TY - JOUR
T1 - A male-produced aggregation pheromone blend consisting of alkanediols, terpenoids, and an aromatic alcohol from the cerambycid beetle Megacyllene caryae
AU - Lacey, Emerson S.
AU - Moreira, Jardel A.
AU - Millar, Jocelyn G.
AU - Hanks, Lawrence M.
N1 - Funding Information:
Acknowledgments This project was supported by funds from the Exotic/Invasive Pests and Diseases Research Program, University of California, under USDA-CSREES Grant no. 2004-34439-14691, the Alphawood Foundation, and Hatch Project no. CA-R*ENT-5181H to JGM. This research was in partial fulfillment of a Ph.D. degree for ESL from UIUC.
PY - 2008/3
Y1 - 2008/3
N2 - 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.
AB - 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.
KW - 2,3-Hexanediol
KW - 2-Phenylethanol
KW - Aggregation pheromone
KW - Geranial
KW - Limonene
KW - Longhorned beetle
KW - Neral
KW - Nerol
KW - Sex pheromone
KW - Wood-boring insect
KW - α-Terpineol
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U2 - 10.1007/s10886-008-9425-3
DO - 10.1007/s10886-008-9425-3
M3 - Article
C2 - 18253798
AN - SCOPUS:40849130099
VL - 34
SP - 408
EP - 417
JO - Journal of Chemical Ecology
JF - Journal of Chemical Ecology
SN - 0098-0331
IS - 3
ER -