一套寄生蜂和寄主相互关系实验模型的建立

通过显微手术建立一套研究寄生蜂和寄主关系的实验模型，以寄主体重为指标，用该模型研究了来自寄生蜂的活性物质（多态ＤＮＡ病毒（ＰＤＶ），蜂毒，畸形细胞）和幼蜂本身对寄主生长发育的影响．结果表明，ＰＤＶ和蜂毒能够延迟寄主的生长，使之体色变淡，不能化蛹，但不足以模拟寄生现象；两者加上畸形细胞，可以显著抑制寄主的生长发育，使寄主表现出同被寄生一样的发育模式，最终因不能化蛹而衰竭死亡．这一结果说明，该模型能够有效地用于寄生蜂和寄主关系的研究中

A MODEL SYSTEM FOR STUDYING THE RELATIONSHIP BETWEEN PARASITOID AND ITS HOST

A model system for the relationship between parasitoid and its host was established by microoperation to study the effects of polydnavirus and venom from female parasitoid, teratocytes from parasitoid larva and the larva itself on the growth of the host. The results showed that polydnavirus plus venom could not simulate the phenomena of parasitism although they arrested the host development which exhibited host integument decoloration and inability of pupation. However, polydnavirus and venom plus teratocytes could simulate the developmental patterns of parasitized host. The development of the host was inhibited significantly. The model system is an effective method for studying the relationship between parasitoid and its host.