应用生态学报2012，Vol.23Issue(10)：2855-2862,8.
铜和镉对多刺裸腹溞的联合毒性效应
Combined toxicity of copper and cadmium to cladoceran Moina marocopa
摘要
Abstract
In this paper, the 48 h LC50 values of Cu2+, Cd2+ and Cu2++Cd2+(Cu2+:Cd2+ = l :1) to Moina macrocopa were determined by acute toxicity tests, and the effects of different concentrations of Cu2+ , Cd2+ and Cu2++Cd2+ on the life table demography of M. macrocopa were studied by life table demography. The 48 h LC50 of Cu2+, Cd2+ and Cu2++Cd2+ to M. macrocopa was 0.106, 0. 117 and 0.212 mg · L-1, respectively, and the acute toxicity of Cu2++Cd2+ mixture to M. macrocopa showed an antagonistic effect. Cu2+ had no significant effects on the life expectancy at hatching, gross reproductive rate, net reproductive rate, generation time, and intrinsic rate of population increase of M. macrocopa, whereas Cd2+ and Cu2+ +Cd + had significant effects on the life expectancy at hatching, gross reproductive rate, net reproductive rate and generation time, but no significant effects on the intrinsic rate of population increase of M. macrocopa. Compared with the control, the 0.004 and 0.005 mg · L-1 of Cd2+ and the 0.006-0.010 mg · L-1 of Cu2++Cd2+ decreased the life expectancy at hatching and the gross reproductive rate of M. macrocopa significantly, and the 0. 004 and 0.005 mg · L-1 of Cd2+ and the 0.008-0.010 mg · L-1 of Cu2++Cd2+reduced the net reproductive rate and the generation time of M. macrocopa significantly. The chronic toxicity of Cu2++Cd2+ mixture to M. macrocopa showed a synergistic effect. There existed significant dose-effect relationships between the concentrations of Cd2+ and Cu2+ +Cd2+ and the life expectancy at hatching, gross reproductive rate, net reproductive rate, and generation time of M. macrocopa.关键词
铜/镉/联合毒性/48 h半致死浓度/多刺裸腹潘/生命表统计学参数Key words
Cu2+ / Cd2+ / combined toxicity/ 48 h LC50/ Moina marocopa/ life table demography分类
生物科学引用本文复制引用
沈鹏,席贻龙,张烨,周彬,王敏..铜和镉对多刺裸腹溞的联合毒性效应[J].应用生态学报,2012,23(10):2855-2862,8.基金项目
国家自然科学基金项目(30470323)、教育部科学技术研究重点基金项目(051286)、安徽省优秀青年基金项目(08040106904)、安徽省教育厅自然科研基金重点项目(2003kj032zd)和重要生物资源的保护和利用研究安徽省重点实验室专项基金项目资助. （30470323）
