蛹虫草多糖对果蝇种群期望寿命的影响  

Influence of Cordyceps militaris Polysaccharide on Expected Life of Drosophila melanogaster Population

作　　者：王菊凤[1] 李鹄鸣[2] 

机构地区：[1]吉首大学生物资源与环境科学学院,湖南吉首416000 [2]吉首大学天然药物研究中心,湖南吉首416000

出　　处：《湖南农业科学》2010年第5期133-135,139,共4页Hunan Agricultural Sciences

基　　金：国家人事部资助项目([2004]99号);湖南省自然科学基金资助项目(04JJ3057)

摘　　要：采用统计学方法,研究了蛹虫草多糖对果蝇种群期望寿命的影响。结果表明:蛹虫草多糖能显著提高果蝇种群的期望寿命。0.15%浓度组在果蝇的各个年龄阶段的生命期望值都比对照组相应的年龄阶段高出30%以上,50d年龄组高出70%多;60d年龄组则高出100%;且用各种浓度的蛹虫草多糖喂养的果蝇在老龄后生命力很强,说明蛹虫草多糖对老龄果蝇的生命有明显促进作用。The influence of Cordyceps militaris polysaccharide on expected life of Drosophila melanogaster population was studied by statistical method.The results showed that Cordyceps militaris polysaccharide can obviously lengthen the expected life of Drosophila melanogaster population.The expected life of Drosophila melanogaster population in 0.15% groups at every age stage all exceeded over 30% than that in control group,in which exceeded over 70% in the 50 d age group and exceeded 100% in 60 d age group.Moreover,the Drosophila melanogaster fed by Cordyceps militaris polysaccharide had strong vitality in the old age,which means the Cordyceps militaris polysaccharide had significant prolonging effect for old Drosophila melanogaster.

关 键 词：蛹虫草多糖 果蝇 期望寿命 

分 类 号：Q539[生物学—生物化学]