ChemInform Abstract: Selective Syntheses of (S)-1-Methylbutyl E-2,4-Dimethyl-2-pentenoate, an Aggregation Pheromone Component of Rhyzopertha dominica, and of E-2- Butyl-2-octenal, an Alarm Pheromone Component of Oecophylla longinoda, via 2-Substituted 1-S

ChemInform ◽  
2010 ◽  
Vol 23 (30) ◽  
pp. no-no
Author(s):  
R. ROSSI ◽  
A. CARPITA ◽  
T. MESSERI
Keyword(s):  
Aggregation Pheromone ◽  
Alarm Pheromone ◽  
Pheromone Component ◽  
Rhyzopertha Dominica ◽  
Oecophylla Longinoda ◽  
Substituted 1

Response of Dryocoetes confusus and D. autographus (Coleoptera: Scolytidae) to enantiospecific pheromone baits

2004 ◽  
Vol 136 (3) ◽  
pp. 419-425 ◽  
Author(s):  
N.L. Jeans Williams ◽  
J.H. Borden
Keyword(s):  
Bark Beetle ◽  
Aggregation Pheromone ◽  
Bark Beetles ◽  
Field Studies ◽  
Pheromone Component ◽  
Male And Female ◽  
Dryocoetes Confusus

AbstractIn past field studies, the greatest response of western balsam bark beetles, Dryocoetes confusus Swaine, to traps was obtained with blends of (+)-exo-brevicomin and (+)- or (±)-endo-brevicomin, which imitate the natural male-produced aggregation pheromone. We conducted a trapping experiment comparing low-release enanti ospecific blends (9:1 (+)-exo-brevicomin:(+)-endo-brevicomin or 9:2 (+)-exo-brevicomin:(±)-endo-brevicomin released at 0.3, 0.1, or 0.03 mg per day) with the standard commercial (±)-exo-brevicomin bait released at 1.2 mg per day. Multiple-funnel traps baited with the experimental blends caught more D. confusus than the unbaited traps, but only traps with the 9:2 (+):(±) blend released at 0.3 and 0.03 mg per day caught significantly more male and female beetles than those baited with the standard bait. Thus, trap sensitivity can be improved with the addition of (±)-endo-brevicomin. The sympatric bark beetle D. autographus Ratzeburg was captured in significant numbers in traps baited with (±)-exo-brevicomin. A subsequent trapping experiment showed that D. autographus responded to (+)- or (±)-exo-brevicomin, but not to (−)-exo-brevicomin, suggesting that (+)-exo-brevicomin is the principal aggregation pheromone component in this species.

scholarly journals Differences in Orientation Behavior and Female Attraction by Rhyzopertha dominica (Coleoptera: Bostrichidae) in a Homogeneous Resource Patch

2019 ◽  
Vol 48 (4) ◽  
pp. 784-791 ◽  
Author(s):  
Erick M G Cordeiro ◽  
James F Campbell ◽  
Thomas Phillips
Keyword(s):  
Aggregation Pheromone ◽  
Rhyzopertha Dominica ◽  
Movement Direction ◽  
Random Pattern ◽  
Upward Movement ◽  
Monitoring And Control ◽  
Male And Female ◽  
Wheat Kernel ◽  
Movement Orientation ◽  
And Control

Abstract The objectives of the study are to understand how naïve beetles disperse after emerging as an adult in a homogeneous resource patch. We compared the movement of adult male and female Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae) using a laboratory and a field-collected strain during the first 2 d after their emergence from the wheat kernel in which they developed. We first asked if naïve male and female beetles show any innate orientation pattern. Males showed an upward orientation bias during the first day, but not in the second, whereas females had a random pattern of orientation in both days of evaluation. No significant differences were observed between the two strains. Given that males release an aggregation pheromone, we next asked if the upward movement of males improved their ability to be found by a naïve female. The presence of a male, whether above or below a newly emerged female, changed the females’ movement direction from random to bias towards the male. In contrast, free-walking males exhibited the same upward movement bias on the first day regardless of the position of the caged male. Only on the second day did male movement change to the opposite direction of the caged male. Here, we report differences between males and females’ movement orientation strategies and their response to males producing aggregation pheromone within the grain mass. Our data may improve our understanding of pheromone attraction and help us to develop better monitoring and control tools.

ChemInform Abstract: A ROUTE FROM D-GALACTOSE TO THE AGGREGATION PHEROMONE COMPONENT (-)-α-MULTISTRIATIN

1983 ◽  
Vol 14 (18) ◽  
Author(s):  
A. LAGRANGE ◽  
A. OLESKER ◽  
S. S. COSTA ◽  
G. LUKACS ◽  
T. T. THANG
Keyword(s):  
Aggregation Pheromone ◽  
Pheromone Component
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