Pants that grow under heavily polluted conditions and particularly those plants which are metal accumulators or hyperaccumulators may acquire resistance to some natural enemies (Boyd. 2010). Butler and Trumble (2008). based on observations of 203 insect herbivores, indicated over 75% of an insect's fitness and their population dynamics were adversely affected by factors associated with the host plant, which primarily included the negative effects ur iieavy uiciais aucuiiiulated in piat tissues. T Lesuits in tie single-element system tub trial suggests that the larvae of Neoche- tina weevils were more sensitive to zn and Hg metal accumulation in the plant tissue than the adult weevils, whereas cu and As met- als reduced both adult and larval feeding. Goru (2007) found over two-fold larval mortality of the Cabbage aphid, Brevicoryne brassi- ae cae L feeding on cu contaminated plants at a concentration of 3.14 mgii compared to une auuts. Mogren and Tiumi e (2010) sp also showed that the feeding damage of N. bruchi decreased signif. icantly on plants with 2.32 mg Zn/kg d. wt. These results are in