Chemistry of metapleural gland secretions of three attine ants,Atta sexdens rubropilosa,Atta cephalotes,andAcromyrmex octospinosus (Hymenoptera: Formicidae) |
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| Authors: | Ruth R Do Nascimento Eric Schoeters E David Morgan Johan Billen David J Stradling |
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| Affiliation: | (1) Department of Chemistry, Keele University, ST5 5BG, Staffordshire, England;(2) Zoological Institute, University of Leuven, Naamsestraat 59, B-3000 Leuven, Belgium;(3) Department of Biology, University of Exeter, EX4 4PS Exeter, England |
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| Abstract: | The chemical composition of the secretions of the metapleural glands of workers and soldiers of twoAtta species,Atta sexdens rubropilosa andA. cephalotes, and workers ofAcromyrmex octospinosus, has been studied. As indicated by infrared spectrometry and confirmed by the ninhydrin test, the secretions contain chiefly proteins. Of the volatile acidic portion, which is present as ionized salts, phenylacetic acid is the major component in workers and soldiers ofA. s. rubropilosa andA. cephalotes. BothAtta species also contain 3-hydroxydecanoic acid and its homolog as minor components together with indoleacetic acid. While there are qualitative similarities in the acidic composition in the secretions ofA. s. rubropilosa andA. cephalotes, they differ quantitatively. The secretion ofAcromyrmex octospinosus contains 3-hydroxydecanoic and indoleacetic acids, but lacks phenylacetic acid. The bactericidal and fungicidal actions of the three major substances have been confirmed. |
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| Keywords: | Atta sexdens rubropilosa Atta cephalotes Acromyrmex octospinosus metapleural glands phenylacetic acid Formicidae |
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