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Identification of the Aggregation Pheromone of the Melon Thrips, Thrips palmi

文献类型: 外文期刊

作者: Akella, Sudhakar V. S. 1 ; Kirk, William D. J. 1 ; Lu, Yao-bin 2 ; Murai, Tamotsu 3 ; Walters, Keith F. A. 4 ; Hami 1 ;

作者机构: 1.Keele Univ, Sch Life Sci, Ctr Appl Entomol & Parasitol, Keele ST5 5BG, Staffs, England

2.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, Hangzhou, Zhejiang, Peoples R China

3.Utsunomiya Univ, Fac Agr, Appl Entomol Lab, Utsunomiya, Tochigi 321, Japan

4.Food & Environm Res Agcy, York, N Yorkshire, England

期刊名称:PLOS ONE ( 影响因子:3.24; 五年影响因子:3.788 )

ISSN: 1932-6203

年卷期: 2014 年 9 卷 8 期

页码:

收录情况: SCI

摘要: The objective of this study was to identify the aggregation pheromone of the melon thrips Thrips palmi, a major pest of vegetable and ornamental plants around the world. The species causes damage both through feeding activities and as a vector of tospoviruses, and is a threat to world trade and European horticulture. Improved methods of detecting and controlling this species are needed and the identification of an aggregation pheromone will contribute to this requirement. Bioassays with a Y-tube olfactometer showed that virgin female T. palmi were attracted to the odour of live males, but not to that of live females, and that mixed-age adults of both sexes were attracted to the odour of live males, indicating the presence of a male-produced aggregation pheromone. Examination of the headspace volatiles of adult male T. palmi revealed only one compound that was not found in adult females. It was identified by comparison of its mass spectrum and chromatographic details with those of similar compounds. This compound had a structure like that of the previously identified male-produced aggregation pheromone of the western flower thrips Frankliniella occidentalis. The compound was synthesised and tested in eggplant crops infested with T. palmi in Japan. Significantly greater numbers of both males and females were attracted to traps baited with the putative aggregation pheromone compared to unbaited traps. The aggregation pheromone of T. palmi is thus identified as (R)-lavandulyl 3-methyl-3-butenoate by spectroscopic, chromatographic and behavioural analysis.

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