钼对多刺裸腹溞的毒性  

Toxicity of molybdenum to cladoceran Moina macrocopa

作　　者：张根[1] 汪涵[1] 陈蕾[1] 蔡凌睿[1] 孙振伟[1] 郑撼[1] 温新利[1] 席贻龙[1] 

机构地区：[1]安徽师范大学生命科学学院,安徽省高校生物环境与生态安全省级重点实验室,安徽芜湖241000

出　　处：《生态学杂志》2012年第2期388-393,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(30470323);动物学省级精品课程本科生创新基金项目;安徽省高等学校省级优秀青年人才基金项目(2009SQRZ029);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资助

摘　　要：运用急性毒性和生命表实验方法,研究了钼对多刺裸腹溞(Moina macrocopa)的急性毒性和生命表统计学参数的影响。结果表明,钼对多刺裸腹溞的48hLC50值为134.46mg·L-1,95%置信区间为107.05～194.53mg·L-1;在2.0～15.0mg·L-1的浓度范围内,钼对多刺裸腹溞的生命期望、世代时间、平均寿命和净生殖率均无显著影响,但对种群内禀增长率有显著影响。空白对照组中,多刺裸腹溞的种群内禀增长率为0.0448±0.0033h-1,显著高于6.4、8.4、11.2和15.0mg·L-1钼浓度下多刺裸腹溞的种群内禀增长率(分别为0.0334±0.0007、0.0327±0.0010、0.0335±0.0003和0.0346±0.0005h-1)。与其他已测试的物种相比,多刺裸腹溞对钼具有较强的敏感性;在所研究的生命表统计学参数中,种群内禀增长率是最敏感的指标。By means of acute toxicity and life-table experiments, this paper studied the acute toxicity of molybdenum （Mo） to Moina macrocopa and the effects of Mo on the life-table demographic parameters of M. macrocopa. The 48 h LC50 of M. macrocopa for Mo was 134.46 mg·L-1, with the 95% confidence interval of 107.05-194.53 mg·L-1. At concentrations of 2.0-15.0 mg·L-1, Mo had no significant effects on the life expectancy at birth, generation time, average life span, and net reproduction rate, but affected the intrinsic rate of M. macrocopa population increase significantly. In the control, the intrinsic rate of M. macrocopa population increase was 0.0448±0.0033 h-1, which was higher than that when the M. macrocopa was exposed to 6.4, 8.4, 11.2, and 15.0 mg·L-1 of Mo （0.0334±0.0007, 0.0327±0.0010, 0.0335±0.0003, and 0.0346±0.0005 h-1, respectively）. Compared with other test organisms, M. macrocopa was more sensitive to Mo, and among all the life-table demographic parameters, the intrinsic rate of population increase was the most sensitive.

关 键 词：钼 多刺裸腹溞 急性毒性 生命表统计学 

分 类 号：X174[环境科学与工程—环境科学]