Wang Liping, Yan Tian, Tan Zhijun, Zhou Mingjiang
Key Laboratory of Ecology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
Ying Yong Sheng Tai Xue Bao. 2003 Jul;14(7):1151-5.
The effects of Prorocentrum donghaiense and Alexandrium sp., causative species of harmful algal bloom of East China Sea in May 2002, on rotifer Brachionus plicatilis population were studied in the laboratory. The results showed that Alexandrium tamarense (ATHK) had a lethal effect on B. plicatilis and the 48hLC50 was about 1300 cell.ml-1. The toxin comparison of different fractions showed that the algal culture and re-suspended algal cells had the adverse effects, and the alga at earlier growth phases showed a stronger impact, indicating that the inhibitory effect was related with the activity of the living algal cells. P. donghaiense at high densities (4 x 10(4), 5 x 10(4) and 10 x 10(4) cell.ml-1) had an adverse effect on B. plicatilis population, while at low densities (1 x 10(4), 2 x 10(4) and 3 x 10(4) cell.ml-1), the alga could be used as food for rotifer population. When the two algae were mixed, the lethal effect of A. tamarense could be decreased by P. donghaiense. The results indicated that the above HAB event could affect the micro-zooplankton population in the occurrence area of East China Sea.
研究了2002年5月东海有害藻华的致病物种东海原甲藻和亚历山大藻对褶皱臂尾轮虫种群的影响。结果表明，塔玛亚历山大藻（ATHK）对褶皱臂尾轮虫具有致死作用，48小时半数致死浓度约为1300个细胞·毫升-1。不同组分的毒素比较表明，藻类培养液和重新悬浮的藻细胞具有不利影响，处于生长早期阶段的藻类影响更强，这表明抑制作用与活藻细胞的活性有关。高密度（4×10⁴、5×10⁴和10×10⁴个细胞·毫升-1）的东海原甲藻对褶皱臂尾轮虫种群有不利影响，而低密度（1×10⁴、2×10⁴和3×10⁴个细胞·毫升-1）时，该藻类可作为轮虫种群的食物。当两种藻类混合时，东海原甲藻可降低塔玛亚历山大藻的致死作用。结果表明，上述有害藻华事件可能会影响东海发生区域的微型浮游动物种群。
