Journal of Applied Entomology (2003) 127, 185-188

Q.-H. Zhang, R. Jakus, F. Schlyter and G. Birgersson (2003)
Can Ips typographus (L.) (Col., Scolytidae) smell the carrion odours of the dead beetles in pheromone traps? Electrophysiological analysis
Journal of Applied Entomology 127 (4), 185-188
Abstract: Head-space samples of Ips typographus dead beetles taken from pheromone traps were tested by combined gas chromatography and electroantennographic detection (GC-EAD) on the antennae of the same species, and identified by GC-mass spectroscopy (MS). The GC-EAD analysis showed that antennae of both sexes responded to 1-hexanol and verbenone from the aeration samples, while the typical and strong carrion odours from the dead beetles such as dimethyl disulphide, 3-methyl-1-butenol (isoamyl alcohol), 2,5-dimethyl pyrazine and isovaleric acid elicited no antennal responses. The EAD active compounds, 1-hexanol and verbenone, have been shown in earlier studies to be inhibitory on attraction of I. typographus to pheromone traps. Thus, the decreased catching efficacy of pheromone traps with many dead beetles might be the result of the release of 1-hexanol and verbenone from the dead beetles, but not to the typical carrion smells which are strongly detected by the human nose.
(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): Qing He Zhang, Fredrik Schlyter

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