METHOD: Feeding Behavior CONDITIONS: Field METHOD NARR: Plants were grown in the field where data was collected on # of adults, egg clutches, instar and % defoliation. Laboratory tests were also done to observe feeding behaviording and contact) on the different accessions. Choice tests, larval development, adult foliage consumption, survival and oviposition were also conducted in the laboratory. RESULTS NARR: Population density of all developme on wild species than tbr. The average number of adults tnded to be higher on tar than opl or oka. Adults and larvae spent more time feeding on tbr than wild species and oka had the lowest feeding frequency. Resting and walkis was greater on wild species. Adults walked more but resting was similar on wild vs tbr. Conact was reduced on wild accessions. Larval development varied among the species used. Wild foliage was consumed much less than tbr. AUTHO affected adults and larvae differently. This effect is based primarily on an antifeedant or deterrent effect that mainly affects the adults and reduces egg laying. It is unlikely that glycoalkaloids play an important roes studied and their presence does not explain the different modes of resistance exhibited.