Effect of Microcystis aeruginosa (Cyanobacteria) abundance on the growth and ingestion of Poterioochromonas sp. (Chrysophyceae)
Poterioochromonas sp., isolated from the mass culture of Microcystis, was a mixotrophic flagellate. It could grow not only in inorganic medium, but also by ingestion and digestion of Microcystis. In this study, the growth and ingestion characteristics of Poterioochromonas sp. was investigated with modified Monod model and Michaelis-Menten model, respectively. The results showed that, the relationship between flagellate growth rate (initial concentration 105 cells·mL-1) and prey density (Microcystis aeruginosa FACHB469, *106 cells·mL-1) was denoted by the fomula: Growth rate (μ, h-1)=0.054*(x+1.46)/(4.24 +x+1.46) (r2=0.919). And the model for ingestion rate was expressed by the equation: Ingestion rate (I, cells·flag.-1 h-1)=3.3*x/ (3.76 + x) (r2=0.946).
growth rate ingestion rate Poterioochromonas sp. Microcystis aeruginosa
Shengjuan GUO Nanqin GAN Lingling ZHENG Lirong SONG
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology Chinese Acad State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology Chinese Acad
国际会议
上海
英文
3383-3385
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）