Entomologia Experimentalis et Applicata (2016) 160, 209-218

Johan Jakobsson, Glenn P. Svensson, Christer Löfstedt and Olle Anderbrant (2016)
Antennal and behavioural responses of the spruce seed moth, Cydia strobilella, to floral volatiles of Norway spruce, Picea abies, and temporal variation in emission of active compounds
Entomologia Experimentalis et Applicata 160 (3), 209-218
Abstract: We investigated whether spruce seed moth, Cydia strobilella L. (Lepidoptera: Tortricidae, Grapholitini), one of the most damaging seed predators on Norway spruce, Picea abies (L.) H. Karst (Pinaceae), uses olfactory cues during host search. Analyses with coupled gas chromatography and electroantennography revealed that antennae of both sexes of moths responded consistently to three compounds in the headspace from female spruce flowers, i.e., α-pinene, β-pinene, and myrcene, but not to limonene as has been previously reported for this species. The amounts of these active volatiles released from flowers and cones of P. abies were quantified, and their diurnal and seasonal variation was monitored. The total release of the active volatiles correlated well with the diurnal and seasonal flight activity of C. strobilella as revealed by catches of males in pheromone-baited traps. In field trapping experiments, where baits were loaded with proportions and enantiomeric ratios of α-pinene, β-pinene, and myrcene matching those of the female P. abies floral headspace, substantial catches of male C. strobilella were achieved, whereas few females were captured. These surprising results suggest that male C. strobilella make use of host volatiles to aid them in their search for females.
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Link to article at publishers website
Database assignments for author(s): Johan Jakobsson, Olle Anderbrant, Glenn P. Svensson

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cydia strobilella	Spruce (Picea)