青翅蚁形隐翅虫对稻纵卷叶螟和白背飞虱的捕食作用  

Predation abilities of Paederus fuscipes on Cnaphalocrocis medinalis or Sogatella furcifera

作　　者：沈斌斌[1] 徐宇斌[2] 邹一平[3] 

机构地区：[1]华南农业大学资源环境学院昆虫学系,广东广州510642 [2]江西农业大学园林与艺术学院,江西南昌330045 [3]江西宜春学院,江西宜春336000

出　　处：《华东昆虫学报》2005年第4期320-324,共5页Entomological Journal of East China

基　　金：华南农业大学博士启动基金资助项目(k05047)

摘　　要：应用二次回归正交设计建立青翅蚁形隐翅虫对稻纵卷叶螟和白背飞虱捕食作用的数学模型分别为:Yc′m=3.5072+1.6671x1+1.7200x2-1.004x3+0.6375x1x2-0.7625x1x3-0.2625x2x3+0.6020x21-0.3538x22-0.0807x23;Ys′f=3.7612+0.4015x1+0.2573x2+1.6645x3+0.1250x1x3+x2x3+0.3372x21-0.4820x22+0.0641x23。结果表明,青翅蚁形隐翅虫对白背飞虱表现出更强的取食选择性。当猎物密度较低时,青翅蚁形隐翅虫对稻纵卷叶螟的捕食作用为密度制约性,当猎物密度较高时,青翅隐翅虫对白背飞虱的捕食作用为密度制约性。Mathematical models of predation of Paederusfuscipes on Cnaphalocrocis medinalis and Sogatella furcifera established with quadratic regressive orthogonal designation were： Y＇cm=3.5072＋1.6671x1＋1.7200x2-1.004x3＋0.6375x1x2-0.7625x1x3-0.2625x2x3＋0.6020x^21-0.3538x^22-0.0807x^23;Y＇sf=3.7612＋0.4015x1＋0.2573x2＋1.6645x3＋0.1250x1x3＋x2x3＋0.3372x^21-0.4820x^22＋0.0641x^23. respectively. The results showed that P.fuscipes preferred S.furcifera than C. medinalis. When the density of C. medinalis or S.furcifera was low, the predation of P. fuscipes on C. medinalis belonged to density dependence type, but when the density was high, that of P.fuscipes on S.furcifera belonged to density dependence type.

关 键 词：青翅蚁形隐翅虫 稻纵卷叶螟 白背飞虱 二次回归正交设计 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治] S435.112[农业科学—植物保护]