刀角瓢虫对烟粉虱的捕食作用  

Predation of Serangium japonicum on Bemisia tabaci

作　　者：荆英[1] 黄建[2] 韩巨才[1] 马瑞燕[1] 

机构地区：[1]山西农业大学农学院,太谷030801 [2]福建农林大学植物保护学院,福州350002

出　　处：《植物保护学报》2004年第3期225-229,共5页Journal of Plant Protection

基　　金：国家自然科学基金(30270904);山西省青年科学基金(20031045);山西省自然科学基金(20031068)

摘　　要：研究了刀角瓢虫对烟粉虱的捕食作用。结果表明:刀角瓢虫成虫对烟粉虱卵及若虫的日捕食量随粉虱虫态及虫龄的增长而减少,雌成虫的日捕食量显著大于雄成虫。刀角瓢虫雌成虫对烟粉虱卵的功能反应属 HollingⅡ型反应,回归方程式为 Na=1.016157 N/(1+0.000915 N)。温度不会影响刀角瓢虫对烟粉虱卵的功能反应形式,但可影响功能反应参数。相互干扰会降低刀角瓢虫雌成虫对烟粉虱卵的寻找效应,刀角瓢虫雌成虫对烟粉虱卵的寻找效应(E)与自身密度(P)的函数关系式为 E=0.875185P^(-1.1941)。The predation of Serangium japonicum Chapin to Bemisia tabaci(Gennadius)wasstudied and the results showed that daily consumption of eggs and nymphs of B.tabaci by the a-dults of S.japonicum was decreased with developing stages of whitefly,and the predatory a-mount by a female was higher than that by a male.The functional response of the adult femaleto eggs of B.tabaci belonged to Holling Ⅱ,and the regression equation was as Na=1.016157N/(1+0.000915 N).Temperature had no influence on the type of functional response of theadult female to eggs of B.tabaci,but influenced the parameters of functional response.Mutualinterference would decrease the searching efficiency of the adult female of S.japonicum to eggsof B.tabaci,and the regression equation of searching efficiency(E)of the adult female of S.japonicum to eggs of B.tabaci against the adult ladybird density(P)was as E=0.875185p^(-1.1941).

关 键 词：刀角瓢虫 烟粉虱 捕食作用 日捕食量 寄主植物 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]