Journal of Chemical Ecology (1996) 22, 191-206

Peter Witzgall, Marie Bengtsson, Gerhard Karg, Anna Carin Bäckman, Ludvik Streinz, Philipp A. Kirsch, Zoltan Blum and Jan Löfqvist (1996)
Behavioral observations and measurements of aerial pheromone in a mating disruption trial against pea moth Cydia nigricana F. (Lepidoptera, Tortricidae)
Journal of Chemical Ecology 22 (2), 191-206
Abstract: Synthetic sex pheromone of the pea moth Cydia nigricana. (E,E)-8,10-dodecadien-1-yl acetate (E8,E10-12 : Ac), was applied in a 3-ha pea field at a rate of 17 g/ha, in two different dispenser formulations. Aerial concentrations within pea canopy, as determined by a field electroantennogram (EAG) apparatus, were 2 and 3 ng/m³ in the two dispenser treatments. The validity of the EAG measurements was corroborated by sampling of field air, followed by gas chromatographic quantification of E8,E10-12 : Ac. Males were attracted to fresh dispensers releasing E8,E10-12 : Ac plus less than 2% of the antagonistic E, Z; Z, E; and Z, Z isomers. Two days after placement, the proportion of these isomers had increased to 6%. Males were then no longer attracted to the dispensers, but were observed to fly out of the treated field. Male attraction to calling females was almost entirely suppressed, and attraction to traps baited with synthetic pheromone was significantly reduced. Larval infestation in the pheromone-treated field was 2%, compared to 36% in a control field.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Peter Witzgall

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

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cydia nigricana