Differential responses to aldehyde pheromone blends in two bed bug species (Heteroptera: Cimicidae)
2021
Déry, Mark | Lee, Chow-Yang | Choe, Dong-Hwan
The behavioral responses of two bed bug species, Cimex lectularius L. and C. hemipterus (F.), to conspecific or heterospecific nymphal aldehyde blends were examined using a two-choice olfactometer. Volatile cues from exuviae or a synthetic blend containing (E)-2-hexenal, 4-oxo-(E)-2-hexenal, (E)-2-octenal, and 4-oxo-(E)-2-octenal were tested. In both species, the adults settled preferentially on the olfactometer treatment side when conspecific volatile aldehyde cues were provided. When tested with heterospecific volatile aldehyde cues, only adult C. lectularius preferentially responded to C. hemipterus volatile cues. Adult C. hemipterus was indifferent to the aldehyde blend of C. lectularius. Potential implications of the finding on bed bug biology and practical pest management are discussed.
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