Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (1996) 69, 109-110

H. Niemeyer and G. Watzek (1996)
Test von Monoterpenen als Zusatz zu Pheroprax® bzw. Chalcoprax® in Pheromonfallen zum Fang des Buchdruckers, Ips typographus L. bzw. des Kupferstechers, Pitygenes chalcographus L. (Col., Scolytidae)
[Experiments on monoterpenes in combination with Pheroprax® and Chalcoprax® in pheromone traps for catching the bark beetles Ips typographus L. and Pityogenes chalcographus L. (Col., Scolytidae)]
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 69 (5), 109-110
Abstract: It is highly evident that monoterpenes of the host tree serve as olfactory stimulants for "pioneer-beetles" colonizing first a tree before any bark-beetle-produced aggregation pheromones can lure those beetles to the host. The findings of REDDEMANN (1993) about a significant increase of spruce engraver catches by addition of both (-)-alpha-pinen and (+)-limonen simultaneously to pheroprax-baited bark beetle traps (Pheroprax® being the aggregation pheromone of Ips typographus) induced us to conduct field experiments testing the same host volatiles incomparable bark beetle traps baited with either Pheroprax® or Chalcoprax® (aggregation pheromone of Pityogenes chalcographus). Despite we used methods considering the influence of place and time on the bark beetle flight activities, in 3 experiments with 30 repetitions in total no monoterpene-induced enhancement of typographus-catches could be found; the same was true with P. chalcographus (2 experiments, 18 repetitions in total). With respect to the important role of host volatiles also from a practical point of view, it is strongly recommended to repeat experiments like these under different conditions to reveal the reasons of the different findings.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Link to article at publishers website

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.
	Ips typographus	Spruce (Picea)
	Pityogenes chalcographus	Spruce (Picea)