Applied Entomology and Zoology (1998) 33, 53-57

Satoshi Noguchi, Naoki Mori, Kazuyoshi Kurosa and Yasumasa Kuwahara (1998)
Chemical ecology of astigmatid mites XLIX - ß-Acaridial (2(E)-(4-methyl-3-pentenylidene)-butanedial), the alarm pheromone of Tyrophagus longior Gervais (Acarina: Acaridae)
Applied Entomology and Zoology 33 (1), 53-57
Abstract: Alarm pheromone activity was detected in the hexane extract of Tyrophagus longior. The GLC profile of the extract revealed six components; alpha-acaridial {2(E)-(4-methyl-3-pentenyl)-butanedial}, tridecane, ß-acaridial {2(E)-(4-methyl-3-pentenylidene)-butanedial}, an unknown (M⁺; m/z 166), n-hexyl linolate and n-hexyl stearate, among which ß-acaridial was the major component, followed by tridecane. These compounds were each identified by GC/MS spectra and GLC retention times by comparing with those of authentic compounds. The active eluate from a SiO₂ column by 50% ether in hexane consisted of a peak of ß-acaridial. The compound isolated from the mite was active at 50 ng, and its activity was the same as the authentic ß-acaridial derived from T. putrescentiae.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Yasumasa Kuwahara

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.
	Tyrophagus longior