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Ipsenol: an aggregation pheromone forIps latidens (Leconte) (Coleoptera: Scolytidae)
D R Miller1, J H Borden, G G King
1Department of Biological Sciences, Centre for Pest Management, V5A 1S6, Canada.
Journal of Chemical Ecology
|November 22, 2013
Summary
Ipsenol, a pheromone from Ips latidens, attracts both males and females to lodgepole pine. This study identified ipsenol in beetle frass and tested its effectiveness in traps, also examining cis-verbenol
Area of Science:
- Entomology
- Chemical Ecology
- Forestry
Background:
- Ips latidens is a bark beetle that infests lodgepole pine.
- Pheromones play a crucial role in insect communication and aggregation.
Purpose of the Study:
- To identify and verify the pheromone produced by Ips latidens.
- To investigate the role of ipsenol and cis-verbenol in Ips latidens behavior.
- To determine the attractiveness of these compounds to predators.
Main Methods:
- Identification of ipsenol from the frass of male Ips latidens.
- Field trapping experiments using ipsenol and cis-verbenol lures in lodgepole pine stands.
- Observation of beetle and predator responses to pheromone-baited traps.
Main Results:
- Ipsenol was identified as a pheromone attracting both male and female Ips latidens.
- Male Ips latidens exhibited a preference for (S)-(-)-ipsenol.
- cis-Verbenol did not attract Ips latidens and inhibited attraction to ipsenol.
- Predators Enoclerus sphegeus and Thanasimus undatulus were attracted to traps baited with ipsenol and cis-verbenol.
Conclusions:
- Ipsenol is a key aggregation pheromone for Ips latidens, with a specific enantiomeric preference in males.
- cis-Verbenol acts as a repellent or inhibitor for Ips latidens.
- The study provides insights into the chemical ecology of Ips latidens and its interactions with predators.
