UV-B辐射增强对壶状臂尾轮虫种群增殖的影响  

Effects of UV-B radiation on population growth of rotifer Brachionus urceus

作　　者：王进河[1,2] 冯蕾[3] 唐学玺[1] 

机构地区：[1]中国海洋大学生命学院,山东青岛266003 [2]东营市海洋与渔业局,山东东营257091 [3]东营职业学院农业工程系,山东东营257091

出　　处：《海洋环境科学》2009年第4期345-348,354,共5页Marine Environmental Science

基　　金：国家自然科学基金资助项目(30270258;40506028);山东省优秀中青年科学家科研奖励基金项目(03BS120);中国博士后科学基金项目(2005037237);东营职业学院博士科研基金(BJ0602)

摘　　要：运用群体累计培养的方法研究了UV-B辐射增强对壶状臂尾轮虫(Brachionus urceus)种群增殖的影响。结果表明:UV-B辐射增强对壶状臂尾轮虫的种群数量、雌体抱卵率和种群增殖率都有显著影响(P<0.05)。实验表明,在本实验辐射强度(20μW/cm2)和剂量范围内(0.24、0.48、0.72、0.96和1.20kJ/m2),壶状臂尾轮虫的种群数量和种群增殖率均以对照组最高,各UV-B辐射处理组则随UV-B辐射剂量的增大而呈一致性减小,说明该种群的种群数量和种群增殖率随UV-B辐射的增强显示一致性的影响,两者都可以作为大气UV-B辐射强弱的生物指标。The effects of UV-B radiation on population growth of rotifer Brachionus urceus were studied using the method of population accumulative culture. The results showed that the population numbers, the percentage of egg-bearing females relative to the total number of females and population growth rate of rotifer Brachionus urceus were significantly affected by UV-B radiation （ P 〈 0.05 ）. At the experimental intensity of 20μW/cm2and in the dose range studied （0.00, 0.24, 0.48, 0.72, 0.96 and 1.20kJ/m2 ） , both the population number and growth rate was the highest in the control and decreased with the increment of UV-B radiation. In addition, the population number and growth rate of rotifer Brachionus urceus showed a similar tendency of decrease with the dose increase of UV-B radiation. Both of them could be used as an ideal biomarker for the enhancement of UV-B radiation.

关 键 词：UV-B辐射 壶状臂尾轮虫 种群数量 雌体携卵率 种群增殖率 

分 类 号：Q958[生物学—动物学] X17[环境科学与工程—环境科学]