小黑瓢虫与其竞争种作用系统研究:种间竞争  

Interactive system of Delphastus catalinae and its competitor:interspecies competition.

作　　者：荆英[1] 黄建[2] 马瑞燕[1] 韩巨才[1] 

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

出　　处：《应用生态学报》2004年第4期731-733,共3页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金资助项目 ( 3 0 2 70 90 4);山西省青年科学基金( 2 0 0 3 10 45 );山西省自然科学基金资助项目 ( 2 0 0 3 10 68)

摘　　要：Delphastus catalinae and Serangium japonicum are the important natural enemies of Bemisia tabaci,of which,the former is exotic,and the latter is indigenous.In this paper,the influence of interspecies competition on the population growth of D.catalinae and S.japonicum was studied under conditions of single and mixed rearing,and Lotka-Volterra equation was used to simulate the competition when more and less preys provided for the two ladybirds.The results showed that the population growth of D.catalinae was greater than that of S.japonicum when single rearing,and the population growth of S.japonicum was greater than that of D.catalinae when mixed rearing.In the competition system of the two ladybirds,S.japonicum was dominant,while D.catalinae could exist simultaneously.Delphastus catalinae and Serangium japonicum are the important natural enemies of Bemisia tabaci,of which,the former is exotic,and the latter is indigenous.In this paper,the influence of interspecies competition on the population growth of D.catalinae and S.japonicum was studied under conditions of single and mixed rearing,and Lotka-Volterra equation was used to simulate the competition when more and less preys provided for the two ladybirds.The results showed that the population growth of D.catalinae was greater than that of S.japonicum when single rearing,and the population growth of S.japonicum was greater than that of D.catalinae when mixed rearing.In the competition system of the two ladybirds,S.japonicum was dominant,while D.catalinae could exist simultaneously.

关 键 词：小黑瓢虫 种间竞争 昆虫群落 粉虱 捕食性天敌 刀角瓢虫 生物防治 

分 类 号：S476[农业科学—农业昆虫与害虫防治]