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1 June 2009 Response of Cranberry Weevil (Coleoptera: Curculionidae) to Host Plant Volatiles
Zsofia Szendrei, Edi Malo, Lukasz Stelinski, Cesar Rodriguez-Saona
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The oligophagous cranberry weevil, Anthonomus musculus Say, causes economic losses to blueberry growers in New Jersey because females deposit eggs into developing flower buds and subsequent larval feeding damages buds, which fail to produce fruit. A cost-effective and reliable method is needed for monitoring this pest to correctly time insecticide applications. We studied the behavioral and antennal responses of adult A. musculus to its host plant volatiles to determine their potential for monitoring this pest. We evaluated A. musculus response to intact and damaged host plant parts, such as buds and flowers in Y-tube bioassays. We also collected and identified host plant volatiles from blueberry buds and open flowers and performed electroantennograms with identified compounds to determine the specific chemicals eliciting antennal responses. Male weevils were more attracted to blueberry flower buds and were repelled by conspecific-damaged buds compared with clean air. In contrast, females were more attracted to open flowers compared with flower buds. Nineteen volatiles were identified from blueberry buds; 10 of these were also emitted from blueberry flowers. Four of the volatiles emitted from both blueberry buds and flowers [hexanol, (Z)-S-hexenyl acetate, hexyl acetate, and (Z)-3-hexenyl butyrate] elicited strong antennal responses from A. musculus. Future laboratory and field testing of the identified compounds in combination with various trap designs is planned to develop a reliable monitoring trap for A. musculus.

© 2009 Entomological Society of America
Zsofia Szendrei, Edi Malo, Lukasz Stelinski, and Cesar Rodriguez-Saona "Response of Cranberry Weevil (Coleoptera: Curculionidae) to Host Plant Volatiles," Environmental Entomology 38(3), 861-869, (1 June 2009).
Received: 29 September 2008; Accepted: 1 February 2009; Published: 1 June 2009

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