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生态学杂志 ›› 2010, Vol. 29 ›› Issue (03): 454-459.

• 研究报告 • 上一篇    下一篇

温度对两种蓝藻种间竞争的影响

陈家长**;孟顺龙;胡庚东;瞿建宏;吴 伟;范立民;马晓燕;裘丽萍   

  1. 中国水产科学研究院淡水渔业研究中心,中国水产科学研究院内陆渔业生态环境和资源重点开放实验室,农业部长江下游渔业生态环境监测中心,江苏无锡 214081
  • 出版日期:2010-03-10 发布日期:2010-03-10

Effects of temperature on interspecific competition between two bluegreen algae.

CHEN Jia-zhang;MENG Shun-long;HU Geng-dong;QU Jian-hong;WU Wei;FAN Li-min;MA Xiao-yan;QIU Li-ping   

  1. Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries,Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences,Fishery EcoEnvironment Monitoring Center of Lower Reaches of Yangtze River, Ministry of Agriculture, Wuxi 214081, Jiangsu, China
  • Online:2010-03-10 Published:2010-03-10

摘要: 通过室内实验研究了不同温度条件下主要水华藻类——铜绿微囊藻(Microcystis aeruginisa)和巨颤藻(Oscillatoria princeps)的生长和种间竞争。结果表明:无论在纯培养体系还是混合培养体系中,微囊藻在25 ℃下生长最好,颤藻在30 ℃下生长最好;温度对藻类的种间竞争抑制参数能够产生明显影响,在20 ℃、25 ℃、30 ℃3个温度下,颤藻对微囊藻的竞争抑制参数随温度的升高而升高,30 ℃时颤藻对微囊藻的竞争抑制参数分别是20 ℃和25 ℃时的1.42倍和1.13倍,微囊藻对颤藻的竞争抑制参数则表现为25 ℃>30 ℃>20 ℃,25 ℃时微囊藻对颤藻的竞争抑制参数分别是20 ℃和30 ℃时的1.54倍和1.21倍,在20 ℃、25 ℃、30 ℃3个温度下,微囊藻对颤藻的竞争抑制参数均大于颤藻对微囊藻的竞争抑制参数,说明在各试验温度下,微囊藻对颤藻的抑制能力均大于颤藻对微囊藻的抑制能力;根据LotkaVolterra竞争模型中的两物种竞争结果可初步判断,20 ℃和25 ℃温度下,微囊藻在竞争中取胜,30 ℃下,微囊藻和颤藻可以实现不稳定共存。

关键词: 畜牧业, 可持续发展, 评价

Abstract: A laboratory experiment was conducted to study the interspecific competition between Microcystis aeruginosa and Oscillatoria princeps at 20 ℃, 25 ℃,and 30 ℃. Both in pure culture and in mixed culture, M. aeruginosa grew best at 25 ℃, while O. princeps grew best at 30 ℃. Temperature had obvious effects on the inhibition parameter of interspecific competition between the two algae. The inhibition parameter of O. princeps against M. aeruginosa at 30 ℃ was 1.42 and 1.13 times as that at 20 ℃ and 25 ℃, while the inhibition parameter of M. aeruginosa against O. princeps was the maximum at 25 ℃, being 1.54 and 1.21 times as that at 20 ℃ and 30 ℃, respectively. At 20 ℃, 25 ℃, and 30 ℃, the inhibition parameter of M. aeruginosa against O. princeps was all larger than that of O. princeps against M. aeruginosa, which meant the stronger inhibition effects of M. aeruginosa on O. princeps at the test temperatures. Based on the competition model of LotkaVolterra, M. aeruginosa won the competition at 20 ℃ and 25 ℃, and M. aeruginosa and O. princeps could unstably coexist at 30 ℃.

Key words: Livestock production, Sustainable development, Assessment