Newly Discovered Components of Dendrolimus pini Sex Pheromone

The pine-tree lappet moth, D. pini, is a harmful defoliator of pine forests in Europe and Asia and a potentially invasive species in North America. The lures for trapping D. pini males based on two known components of its sex pheromone appeared weakly attractive to male moths. Identification of all...

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Bibliographic Details
Published in:Insects (Basel, Switzerland) Switzerland), 2022-11, Vol.13 (11), p.1063
Main Authors: Rudziński, Krzysztof J., Staszek, Dorota, Asztemborska, Monika, Sukovata, Lidia, Raczko, Jerzy, Cieślak, Marek, Kolk, Andrzej, Szmigielski, Rafał
Format: Article
Language:English
Subjects:
Acetic acid
Butterflies & moths
Coniferous forests
Dendrolimus pini
Essential oils
Females
Field tests
Gas chromatography
Insect control
Insects
Introduced species
Invasive species
Laboratories
Larvae
Males
Mass spectrometry
Mass spectroscopy
Monitoring
Optimization
Pest outbreaks
Pheromones
Phyllodesma americana
Pine
Pine needles
Pine trees
pine-tree lappet moth
Retention
Scots pine
Sesquiterpenes
Sex
Sex pheromone
Solid phase methods
Trapping
wind tunnel
Wind tunnels
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Summary:The pine-tree lappet moth, D. pini, is a harmful defoliator of pine forests in Europe and Asia and a potentially invasive species in North America. The lures for trapping D. pini males based on two known components of its sex pheromone appeared weakly attractive to male moths. Identification of all components of the sex pheromone might allow for the development of more effective lures. The pheromone was sampled from virgin females using SPME and analyzed using gas chromatography coupled with mass spectrometry. Four new likely components ((Z5)-dodecenal, (Z5)-dodecen-1-ol, (Z5)-decen-1-yl acetate, (Z5)-tetradecen-1-yl acetate) and two known components ((Z5,E7)-dodecadienal, (Z5,E7)-dodecadien-1-ol) were identified based on comparison against authentic standards, Kováts indices and spectra libraries. The samples also contained several sesquiterpenes. Wind tunnel and field experiments showed that some blends of synthetic pheromone components alone or enriched with Scots pine essential oil (SPEO) were attractive to D. pini males. One component—(Z5)-decen-1-yl acetate—had a repelling effect. The presented knowledge of D. pini sex pheromone provides a basis for developing optimal lures for monitoring or controlling insect populations.
ISSN:2075-4450
2075-4450
DOI:10.3390/insects13111063