Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 60, Issue 29, Pages 7168-7176Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf301474d
Keywords
Ceratitis capitata; male sex pheromone; two-dimensional gas chromatography with time-of-flight mass spectrometric detection; gas chromatography with electroantennographic detection; principal component analysis
Funding
- Academy of Sciences of the Czech Republic [61388963]
- International Agency for Atomic Energy, United Nations, Vienna [16106]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [471352/2008-0, 306627/2008-6]
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The medfly (Ceratitis capitata) is one of the major agricultural pests controlled through sterile insect technique (SIT) programs We studied the chemical composition of the volatiles released by calling males from one laboratory and two wild C. capitata populations using two-dimensional gas chromatography with time mass spectrometric detection (GC X GC/TOFMS) and gas chromatography with electroantennographic detection (GC-EAD). Multivariate data analyses revealed significant differences in the quantitative and qualitative composition of male chemical emanations between the three populations. The GC-EAD analyses of the male emanation of three C capitata populations revealed 14 antenally active compounds. The volatiles isomenthone, beta-pinene, ethyl octanoate, indole, geraniol, bornyl acetate, geranyl acetone, and (E)-caryophyllene are newly reported EAD active constituents of the male pheromone. GC EM) analyses of the laboratory population indicated that the males and females of C capitata possess comparable sensitivity to male produced volatiles. Our results are relevant to the development of a pheromone based monitoring system and also to the SIT control program.
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