Characterisation of the chemical profiles of Brazilian and Andean morphotypes belonging to the Anastrepha
fraterculus complex (Diptera,Tephritidae) |
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| Authors: | Lucie Vaní?ková Radka B?ízová Antonio Pompeiano Luana Lima Ferreira Nathaly Costa de Aquino Raphael de Farias Tavares Laura D. Rodriguez Adriana de Lima Mendon?a Nelson Augusto Canal Ruth Rufino do Nascimento |
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| Abstract: | Fruit fly sexual behaviour is directly influenced by chemical and non-chemical cues that play important roles in reproductive isolation. The chemical profiles of pheromones and cuticular hydrocarbons (CHs) of eight fruit fly populations of the Andean, Brazilian-1 and Brazilian-3 morphotypes of the Anastrephafraterculus cryptic species complex originating from Colombia (four populations) and Brazil (four populations) were analysed using two-dimensional gas chromatography with mass spectrometric detection. The resulting chemical diversity data were studied using principal component analyses. Andean morphotypes could be discriminated from the Brazilian-1 and Brazilian-3 morphotypes by means of male-borne pheromones and/or male and female CH profiles. The Brazilian-1 and Brazilian-3 morphotypes were found to be monophyletic. The use of chemical profiles as species- and sex-specific signatures for cryptic species separations is discussed. |
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| Keywords: | Cryptic species, chemotaxonomy, GC× GC/MS, PCA |
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