(Awmack and Leather, 2002). Development of an integrated pest
management (IPM) strategy needs detailed information on how
host plant quality can alter the fitness, performance and behavior of
herbivores (Saeed et al., 2010). Inmany parts of China,many species
of cruciferous vegetables are often grown simultaneously in the
same area, and those vegetables are harvested at different times.
Once a crop is harvested, P. xylostella and other pests disperse to
adjacent crops or fields. Therefore, understanding the fitness and
performance of P. xylostella on different host plants will help to
predict the pest’s occurrence once it disperses to a new crop in
adjacent fields and to develop management strategies. Despite the