Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Algicidal Effects of a Newly Developed Thiazolidinedione Derivative, TD49, on Dinoflagellate Akashiwo sanguinea

Thiazolidinedione 유도체(TD49) 물질을 이용한 적조생물 Akashiwo sanguinea의 제어

  • 백승호 (한국해양과학기술원 남해연구소) ;
  • 신현호 (한국해양과학기술원 남해연구소) ;
  • 장민철 (한국해양과학기술원 남해연구소) ;
  • 김시욱 (조선대학교 공과대학 응용화학소재공학과) ;
  • 손문호 (한국해양과학기술원 남해연구소) ;
  • 조훈 (조선대학교 공과대학 환경공학과) ;
  • 김영옥 (한국해양과학기술원 남해연구소)
  • Received : 2012.01.05
  • Accepted : 2012.05.09
  • Published : 2012.06.30
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Abstract

To evaluate the algicidal impact of a newly developed algicide thiazolidinedione derivative, TD49, on dinophyceae Akashiwo sanguinea in aquatic ecosystems, tentative culture experiments for the target species were conducted in small (SS), middle (MS), and large scale (LS) culture vessels. When TD49 was introduced at the final concentration of $2{\mu}M$ in SS and MS, as well as $1{\mu}M$ in LS, the abundance of A. sanguinea decreased significantly in all the treatments. On the other hand, total phytoplankton abundance, except A. sanguinea in the TD49 treatments, gradually increased with culture time, which implies that a cell destruction of A. sanguinea by TD49 is a major cause of the population growth by other phytoplankton species. Also, A. sanguinea was easily destroyed, which was likely to be a source of extracellular substances. In particular, a pH decrease was significant in the treatments than in the control, which indicates that the water in the treatments has been acidified, due to an increase in the heterotrophic metabolisms of bacteria and degradation of A. sanguinea cells. Our results indicate that the TD49 substance is the potential agents for the control of A. sanguinea in the enclosed and eutrophic water bodies.

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References

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