异色郭公虫对柏肤小蠹捕食作用的研究  

Predation of Tillus notatus on Phloeosinus aubei

作　　者：杨燕燕[1] 李照会[1] 王如刚[1] 董宇奎[1] 

机构地区：[1]山东农业大学植保学院,山东泰安271018

出　　处：《山东农业科学》2004年第6期40-42,共3页Shandong Agricultural Sciences

摘　　要：试验研究了异色郭公虫TillusnotatusKlug成虫对柏肤小蠹PhloeosinusaubeiPerris成虫的功能反应及其寻找效应。功能反应属HollingⅡ型,圆盘方程为Na=0 4357N1+0 001372N。功能反应的参数表明,异色郭公虫成虫是捕食潜能较大的一种柏肤小蠹天敌。寻找效应分别用Hassell＆Varley的模型E=QP-m和Bedding ton的模型E=aT/〔1+btw(P-1)〕进行模拟,模拟模型分别为E=0 4221P-0 5903和E=0 39340 6359+0 3641P。两者表明,随着异色郭公虫密度的增大其捕食作用率随之降低。寻找效应与异色郭公虫密度和柏肤小蠹密度之间的关系为三维曲面,即寻找效应(E)随异色郭公虫密度(P)和猎物柏肤小蠹密度(N)的增大而下降。Laboratory studies show that the functional response of adult of Tillus notatus to adult of Phloeosinus aubei and the Mutural interference among the adults of Tillus notatus. The functional response belongs to Holling Ⅱ type and the model is .The mutural interference can be described by Hassell & Varley′s model and Beddington′s model as E=0.4221P-0.5903and,respetively. Both models demonstrate that the searching efficiency declines with the increase of Tillus notatus density. The relation of searching efficiency (E) to Tillus notatus density (P) and the prey density (N) is described by Bdddington′s model E=a/〔1+athN+btw(P-1)〕 and gives E=0.3934/(0.6359+0.001238N+0.3641P), the searching efficiency declines when the adult of Tillus notatus and prey densities increase.

关 键 词：异色郭公虫 柏肤小蠹 功能反应 寻找效应 

分 类 号：S763.38[农业科学—森林保护学]