Location: Sunflower and Plant Biology ResearchTitle: Fatty acid composition and crop survey data indicate sources of red sunflower seed weevil infestations and have implications for IPM and IRM
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/21/2019
Publication Date: 10/2/2019
Citation: Prasifka, J.R., Anderson, J.V. 2019. Fatty acid composition and crop survey data indicate sources of red sunflower seed weevil infestations and have implications for IPM and IRM [abstract]. Entomological Society of America. 0590.
Technical Abstract: In recent years the red sunflower seed weevil has become the most serious pest of sunflowers in the primary U.S. growing area (North and South Dakota). Fatty acid compositions differ among wild sunflowers and market classes of cultivated sunflower (i.e., oilseeds and confection). Because the pest is univoltine and larvae develop entirely within a sunflower achene, the fatty acid composition of adult seed weevils in one year reflects the food source of larvae in the previous year. Combined with field survey data, the fatty acid compositions of adult weevil populations show current deficiencies in pest management, provide context to claims of insecticide resistance, and may help predict the potential durability of conventional host plant resistance.