ISSN:
1573-1561
Keywords:
Aggregation pheromone
;
attractant
;
(R * S *)-5-hydroxy-4-methyl-3-heptanone
;
(R * R *)-5-hydroxy-4-methyl-3-heptanone
;
sitophilure
;
Sitophilus oryzae
;
S. zeamais
;
S. granarius
;
Coleoptera
;
Curculionidae
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract A male-produced aggregation pheromone, common to the rice weevil,Sitophilus oryzae, and the maize weevil,S. zeamais, was isolated and identified from hexane extracts of highly absorbent paper disks exposed individually to young virgin male weevils. A combination of preparative column and gas-liquid chromatography of disk extracts yielded purified natural pheromone. When analyzed by nuclear magnetic resonance spectroscopy and gas chromatography-mass spectrometry, the structure of the natural pheromone, “sitophilure,” proved to be (R *,S *)-5-hydroxy-4-methyl-3-heptanone, of unknown enantiomeric composition. Synthetic racemic pheromone was highly attractive to males and females of both rice and maize weevils. In addition, both sexes of the granary weevil,S. granarius (L.) were attracted to the racemic preparation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01024114
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