Sticky traps spaced apart releasing invidiual pheromone components
Byers, J.A. 1987a. Interactions of pheromone component odor
plumes of western pine beetle. Journal of Chemical
Ecology 13:2143-2157.
Abstract--
The relationships between catch of Dendroctonus brevicomis LeC. (Coleoptera: Scolytidae)
at sources of the synergistic pheromone components, exo-brevicomin (E) and
frontalin (F), and increasing distance of separation of sources were
investigated in the forest. The two components were each released
with the host monoterpene, myrcene (M), in trap pairs. The traps of
each pair were space apart at various distances (0-16 m) in either
horizontal or vertical lines that were perpendicular to the mean wind
direction. Both sexes were most strongly attracted when the two
components were released from the same source, and increasing
distance of separation between components caused exponential
decreases in trap catch for all trap configurations. Males were
significantly more attracted to traps with E, M alone than to
corresponding traps wiht F, M alone, while females exhibited a
perference for F, M. The theoretical relationships and properties of
two coalescing plumes of individual components and their intersecting
"active space" are presented and discussed. It is proposed that
"confusion" or "communication disruption" techniques for insect
control may be more successful if components are released
individually from many points rather than released similarly in
blends.
Chemical Ecology
Sticky traps spaced apart releasing invidiual pheromone components
