present study, it may be possible to provide a feasible way for development of eco-friendly HAB control methods.

본 연구에서는 동물플랑크톤인 Daphnia magna를 이용하여 유해조류인 Microcystis aeruginosa, Anabaena variabilis, Limnothrix planctonica에 대한 제어 가능성을 평가하였다. D. magna와 유해조류를 공생배양 시킨 경우, M. aeruginosa ($80.2{\pm}4.2%$), A. variabilis ($39.7{\pm}4.0%$) 그리고 L. planctonica ($25.9{\pm}10.9%$)의 순으로 조류 발생 억제효율을 보였다. 동물플랑크톤의 섭생에 의한 조류 제어 효과 이외에 D. magna의 대사/분비물질의 조류 제어 가능성을 확인할 수 있었다. D. magna를 배양한 배지를 유해조류 제어에 이용했을 때, M. aeruginosa와 A. variabilis에 대하여 각각 $24.9{\pm}9.9%$와 $8.9{\pm}4.0%$의 성장 억제효과를 확인할 수 있었다. 하지만, L. planctonica에 대한 성장 억제효과는 나타나지 않았다. 본 연구의 결과를 통하여 동물플랑크톤인 D. magna를 활용한 친환경적 유해조류 제어기술 개발이 가능할 것으로 판단된다.

Keywords

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