Bemisia tabaci biotype Q in China (Shandong) orginated from the western Mediterrenean regions. B. tabaci biotype Q was introduced into Shandong province of China in 2006 and has since displaced the previous well-established population of biotype B in the whole province. The populations of B. tabaci biotype Q in the field have a rapid genetic turnover. These findings will be helpful to the management of whitefly populations in the field.

This present study aimed at invasion process, cataleptic mechanism and monitoring basis of Bemisia tabaci biotype Q species. The main content are as follows: (1) The introduction of Bemisia tabaci biotype Q species into China was discovered for the first time. The fixed-point monitoring for 10 years indicated the invasion, formation, expansion and eruption process of BBemisia tabaci biotype Q species in China. (2) The rapid genetic evolution and the basis of ecological adaptability were emphasized from the level of individual/group. The ecological elements and mechanism influencing competitive advantage translocation of the biotype B/Q species were analyzed from the level of the relationship among the species. The synergistic and interactional effect between the biotype Q species and biological factor were also analyzed from the level of the community/system. (3) The quick and new technology to detect and monitor biotype Q species and the damages and variation of population were established, significant damages controlling methods using insecticide agent and RNA interference were also studied.