人工饲料pH值对桃蚜存活、繁殖及抗氧化酶活性的影响  

Effects of diets pH value on survival,fecundity and antioxidant enzyme activities of green peach aphid,Myzus persicae

作　　者：高文兴[1] 陈红印[1] 张礼生[1] 

机构地区：[1]中国农业科学院植物保护研究所生物防治农业部重点开放实验室,北京100081

出　　处：《应用昆虫学报》2011年第3期605-610,共6页Chinese Journal of Applied Entomology

基　　金：公益性行业(农业)科研专项(200803032);国家科技支撑计划项目(2006BAD08A02);中国-美国生物防治国际合作项目

摘　　要：通过测定在不同pH值饲料上桃蚜Myzus persicae(Sulzer)的存活率、繁殖率及其抗氧化酶活性的变化,评价饲料pH值对桃蚜生态和生理指标的影响,筛选扩繁桃蚜饲料最适pH值。结果显示:不同pH值人工饲料饲喂桃蚜,其存活率3d后即呈现显著差异,在试验调查时间内,饲料pH值为7.0处理的存活率、单雌产蚜量和内禀增长率均为最高;不同处理桃蚜体内的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性与对照处理相比均存在显著性差异,在24h左右达到最大值,而后有所下降;饲料pH值为7.0和7.2两处理的酶活性变化幅度较小,在48h后接近正常水平。试验结果表明,扩繁桃蚜较适合的人工饲料pH值为7.0左右。The effect of dietary pH on eco-physiological indices of the green peach aphid Myzus persicae （Sulzer） were investigated and the optimal pH value for artificial diets for this insect was determined.Significant differences in survival rates were observed in aphids fed diets of different pH after 3 days.The highest survival rate was recorded in aphids fed a diet with a pH of 7.0.SOD and CAT activity significantly increased in all treatments compared to the control.The antioxidant enzyme activity of aphids fed diets with pH 7.0 and 7.2 changed little,and recovered to near normal levels after 48 h.The most suitable pH for an artificial diet for the green peach aphid is 7.0.

关 键 词：桃蚜 人工饲料 PH值 SOD CAT 

分 类 号：S433[农业科学—农业昆虫与害虫防治]