Suitability of Amaranthaceae and Polygonaceae species as food source for the sugar beet weevil Asproparthenis punctiventris Germar

Abstract This study explores the food plant spectrum of sugar beet weevil ( Asproparthenis punctiventris Germar; Coleoptera: Curculionidae), one most important pests Beta vulgaris subsp. Altissima group). It examines potential various weeds and other plants to maintain populations A. adults larvae outside fields. To this end, leaf consumption females males on twelve Amaranthaceae six Polygonaceae species was compared over a 24-h period in laboratory environment. Both sexes consumed greatest amount mass from spp. average about third less Atriplex spp., indicating that these have highest nutritional value for . Weevils between 30 60% retroflexus Chenopodium than they fed leaves. Like Spinacia oleracea (Amaranthaceae), family were hardly or not at all on. Mated generally more unmated, especially , i.e. with low feeding value. Experiments potted revealed heaviest 4th instar developed beet, while fewer individuals lesser weight found B. maritima hortensis Very few able develop C. album none prevent promotion pest population, special attention should be paid control growing areas.