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[Edited_by_A._Ciancio,_C.N.R.,_Bari,_Italy_and_K.(Bookos.org)

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IPM THROUGH ENTOMOPARASITES<br />

109<br />

Therefore, if EPNs are important weevil larva predators, relatively small<br />

reductions in the rate at which EPNs prey on weevils could have a<br />

disproportionately large effect on increasing the weevil survival rate <strong>and</strong>, hence, the<br />

numbers of egg-laying adults in an orchard. Duncan et al. (2003, 2007) found that<br />

caged weevil larvae buried in orchards on the central ridge are killed, primarily <strong>by</strong><br />

endemic EPNs, at an average rate of 53% per week (range 38–82%) compared to<br />

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