除草剂草甘膦对萼花臂尾轮虫生活史特征的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (6): 1142-1145.

除草剂草甘膦对萼花臂尾轮虫生活史特征的影响

储昭霞, 席贻龙, 徐晓平, 葛雅丽, 董丽丽, 陈芳

安徽师范大学生命科学学院, 重要生物资源保护和利用安徽省重点实验室, 芜湖 241000

收稿日期:2004-03-10 修回日期:2004-07-05 出版日期:2005-06-15 发布日期:2005-06-15
通讯作者: 席贻龙
基金资助:
国家自然科学基金项目(30470323)、安徽省优秀青年基金项目(04043050)、安徽省教育厅自然科学研究基金重点项目(2003kj032zd)和安徽省重点实验室专项基金资助项目.

Effects of glyphosate on life history characteristics of freshwater rotifer Brachionus calyciflorus

CHU Zhaoxia, XI Yilong, XU Xiaoping, GE Yali, DONG Lili, CHEN Fang

Anhui Provincial Laboratory of Conservation and Utilization for Important Biological Resource, College of Life Science, Anhui Normal University, Wuhu 241000, China

Received:2004-03-10 Revised:2004-07-05 Online:2005-06-15 Published:2005-06-15

摘要/Abstract

摘要： 采用生命表实验方法研究了不同浓度(0.10、0.50、3.00、5.50、8.00和10.50mg·L^-1)的除草剂草甘膦对萼花臂尾轮虫生活史特征的影响.结果表明,草甘膦对轮虫的胚胎发育时间、幼体阶段历期、生殖期历期、平均寿命、净生殖率和种群内禀增长率均有显著影响.与对照组相比,当草甘膦浓度为3.00和8.00mg·L^-1时,轮虫胚胎发育时间显著延长;达3.00mg·L^-1时,轮虫的幼体阶段历期开始显著延长;达8.00和0.50mg·L^-1时,轮虫净生殖率和种群内禀增长率分别开始显著降低.在各参数中,种群内禀增长率是较敏感的指标,可用于监测草甘膦对萼花臂尾轮虫生活史特征的影响.

关键词: 草甘膦, 萼花臂尾轮虫, 生活史特征

Abstract: The life table study on the life history characteristics of freshwater rotifer Brachionus calyciflorus under effects of different concentrations glyphosate showed that glyphosate had significant effects on the embryonic developmental time,duration of juvenile and reproductive periods,average lifespan,net reproductive rate,and intrinsic population increasing rate of the rotifer.The embryonic developmental time was significantly lengthened when exposed to 3 and 8 mg稬^-1 glyphosate,the juvenile period began to be lengthened significantly when exposed to 3 mg稬^-1 glyphosate,while the net reproductive rate and intrinsic population increasing rate decreased significantly when the rotifer was exposed to 8.00 and 10.50 mg稬^-1 glyphosate,respectively.Among all the parameters,intrinsic population increasing rate was the most sensitive parameter which could be used in monitoring the effects of glyphosate on the life history characteristics of B.calyciflorus.

Key words: Glyphosate, Brachionus calyciflorus, Life history characteristics

中图分类号:

Q178.1

储昭霞, 席贻龙, 徐晓平, 葛雅丽, 董丽丽, 陈芳. 除草剂草甘膦对萼花臂尾轮虫生活史特征的影响[J]. 应用生态学报, 2005, 16(6): 1142-1145.

CHU Zhaoxia, XI Yilong, XU Xiaoping, GE Yali, DONG Lili, CHEN Fang . Effects of glyphosate on life history characteristics of freshwater rotifer Brachionus calyciflorus[J]. Chinese Journal of Applied Ecology, 2005, 16(6): 1142-1145.

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