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铜离子对铜绿微囊藻的急性毒性效应
引用本文:张树林,邢克智,周艳.铜离子对铜绿微囊藻的急性毒性效应[J].水产科学,2007,26(6):323-326.
作者姓名:张树林  邢克智  周艳
作者单位:天津农学院,水产科学系,天津市水产生态及养殖重点实验室,天津,300384
基金项目:天津市自然科学基金;天津市水产生态及养殖重点实验室创新项目
摘    要:以BG11为基础培养基研究了实验室条件下重金属Cu^2+在不同质量浓度下对铜绿微囊藻的急性毒性效应。试验结果表明,Cu^2+对藻类的抑制效应随Cu^2+质量浓度的增加而增加:质量浓度为0.3~1.2mg/L的Cu2^+对铜绿微囊藻生长的抑制作用不显著,且48h后出现藻细胞密度反弹现象,杀藻效果不理想。质量浓度为1.5mg/L的Cu^2+对铜绿微囊藻细胞产生很强的毒性,可有效抑制铜绿微囊藻的生长,96h时杀藻率高达97.4%,Chll_a含量抑制率达87.7%,光合放氧量明显降低,抑制率达83.3%,呼吸耗氧量明显增强。不同质量浓度Cu^2+可影响铜绿微囊藻的生长及生理活动,1.5mg/L的Cu^2+是抑制铜绿微囊藻生长的最有效质量浓度。

关 键 词:铜绿微囊藻  毒性
文章编号:1003-1111(2007)06-0323-04
修稿时间:2006-06-122007-01-18

The Acute Toxicity of Copper Ion on Alga Microcystis aeruginosa
ZHANG Shu-lin,XING Ke-zhi,ZHOU Yan.The Acute Toxicity of Copper Ion on Alga Microcystis aeruginosa[J].Fisheries Science,2007,26(6):323-326.
Authors:ZHANG Shu-lin  XING Ke-zhi  ZHOU Yan
Institution:Tianjin Fisheries Ecology and Culture Key Lab, Department of Fisheries Science, Tianjin Agriculture College, Tianjin 300384,China
Abstract:Using BG11 as base media,the toxic effects of heavy metal Cu2 on alga Microcystis aeruginosa were studied according to the change in growth,chlorophyll-a,photosynthesis release oxygen and respire exhaust oxygen of the M.aeruginosa under different Cu2 concentrations in the experiment conditions.The results showed that the inhibition on growth increased along with the improvement of the concentrations of Cu2 .When Cu2 levels ranging from 0.3 mg/L to 1.2 mg/L,it had little inhibition effects on M.aeruginosa,the density of some cultures increased again after 48h,the removing efficiency was not ideal,whereas Cu2 at higher concentrations(1.5 mg/L) poisoned the cells and displayed the inhibitory effect on the growth of M.aeruginosa.96 h after exposure the removing efficiency of alga populations was 97.4%,the chlorophyll-a inhibition efficiency was 87.7%,the photosynthesis release oxygen apparently went down,the inhibition efficiency was 83.3%,meanwhile the respire exhaust oxygen apparently enhanced.Different Cu2 concentrations could affect the alga populations and physiological activities and Cu2 (1.5 mg/L) is the most effect inhibition of M.aeruginosa.
Keywords:Cu2
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