【摘要】 为探讨烟田捕食性天敌红彩真猎蝽人工饲养的可行性,组建了以烟蚜和斜纹夜蛾为食物的红彩真猎蝽实验种群特定年龄生命表和繁殖特征生命表。其中幼期累计存活率分别为0.67和0.74,完成一个世代平均时间分别需要84.61d和81.01d,种群趋势指数分别为84.61d和81.01d,净繁殖率分别为24.79和30.89d,内禀增长力分别为0.0379和0.0424,周限增值率分别为1.0386和1.0433,种群加倍时间分别为17.42d和15.19d。试验结果表明,取食烟蚜和斜纹夜蛾幼虫的红彩真猎蝽,均可以完成生活史,这两种猎物可以作为红彩真猎蝽天然人工饲料的选择。更多还原

【Abstract】 Life table characteristics of reduviid Harpactor fuscipes(Fabricius) were studied when preying on Myzus persicae(Sulzer) and Spodoptera litura(Fab.) with tobacco as host plant. Feasibility of artificial rearing of Harpactor fuscipes was evaluated. Age speci?c and fecundity specific life table were constructed. The following population parmeters were obtained: cumulative survival rate of immature( ∏ Si) on M. persicae and S. litura of 0.67 and 0.74, generation duration(T) of 84.6096d and 81.0113d, index of population trend(I) of 26.0075 and 29.6275, net reproductive rate of 24.7964 and 30.8949, innate capacity of population increase of 0.0379 and 0.0424, ?nite rate of increase of 1.0386 and 1.0433, and doubling time of 17.42d and 15.19d respectively. Results show that predator H. fuscipes develops well in aphid M. persicae or in tobacco armyworm S. litura, both are important pests in tobacco.更多还原