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Position: Home > Articles > Predation of micro-protozoa on bacteria in Taihu Lake Chinese Journal of Applied Ecology 2007,18 (10) 2384-2388

太湖水体中微型原生动物对细菌的捕食作用

作  者:
陈默;高光;朱丽萍;冯胜
单  位:
中国科学院南京地理与湖泊研究所
关键词:
太湖;微型原生动物;捕食;稀释法
摘  要:
运用稀释法研究了太湖中不同粒径的微型原生动物对细菌的捕食压力,探讨了捕食作用对细菌生长及温度对捕食作用的影响.结果表明:太湖水体中32μm以下的微型原生动物对细菌的捕食率为5.07d-1,其中大部分捕食压力来自小于16μm的超微型原生动物,占总捕食率的90.7%;小于16μm的超微型原生动物的捕食作用明显抑制了细菌的生长;温度对捕食作用有明显影响,随着温度的升高,超微型原生动物的捕食率和细菌的生长率均明显升高.
译  名:
Predation of micro-protozoa on bacteria in Taihu Lake
作  者:
CHEN Mo1,2,GAO Guang1,ZHU Li-ping1,2,FENG Sheng1,2(1Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;2Graduate University of Chinese Academy of Sciences,Beijing 100049,China)
关键词:
Taihu Lake;micro-protozoa;predation;dilution method
摘  要:
With dilution method,this paper studied the predation of different size micro-protozoa on bacteria in Taihu Lake,and approached the effects of the predation on bacterial growth and of the water temperature on the predation.The results showed that in the water body of Taihu Lake,the predation rate of micro-protozoa with its size less than 32 μm was 5.07 d-1,and the nano-size(less than 16 μm)protozoa contributed about 90.7%.The predation of nano-protozoa reduced the abundance of bacteria significantly.With the increase of water temperature,the predation rate of nano-protozoa and the growth rate of bacteria increased obviously.

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