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B型烟粉虱与浙江非B型烟粉虱的竞争
引用本文:臧连生,刘树生,刘银泉,阮永明,万方浩. B型烟粉虱与浙江非B型烟粉虱的竞争[J]. 生物多样性, 2005, 13(3): 181-187
作者姓名:臧连生  刘树生  刘银泉  阮永明  万方浩
作者单位:1. 浙江大学应用昆虫学研究所,杭州,310029
2. 中国农业科学院农业环境与可持续发展研究所,农业部外来入侵生物预防与控制研究中心,北京,100081
基金项目:国家重点基础研究发展规划项目(2002CB111403)
摘    要:为了了解近年来入侵中国的B型烟粉虱(Bemisiatabaci)取代本地非B型烟粉虱的潜能,在室内将一个B型与一个浙江非B型烟粉虱种群混合饲养在不同寄主植物上,跟踪观察混合种群中两个生物型个体数量相对比例的变化。结果表明,当两种生物型在棉花(Gossypiumhirsutum)上以相同初始数量共存竞争时,经过6代,非B型完全被B型替代;而在西葫芦(Cucurbitapepo)上以相同初始数量共存竞争时,只经过2代,非B型即完全被B型替代。在棉花上,即使以非B型占87%、B型占13%开始共存竞争,经过225d后,非B型也完全被B型替代。这说明B型烟粉虱具有在短期内竞争取代浙江非B型烟粉虱的能力。经分析,B型除了寄主范围比非B型的宽这一点对其竞争有利外,较强的内在竞争潜能也是其能成功入侵并替代本地非B型烟粉虱的一个重要原因。

关 键 词:烟粉虱  生物型  竞争替代  生物入侵  SCAR
收稿时间:2004-12-22
修稿时间:2004-12-22

Competition between the B biotype and a non-B biotype of the whitefly,Bemisia tabaci (Homoptera: Aleyrodidae) in Zhejiang, China
Liansheng Zang,Shusheng Liu,Yinquan Liu,Yongming Ruan,Fanghao Wan. Competition between the B biotype and a non-B biotype of the whitefly,Bemisia tabaci (Homoptera: Aleyrodidae) in Zhejiang, China[J]. Biodiversity Science, 2005, 13(3): 181-187
Authors:Liansheng Zang  Shusheng Liu  Yinquan Liu  Yongming Ruan  Fanghao Wan
Affiliation:Liansheng Zang1,Shusheng Liu1*,Yinquan Liu1,Yongming Ruan1,Fanghao Wan2 1 Institute of Applied Entomology,Zhejiang University,Hangzhou 310029 2 Centre for Management of Invasive Alien Species,Ministry of Agriculture,and Institute of Agricultural Environment and Sustainable Development,Chinese Academy of Agricultural Sciences,Beijing 100081
Abstract:In recent years the B biotype of Bemisia tabaci has been an invasive insect in China. To elucidate its potential to replace a non-B biotype of B. tabaci, native to Zhejiang, China, we reared both biotypes on various host plants in a series of laboratory experiments to observe the changes in their relative proportions. On cotton, when the two biotypes began competition in equal numbers, the non-B biotype was completely displaced by the B biotype after six generations, whereas on squash, the non-B biotype was completely dis- placed by the B biotype after only two generations. Even when the competition started with 87% of non-B biotype and 13% of B biotype in numbers, the non-B biotype was completely displaced in 225 days. The re- sults showed that the invasive B biotype has the capacity to displace the non-B biotype in a short period of time. A preliminary analysis indicates that, apart from the advantage of a wider host range of the B biotype over that of non-B biotypes, a stronger innate capacity for competition is another important factor in the suc- cessful invasion of the B biotype and its displacement of the native biotype.
Keywords:Bemisia tabaci   biotype   competitive displacement   biological invasion   SCAR
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