The enantiomeric composition of monoterpene hydrocarbons in the defensive secretions ofNasutitermes termites (Isoptera): Inter- and intraspecific variations |
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Authors: | Irena Valterová Jan Vrkoč Tobjörn Norin |
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Affiliation: | (1) Institute of Organic Chemistry and Biochemistry, Academy of the Czech Republic, CZ-166 10 Praha 6, Czech Republic;(2) Department of Organic Chemistry, Royal Institute of Technology, S-100 44 Stockholm, Sweden |
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Abstract: | Summary Frontal gland secretions of termite soldiers of the speciesNasutitermes costalis, N. ephratae, N. nigriceps, N. rippertii, andN. hubbardii were analyzed. The chiral compositions of the monoterpene hydrocarbons were investigated by means of two-dimensional gas chromatography. Two of them, 3-carene and-pinene were present in the form of (–)-enantiomers of high purity in the majority of the samples. The other monoterpenes,-pinene, camphene, sabinene, limonene, and-phellandrene, exhibited a great variation in the enantiopurity between different species.-Pinene and limonene varied significantly even between different colonies within the species.N. costalis was the only species with an invariable composition of the secretion, independent of the locality or origin. |
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Keywords: | alarm pheromones frontal gland secretions enantiomeric composition two-dimensional gas chromatography Isoptera Termitidae Nasutitermes |
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