松突圆蚧寄生性天敌的种间竞争关系  

Interspecific competition between parasitoids of Hemiberlesia pitysophila

作　　者：王竹红[1] 黄建[1] 

机构地区：[1]福建农林大学生物农药与化学生物学教育部重点实验室,福建福州350002

出　　处：《福建林学院学报》2007年第4期304-307,共4页Journal of Fujian College of Forestry

基　　金：福建省科技厅重大专项前期研究资助项目(2005NZ1004);福建省青年科技人才创新资助项目(2006F3017)

摘　　要：花角蚜小蜂具有明显的种内寄生识别能力,友恩蚜小蜂则不具有,可在同一寄主体内重复产卵。采用Lotka-Volterra提出的种间竞争模型进行模拟,花角蚜小蜂和友恩蚜小蜂连续3代种群数量增长的竞争方程为:dN1/dt=2.432 2N1×(91.228 2-N1-0.021 0N2)/91.228 2;dN2/dt=1.854 6N2×(39.071 6-N2-1.965 9N1)/39.071 6。自引种定殖成功后,花角蚜小蜂成为林间控制松突圆蚧的优势种天敌。Coccobius azumai Tachikawa could distinguish the hosts parasitized by conspecific parasitoids, while Encarsla amicula Viggiani et Ren could not. En. amicula laid eggs repeatedly in the same host. Lotka-Volterra equation was used to simulate the competition between C. azumai and En. amicula, and after 3 generations, the result was dN1/dt = 2.432 2N1× （91.228 2 -N, -0. 021 0N2）/91. 228 2 ; dN2/dt = 1. 854 6 N2 × （39. 0716 - N2 - 1. 965 9N, ）/39. 071 6. C. azumai has become the domimant parasitoid since it was introduced and colonized successfully in Fujian.

关 键 词：松突圆蚧 花角蚜小蜂 友恩蚜小蜂 种间竞争 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]