| 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; |
| Address: | "Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| 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, alpha-terpinene, gamma-terpinene, linalool, cis-verbenol, camphor, alpha-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, gamma-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" |
| Keywords: | "Animals Arthropod Antennae/*drug effects Behavior, Animal/drug effects Electrophysiological Phenomena Female Gas Chromatography-Mass Spectrometry Insect Repellents/analysis/*pharmacology Male Moths/*drug effects Olfactometry Photoperiod Rosmarinus/*chemis;" |
| Notes: | "MedlineZhang, Zhengqun Bian, Lei Sun, Xiaoling Luo, Zongxiu Xin, Zhaojun Luo, Fengjian Chen, Zongmao eng Research Support, Non-U.S. Gov't England 2014/03/13 Pest Manag Sci. 2015 Jan; 71(1):96-104. doi: 10.1002/ps.3771. Epub 2014 Apr 14" |
