Dr Liu found that type B insects lived six times longer on infected plants than uninfected ones, and their population per infected plant might rise as high as 13 times that on an uninfected one.

• 虽然烟粉虱属于一个单独的种，但实际上拥有复杂的生物型，而自九十年代中期B生物型侵入中国后，迅速取代了其他危害较弱的同类，一跃成为“超级害虫”。