“…Thus, controlling B. tabaci populations with insecticides is currently the main method used to prevent the spread of TYLCV. However, continuous field application of insecticides is not always feasible because of the deposition of pesticide residues on crops during the harvest season, harmful effects on beneficial insects, and the development of insecticide-resistant populations, such as the Mediterranean (formerly Q-biotype) of B. tabaci (Fern andez et al, 2009;Koyama et al, 2008;Roditakis et al, 2009;Tokumaru and Hayashida, 2010). In addition, the effective application of insecticides may be difficult because nymphal stages prefer to settle on the undersides of the host leaves (Simmons, 1994).…”