烟粉虱和温室白粉虱在相同生境下的种间竞争研究

为确定烟粉虱(Bemisia tabaci)和温室白粉虱(Trialeurodes vaporariorum)在室内自然条件下对寄主植物的选择性和种间竞争。2008年研究了2种粉虱在茄子、黄瓜、番茄、辣椒4种寄主植物上的适应性和种间竞争，茄子上烟粉虱和温室白粉虱不同起始种群数量二者间的竞争，温室白粉虱对南瓜和茄子的喜好。结果表明：4种寄主植物上，相同基数的2种试虫，烟粉虱建立种群的能力大于温室白粉虱，在茄子上表现尤为明显；在茄子上不同种群基数的竞争条件下，烟粉虱最终可将温室白粉虱取代；温室白粉虱在养虫笼小生境下对南瓜的喜好略大于茄子。表明在同一生境条件下烟粉虱较温室白粉虱有更强的种间竞争能力。

Study on the Interspecific Competition between Bemisia tabaci and Trialeurodes vaporariorum

This experiment studied on the interspecific competition between Bemisia tabaci and Trialeurodes vaporariorum and the selection of two pests to the eggplant, the cucumber, the tomato and the hot pepper in laboratory in 2008. For studying on the interspecific competition between the 2 pests, T. vaporariorum and B. tabaci were put the same number into the cage with one different host plant respectively and put two pests according to the different proportion into the cage with one eggplant. The selection of T. vaporariorum to pumpkin and eggplant was tested. The results showed that on the four kinds of host plants, the ability of building population of B. tabaci was higher than T. vaporariorum, especially on the eggplants; T. vaporariorum has been replaced by B. tabaci in no mater what propotion on eggplant; T. vaporariorum like pumpkins more than eggplants. It indicated that B. tabaci has higher competition ability than T. vaporariorum.