Pygidial gland of Azteca nr. bicolor and Azteca chartifex: Morphology and chemical identification of volatile components
d Nascimento, Ruth R. × Billen, Johan Sant'ana, Anna E.G. Morgan, E. David Harada, Ana Y. #
Plenum publ corp
Journal of chemical ecology vol:24 issue:10 pages:1629-1637
The large paired reservoirs of the pygidial gland of Azteca nr. bicolor and A. chartifex represents the largest exocrine structure in the abdomen. The glands produce a secretion with a strong smell, which the ants release when they are disturbed. Analyses of the secretions by gas chromatography-mass spectrometry (GC-MS) revealed a mixture of iridoids and ketones. A. nr. bicolor contains 2-heptanone (8%) and a mixture of three iridodial isomers, with trans-trans-iridodial as the major component (32%). A. chartifex contains 6-methyl-5-hepten-2-one (13%) and the three isomeric iridodials with cis-trans-iridodial as the principal component (32%).