摘要：Lake water, which contained an abundance of zooplankton, was passed through a 0.15 μm membrane filter, and 20 ml were immediately added to 80 ml suspensions of Microcystis aeruginosa in either exponential or late stationary growth phase. In the control system, 20 ml of BG-11 medium were added. After two days, colony formation was observed in the treatment of the exponential growth phase M. aeruginosa, whereas no colonies were formed in the control. The mean number of cells per unit of M. aeruginosa increased significantly compared with that in the control (P>0.05). However, no significant difference in the growth rate was detected between the control and the treatment (P>0.05), regardless of growth phase. These results indicated that any chemicals released from zooplankton had no influence on the growth of M. aeruginosa, and the inducible colony formation in M. aeruginosa was related to physiological phase.
