The whitefly Bemisia tabaci (Gennadius) is a major pest of tropical, s

ubtropical and the adjacent temperate zones. In the past 20 years, the B biotype

 of this species complex has been spreading to many regions of the world with th

e assistance of human movement of ornamental plants, and in many regions of inva

sion the B biotype has quickly displaced indigenous whiteflies and caused seriou

s damage to agricultural production through direct feeding and transmission of g

eminiviruses. In the studies of invasion biology of the B biotype, we have found

 at least two major mechanisms contributing to the widespread invasion and the p

andemics of the geminiviruses it transmits: (1) the asymmetric mating interactio

ns between the B biotype and indigenous whiteflies; and (2) the indirect vector



virus mutualism between the B biotype and the geminiviruses. These findings appe

ar for the most part to reveal the behavioral and the ecological mechanisms behi

nd the successful invasion by the B biotype, and provide new insights into furth

er investigation on the mechanisms of the whitefly invasion.
Key words〓whitefly Bemisia tabaci, B biotype, asymmetric

mating interaction, vectorvirus mutualism
摘〓要〓
烟粉虱Bemisia tabaci(Gennadius)复合种是热带、亚热带及相邻温带地区的主要害虫

之一。其中的B型烟粉虱在近

20年来随观赏植物的运输在世界范围内广泛传播扩散，并在许多入侵地迅速取代本地的土著

烟粉虱，通过直接取食植物汁液、传播植物双生病毒等方式对当地的农业生产造成极大危害

。在B型烟粉虱入侵生物学研究方面，作者课题组研究发现，至少有两个主要机制导致或促

进了B型烟粉虱的广泛入侵及其所伴随的双生病毒流行：(1) 入侵烟粉虱与土著烟粉虱之间

的“非对称交配互作”；(2) 入侵烟粉虱与所传双生病毒之间的间接互惠共生关系。这些研

究结果从一定程度上揭示了B型烟粉虱成功入侵的行为和生态机制，并为进一步探讨烟粉虱

的入侵机制提供了思路。
关键词〓烟粉虱， B生物型， 非对称交配互作， 媒介昆虫-病毒互惠共