异色瓢虫对紫薇长斑蚜捕食及控制作用研究  

Predation and Control of Harmonia axyridis against Tinocallis kahawaluokalani

作　　者：于炜[1] 刘锦[1] YU Wei;LIU Jin(Hangzhou Botanical Garden of Zhejiang, Hangzhou 310013, China)

机构地区：[1]杭州植物园,浙江杭州310013

出　　处：《浙江林业科技》2019年第1期55-59,共5页Journal of Zhejiang Forestry Science and Technology

基　　金：杭州市科技发展计划项目(2016043B31)

摘　　要：为明确异色瓢虫Harmonia axyridis对紫薇长斑蚜Tinocallis kahawaluokalani的捕食能力,通过室内试验测定异色瓢虫成虫对紫薇长斑蚜的捕食功能。结果表明:异色瓢虫成虫对紫薇长斑蚜的捕食功能符合HollingⅡ反应模型,方程式为Na=0.987 5N/(1+0.005 43N),瞬时攻击率为0.987 5,处置时间为0.005 5 d;通过Hassell和Valley干扰模型拟合,得到捕食作用率E与猎物密度P的关系为E=0.542P^(-0.809),捕食常数为0.542,干扰系数为0.809;通过对Holling反应新模型进行拟合,方程式为Na=127.99exp(-61.55/N),最佳寻找密度为61.55头。田间试验表明释放异色瓢虫成虫能有效控制紫薇长斑蚜密度,其中瓢蚜比1:20和1:10的防治效果基本相同,而1:40的防治效果在短期内(7 d)不如1:20和1:10,但长期(28 d)防效趋于一致。从经济学和生态学的角度综合考虑。Harmonia axyridis and Tinocallis kahawaluokalani adults were trapped in Hangzhou Botanical Garden, Zhejiang province in August 2017. Experiment of predation of H. axyridis against T. kahawaluokalani was carried out in the laboratory. The results showed that the predation of H. axyridis was conformed with the model Holling-Ⅱ,with the equation of N a =0.987 5N/(1+0.005 43N). The rate of instantaneous attack was 0.987 5 and handle time was 0.005 5 day. By fitting the interfering model of Hassell and Valley, the relationship between predation rate (E) and prey density (P) was E=0.542P-0.809 with 0.542 of prey constant and 0.809 interfering parameter. By fitting the model of Holling, the equation was N a =127.99exp (-61.55/N), with the best density of 61.55. In May 2017, experiment was implemented on release of H. axyridis in Hangzhou Botanical Garden with different numbers to control T. kahawaluokalani. The results demonstrated that it had different effect with different density.

关 键 词：异色瓢虫 紫薇长斑蚜 捕食功能反应 控制 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]