Abstract
Bioassays conducted with a Y-tube olfactometer provided evidence that both sexes of the cerambycid beetle Megacyllene caryae (Gahan) were attracted to odor produced by males. Odor collected from male M. caryae contained eight male-specific compounds: a 10:1 blend of (2S,3R)- and (2R,3S)-2,3-hexanediols (representing 3.2±1.3% of the total male-specific compounds), (S)-(-)-limonene (3.1±1.7%), 2-phenylethanol (8.0±2.4%), (-)-α-terpineol (10.0±2.8%), nerol (2.1±1.5%), neral (63.3±7.3%), and geranial (8.8±2.4%). Initial field bioassays determined that none of these compounds was attractive as a single component. Further field trials that used a subtractive bioassay strategy determined that both sexes were attracted to the complete blend of synthetic components, but the elimination of any one component resulted in a decline in trap captures. Blends that were missing (2S,3R)-2,3-hexanediol, (2R,3S)-2,3-hexanediol, or citral (a 1:1 mixture of neral and geranial) attracted no more beetles than did controls. A pheromone blend of this complexity, composed of alkanediols, terpenoids, and aromatic alcohols, is unprecedented for cerambycid species.
Original language | English (US) |
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Pages (from-to) | 408-417 |
Number of pages | 10 |
Journal | Journal of Chemical Ecology |
Volume | 34 |
Issue number | 3 |
DOIs | |
State | Published - Mar 1 2008 |
Keywords
- 2,3-Hexanediol
- 2-Phenylethanol
- Aggregation pheromone
- Geranial
- Limonene
- Longhorned beetle
- Neral
- Nerol
- Sex pheromone
- Wood-boring insect
- α-Terpineol
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Biochemistry