The influence of food change on the development ofArchips podana Sc. (Lepidoptera: Tortricidae), a polyphagous insect

The influence of food change on the development of the mothArchips podana was studied. Larvae of a natural population were collected from an apple tree. Nevertheless, the minimal duration of development and the maximal weight of pupae in the next generation were observed in insects that developed on plum, pear, and currant, rather than on apple trees. Transfer has effect on larvae of late instars: transfer from the plum to other trees results in the deterioration of developmental parameters, while that from apple to plum and currant leads to their improvement. This procedure has an effect on the proportion of pupating larvae. The timing of egg laying influences the development and mortality of the larvae. The development of adults from older clutches on apple is comparable to that on plum.