小黑瓢虫与其竞争种作用系统研究: 种间竞争

编号 zgly0000335219

文献类型 期刊论文

文献题名 小黑瓢虫与其竞争种作用系统研究: 种间竞争

作者 荆英  黄建  马瑞燕  韩巨才 

作者单位 山西农业大学农学院 

母体文献 应用生态学报 

年卷期 2004,15(4)

页码 731-733

年份 2004 

分类号 S476.2  Q968.1 

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 

文摘内容 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。