噻唑烷二酮衍生物TD49对围隔有害甲藻海洋赤潮藻环状异帽藻的溶藻活性.pdf

J Appl Phycol (2013) 25:1555– 1565 DOI 10.1007/s10811-012-9953-7 Algicidal activity of the thiazolidinedione derivative TD49 against the harmful dinoflagellate Heterocapsa circularisquama in a mesocosm enclosure Seung Ho Baek Moonho Son Si Woo Bae Kyoungsoon Shin Dong Hee Na Hoon Cho Mineo Yamaguchi Young Ok Kim Si Wouk Kim Received: 12 October 2012 /Revised and accepted: 22 November 2012 /Published online: 9 December 2012 # Springer Science+Business Media Dordrecht 2012 Abstract To assess the algicidal effects of the thiazolidine- decrease in planktonic organisms, including H . circularis- dione derivative TD49 on the unarmored dinoflagellate quama, following TD49 treatment was correlated with Heterocapsa circularisquama and to evaluate the response abrupt declines in culture pH and dissolved oxygen concen- of the planktonic community and the environment to this tration. Following addition of TD49, there was a significant chemical, we undertook mesocosm (1,300 L) and small- increase in the abundance of diatoms and cryptophyta spe- scale experiments. The reduction ratio for H . circularis- cies, and after 8 days, the dominant species in the TD49 quama in each experiment was dependent on the concentra- treatments shifted to small pennate diatoms including tion of TD49. At a TD49 concentration 0.4 μM, the Cylindrotheca and Entomoneis species. The growth of some abundance of H . circularisquama decreased by 99 % in species among the zooplankton community was promoted at the small-scale experiment and by 84 % in the mesocosm low TD49 concentrations (≤0.4 μM), whereas high concen- during the initial 2 days. At 0.2 μM TD49, the abundance of trations (≥ 1.0 μM) had a negative effect. This study dem- H . circularisquama decreased by up to