Our goals were to 1) isolate, and culture two fungal morphotypes, 2) characterize the volatile emissions from grain inoculated by each fungal morphotype (Aspergillus flavus or Fusarium spp.) compared to uninoculated and sanitized grain, and 3) understand how MVOCs from each morphotype affects mobility, attraction, and preference by L. serricorne. Headspace collection revealed that the Fusarium- and A. flavus-inoculated grain produced significantly different volatiles compared to sanitized grain or the positive control. Changes in MVOC emissions affected close-range foraging during an Ethovision assay, with a greater frequency of entering and spending time in a small zone with kernels inoculated with A. flavus compared to other treatments. In the release-recapture assay, MVOCs were found to be attractive to L. serricorne at a longer distances in commercial pitfall traps. While there was no preference shown among semiochemical stimuli in a still-air, four-way olfactometer, it is possible that methodological limitations prevented robust interpretation from this assay. Overall, our study suggests that MVOCs are important for close- and long-range orientation of L.serricorne during foraging, and that MVOCs may have the potential for inclusion in behaviorally-based tactics for this species.
OwnerUnited States Department of Agriculture - view all
Update frequencyunknown
Last updated10 months ago
OverviewColeopteraIPMInsectsMVOCsNP304behavioral ecologyentomologymicrobesmobilityolfactionstored productstrappingvolatile responses
Additional Information
KeyValue
dcat_modified2023-10-03
dcat_publisher_nameAgricultural Research Service
guidbaef58bd-c84f-46ee-b050-14494f213431
language
harvest_object_idbffcf303-39a2-400a-a8e6-58704b27bba0
harvest_source_id2c0b1e04-ba48-4488-9de5-0dab41f9913f
harvest_source_titleUSDA Open Data Catalog