Aggregation pheromone of the agave weevil Scyphophorus acupunctatus
The agave weevil, Scyphophorus acupunctatus Gyllenhal (Coleoptera: Curculionidae), is the most important insect pest of wild and cultivated agaves in the world. Combined gas chromatographyelectroantennography (GC-EAD) analysis of male volatile extracts showed that four peaks elicited antennal responses from males and females. The peaks were identified by GC-mass spectrometry (GC-MS) as 2-methyl-4-heptanol (1), 2-methyl-4-octanol (2), 2-methyl-4-heptanone (3), and 2-methyl-4-octanone (4). Electroantennogram (EAG) recordings of both sexes to 0.01-, 0.1-, 1-, and 10- μ g stimulus load of synthetic compounds showed that the dose of the tested compounds and weevil sex significantly influenced the antennal response of S. acupunctatus . However, there was no sexual dimorphism in the antennal responses to the four synthetic compounds evaluated because the EAG profiles revealed no interaction between doses by sex.
| Main Authors: | , , , , , , |
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| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | Agave tequilana, Picudo del agave, Feromonas sexuales, Electroantenografía, Control de plagas, |
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