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Electrophysiological And Behavioral Responses Of An Ambrosia Beetle To Volatiles Of Its Nutritional Fungal Symbiont, Christopher M. Ranger, Marek Dzurenko, Jenny Barnett, Ruchika Geedi, Louela Castrillo, Matthew Ethington, Matthew Ginzel, Karla Addesso, Michael E. Reding
Electrophysiological And Behavioral Responses Of An Ambrosia Beetle To Volatiles Of Its Nutritional Fungal Symbiont, Christopher M. Ranger, Marek Dzurenko, Jenny Barnett, Ruchika Geedi, Louela Castrillo, Matthew Ethington, Matthew Ginzel, Karla Addesso, Michael E. Reding
Agricultural and Environmental Sciences Faculty Research
Ambrosia beetles (Coleoptera: Scolytinae) cultivate their fungal symbiont within host substrates as the sole source of nutrition on which the larvae and adults must feed. To investigate a possible role for semiochemicals in this interaction, we characterized electrophysiological and behavioral responses of Xylosandrus germanus to volatiles associated with its fungal symbiont Ambrosiella grosmanniae. During still-air walking bioassays, X. germanus exhibited an arrestment response to volatiles of A. grosmanniae, but not antagonistic fungi Beauveria bassiana, Metarhizium brunneum, Trichoderma harzianum, the plant pathogen Fusarium proliferatum, or malt extract agar. Solid phase microextraction-gas chromatography-mass spectrometry identified 2-ethyl-1-hexanol, …