布氏潜蝇茧蜂对橘小实蝇幼虫寄生作用的研究  

Parasitic Effect of Fopius vandenboschi on Bactrocera dorsalis

作　　者：吕增印[1] 黄居昌[1] 季清娥[1] 杨建全[1] 陈家骅[1] 

机构地区：[1]福建农林大学益虫研究室,福建福州350002

出　　处：《华东昆虫学报》2007年第3期212-215,共4页Entomological Journal of East China

基　　金：福建省科技厅重点项目(2005N009);福建省重大科技专项项目(2006NZ002)

摘　　要：在试验室条件下研究了布氏潜蝇茧蜂Fopius vandenboschi(Fullaway)的寄生习性。结果表明:该寄生蜂嗜好寄生低龄的橘小实蝇幼虫;橘小实蝇幼虫的密度对布氏潜蝇茧蜂的寄生有明显的影响;被寄生的幼虫数随寄主自身密度的增加而增加,当寄主幼虫密度达每果片30只以上时,寄生数量的增加幅度就趋于下降,用Holling圆盘方程模拟为Na=0.9051N/(1+0.0163N)。此外,布氏潜蝇茧蜂的自身密度对寄生作用也有影响,随着寄生蜂数量的增加,寄生蜂的发现域逐渐变小,用Hassell-Varley方程表示为α=0.4655P-0.5807。The parasitic effects of Fopius vandenboschi （Fttllaway） were studied in the laboratory condition. The results showed that parasitoids profcred to parasitize low-instar larvae of Bactrocera dorsalis. The density of host larvae significantly affected the paratitism of F. vandenboschi, which could be described with Holling model Na = 0. 9051N/（ 1 ＋ 0. 0163N）. The number of parasited host larvae increased with increasing number of provided host larvae, but the increasing extent was getting smaller after the host density was more than thirty. Moreover, the density ofF. vandenboschi also affected the parasitism, which could be simulated with the Hassell-Varley equationα = 0. 4655 p-0.5807. The discovery area decreased with the rising of the number of F. vandenboschi.

关 键 词：布氏潜蝇茧蜂 橘小实蝇 寄主龄期 寄生作用 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]