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Year

2014

Title

​Resolution of three cryptic agricultural pests (Ceratitis fasciventris, C. anonae, C. rosa, Diptera: Tephritidae) using cuticular hydrocarbon profiling

Source

​Bulletin of Entomological Research, Page 1 of 8

doi:10.1017/S0007485314000406

Abstract

​Discrimination of particular specieswithin the species complexes of tephritid fruit flies is a very challenging task. In this fruit-fly family, several complexes of cryptic species have been reported, including the African cryptic species complex (FAR complex). Cuticular hydrocarbons (CHCs) appear to be an excellent tool for chemotaxonomical discrimination of these cryptic species. In the present study, CHC profiles have been used to discriminate among three important agricultural pests from the FAR complex, Ceratitis fasciventris, Ceratitis anonae and Ceratitis rosa.  Hexane body surface extracts of mature males and females were analyzed by two-dimensional gas chromatography with mass spectrometric detection and differences in CHC profiles between species and sexes tested through multivariate
statistics and compared with species identification by means of microsatellite markers. Quantitative as well as qualitative CHC profile differences between sexes and species are reported. The CHC profiles consisted of a mixture of linear, internally methyl-branched and mono-, di- and tri- unsaturated alkanes. Twelve compounds were pinpointed as potential chemotaxonomical markers. The present study shows that presence or absence of particular CHCs might be used in the chemical diagnosis of the FAR complex. Moreover, our results represent an important first step in the development of a useful chemotaxonomic tool for cryptic species identification of these important agricultural pests.

Authors

Vanícková  ​L. , Virgilio  M., Tomcala  A., Brízová  R., Ekesi
S., Hoskovec  M., Kalinová  B., Do Nascimento  R. R., and De Meyer M.

Keywords

​cryptic species complex, genus Ceratitis, cuticular hydrocarbons, polymorphic microsatellite loci, chemotaxonomy

Interest Groups

TWD; TEAM; TWWH; TAAO

Attachments

Created at 10/06/2014 17:20 by Abdeljelil Bakri
Last modified at 10/06/2014 18:20 by Abdeljelil Bakri