赤潮藻塔玛亚历山大藻对褶皱臂尾轮虫生活史特征的影响  

Effects of red tide microalgae Alexandrium tamarense on the life history of rotifer Brachionus plicatilis.

作　　者：谢志浩[1] 肖慧[1] 蔡恒江[1] 王仁君[1] 唐学玺[1] 

机构地区：[1]中国海洋大学生态学研究室

出　　处：《应用生态学报》2007年第12期2865-2869,共5页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(30270258;40506028);山东省优秀中青年科学家科研奖励基金资助项目(03BS120).

摘　　要：采用生命表方法,研究了不同浓度塔玛亚历山大藻对褶皱臂尾轮虫生命周期中各发育阶段历时以及种群增长参数的影响.结果表明:塔玛亚历山大藻对褶皱臂尾轮虫的生长发育有明显影响,使轮虫的繁殖前期和世代时间延长,繁殖期、繁殖后期和平均寿命缩短,产卵量和繁殖率降低.轮虫的净生殖率和内禀增长率均低于对照.不同藻浓度下轮虫能够维持一定的种群增长.In this paper, life-table method was used to study the effects of different concentration Alexandrium tamarense on the durations of different development stages of Brachionus plicatilis and the characters of its on the growth and d population growth. The results showed that A. tamarense had significant effects evelopment of B. plicatilis via prolonging the durations of the rotifer＇ s pre-reproduction and generation succession, shortening the durations of its reproduction and post-reproduction and its mean lifespan, and reducing its laying eggs and fecundity. The net reproduction rate and intrinsic increasing rate of B. plicatilis decreased significantly, in comparison with those of the control. B. plicatilis could maintain definite population increase at the presence of different concentration A. tamarense.

关 键 词：塔玛亚历山大藻 褶皱臂尾轮虫 生活史 种群特征 

分 类 号：X174[环境科学与工程—环境科学]