Abstract
The globemallow,Sphaeralcea emoryi Torrey, a plant native to Arizona was evaluated as a source of feeding or oviposition deterrents to the boll weevil,Anthonomus grandis Boheman. Feeding and oviposition responses of reproductive weevils to the flower buds and artificial diets spiked with dry powder or extracts of the globemallow buds were determined. Boll weevils were deterred from feeding and ovipositing in the flower buds unless the calyxes were removed. Male and virgin female weevils were discouraged from feeding as much as gravid weevils. Secondary chemicals in the flower buds served primarily as feeding deterrents but also prevented oviposition. The concentration of these chemicals was highest in the calyxes of the buds, and potent deterrent activity could be extracted from the calyxes with methanol. Boll weevils were able to perceive the deterrents by contact chemosensory organs on the antennae, maxillary palps and labial palps.
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Honda, H., Bowers, W.S. Feeding and oviposition deterrent activities of flower buds of globemallow,Sphaeralcea emoryi torrey, against boll weevil,Anthonomus grandis Boheman (Coleoptera: Curculionidae). J Chem Ecol 22, 139–150 (1996). https://doi.org/10.1007/BF02040205
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DOI: https://doi.org/10.1007/BF02040205