"In the vinegar fly #Drosophila, flies chronically exposed to a high concentration of a monomolecular odor exhibit reduced behavioral aversion to the familiar odor when it is re-encountered. This change in olfactory behavior has been attributed to selective decreases in the sensitivity of second-order olfactory projection neurons (PNs) in the antennal lobe that respond to the overrepresented odor. However, since odorant compounds do not occur at similarly high concentrations in natural sources, the role of odor experience-dependent plasticity in natural environments is unclear."
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Corresponding results in the honeybee:
"Morphofunctional experience-dependent plasticity in the honeybee brain"
http://learnmem.cshlp.org/content/24/12/622
