摘要
为了探讨浮游动物对富营养化的生态调控机制,促进水域生态环境改善,笔者研究了在16℃与22℃条件下,枝角类大型溞(Daphnia magna)对于蛋白核小球藻(Chlorella pyrenoidosa)的牧食能力及其在恒定光照条件下的净水能力。结果显示:相同温度条件下,随着小球藻密度的增大,大型溞的摄食速度逐渐增大,但滤水速度逐渐降低。相同藻密度下,22℃时大型溞的滤水速度与摄食速度均显著高于16℃。在所有处理中,随着小球藻培养天数的增加,大型溞的抑藻净水效果越明显。相同小球藻接种密度下,22℃条件下的净水效果要好于16℃。
In order to understand the mechanism of zooplankton ecological regulation for eutrophication and improve the natural water environment, the author studied the grazing capacity and water purification ability of Daphnia magna to Chlorella pyrenoidosa under a settled light condition in 16℃ and 22℃. The results showed that： under the same temperature, with the increase of the density of Chlorella pyrenoidosa, feeding rate of Daphnia magna was gradually increasing, but the water filtration rate decreased. For the same algae density, Daphnia magna filtrating rate and feeding rate under 22℃ were significantly higher than that under 16℃. In all treatments, with time elapsing, water purification effect of Daphnia magna was more evident. The same inoculum density of Chlorella pyrenoidosa, water purification effect was better in 22℃than that in 16℃.
出处
《中国农学通报》
CSCD
2014年第2期105-109,共5页
Chinese Agricultural Science Bulletin
基金
山东省发改委两区建设专项资金"水产学科高效生态养殖教科研实习基地建设"(621187)
关键词
大型溞
蛋白核小球藻
牧食能力
净水能力
Daphnia magna
Chlorella pyrenoidosa
grazing capacity
purification ability
