C. Mcnair et al., Toward pheromone-based mating disruption of Enarmonia formosana (Lepidoptera : Tortricidae) on ornamental cherry trees, CAN ENTOMOL, 131(1), 1999, pp. 97-105
The potential for pheromone-mediated mating disruption of the cherry bark t
ortrix (CBT), Enarmonia formosana (Scopoli), was evaluated by attaching PVC
tube dispensers to the trunks of mature (>40 cm diameter at breast height)
ornamental cherry trees, Prunus cvs., Lining suburban streets of New Westm
inster and Vancouver, British Columbia. Dispensers released either a blend
of (E)-9-dodecenyl acetate (E9-12:OAc, 49.5%), (Z)-9-dodecenyl acetate (Z9-
12:OAc, 49.5%), and (2)-7-decenyl acetate (Z7-10:OAc, 1%) at a rate of 29 m
g/day (Exp. 1), or E9-12:OAc alone at 27 mg/day (Exp. 2), 4 mg/day (Exp. 3)
, or 0.5 mg/day (Exp. 4). A sticky Delta trap baited with a grey rubber sep
tum impregnated with CBT pheromone components E9-12:OAc (40 mu g), Z9-12:AO
c (60 mu g), and Z7-10:OAc (1 mu g) was placed in each tree. Captures of ma
le CBTs in treatment trees were significantly reduced compared with control
trees in all experiments. Results suggest that disruption of pheromone-bas
ed communication in CBT around individual cherry trees is feasible with a p
heromone blend or with E9-12:OAc alone, and could become part of an integra
ted management strategy for CBT in urban environments.