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HERO ID
4311202
Reference Type
Journal Article
Title
Electrophysiological and behavioural responses of the tea geometrid Ectropis obliqua (Lepidoptera: Geometridae) to volatiles from a non-host plant, rosemary, Rosmarinus officinalis (Lamiaceae)
Author(s)
Zhang, Z; Bian, L; Sun, X; Luo, Z; Xin, Z; Luo, F; Chen, Z
Year
2015
Is Peer Reviewed?
1
Journal
Pest Management Science
ISSN:
1526-498X
EISSN:
1526-4998
Volume
71
Issue
1
Page Numbers
96-104
Language
English
PMID
24616107
DOI
10.1002/ps.3771
Web of Science Id
WOS:000346034600013
Abstract
BACKGROUND:
A plant-based 'push-pull' strategy for Ectropis obliqua (Prout) (Lepidoptera: Geometridae) is being developed using semiochemicals in the volatiles of Rosmarinus officinalis (Lamiaceae). The aim of this study was to identify and quantify the bioactive components within R. officinalis by gas chromatography-electroantennographic detection (GC-EAD) and gas chromatography-mass spectrometry (GC-MS), and to test the antennal and behavioural responses of E. obliqua to these chemicals. The emission dynamics of bioactive chemicals was also monitored.
RESULTS:
GC-EAD experiments indicated that E. obliqua antennae responded to the following volatile compounds from R. officinalis: myrcene, α-terpinene, γ-terpinene, linalool, cis-verbenol, camphor, α-terpineol and verbenone, which were the minor constituents. Based on the dose-dependent antennal and behavioural responses of E. obliqua to these bioactive compounds, myrcene, γ-terpinene, linalool, cis-verbenol, camphor and verbenone were found to play a key role in repelling the moths, and the mixture that included all eight compounds was significantly more effective. The maximum emissions of these semiochemicals occurred at nightfall.
CONCLUSIONS:
The specifically bioactive compounds in R. officinalis volatiles are responsible for repelling E. obliqua adults. Results indicate that R. officinalis should be considered as a potential behaviour-modifying stimulus for 'push' components when developing 'push-pull' strategies for control of E. obliqua using semiochemicals.
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