Adult suckling dating
Analysis of the headspace of uninfested and infested apple seedlings indicated qualitative differences in odour profiles.
However, feeding by caterpillars on plants can result in contrasting behaviours by conspecific adult herbivores: (1) In some plant species, volatiles induced by caterpillar feeding repel conspecific adult herbivores.These experiments showed robust attraction of LBAM to the tested volatiles.To test how general this phenomenon was we investigated attraction in other economically-important leafrollers in North America, including the obliquebanded leafroller (OBLR), Choristoneura rosaceana (Harris) and the eye-spotted bud moth (ESBM), Spilonota ocellana (Denis & Schiffermüller).For our study the initial model involved the light brown apple moth (LBAM), Epiphyas postvittana) (Walker) on apples (Malus domestica Borkh.) (Rosaceae).
This and other leafrollers are economically important pests with an exceptionally wide host range of plant species.Perhaps an increase in the emission of monoterpenes from infested plants could cause lower monoterpene concentrations in the foliage resulting in lower resistance to herbivore feeding and benefit attracted herbivores.