刺桐姬小蜂虫瘿密度与刺桐受害肿大程度关系  

Relationship between the gall density of erythrina gall wasp and swelling degree of infested parts of Erythrina variegata var. orientalis

作　　者：邓晓韶[1] 李其章 曾玲[1] 梁广文[1] 梁治宇 陆永跃[1] 

机构地区：[1]华南农业大学昆虫生态研究室,广东广州510642 [2]深圳市城市绿化管理处,广东深圳518028

出　　处：《中国森林病虫》2009年第2期15-17,共3页Forest Pest and Disease

基　　金：国家林业局林业科学技术研究项目(2006-45);深圳市城市管理局科研项目"深圳市刺桐姬小蜂综合防治研究"

摘　　要：采用采样测定的方法,研究了金脉刺桐Erythrina variegata var. orientalis(L.)Merr.上刺桐姬小蜂Quadrastichus erythrinae Kim虫瘿密度与受害部位肿大程度的关系。结果表明:刺桐姬小蜂危害后刺桐受害部位明显肿大,叶柄、枝条断面面积可增大到5～9倍;刺桐不同受害部位的肿大程度与虫瘿密度之间存在明确关系,建立了描述叶片上虫瘿总体积或枝条、叶柄肿大面积与虫瘿密度之间关系的幂方程;随着虫瘿密度增大,单个虫瘿对器官肿大程度的贡献越来越小,两者间关系也可用幂方程描述。The study was made with sampling and determination methods. The result showed the infested parts of Erythrina variegata var. orientalis swelled obviously and the cross section area of petioles and new branches was 5-9 times larger. The relationships between the gall density of erythrina gall wasp and swelling degree of the infested parts were definite and the power equation describing the relationship between the swelling area of petioles and new branches or total volume of galls in leaves and gall density was constructed. The contribution of single gall to the swelling went down with the increase of the gall density and their relationships could be described with power equation, too.

关 键 词：刺桐姬小蜂 虫瘿 密度 肿大程度 

分 类 号：Q968.1[生物学—昆虫学]