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Chemical ecology of the meat ant, Iridomyrmex purpureus sens. strict


Chemical ecology of the meat ant, Iridomyrmex purpureus sens. strict



Insect Biochemistry 145: 505-513



DOI: 10.1016/0020-1790(84)90004-0

Twelve volatile constituents were characterized from the common meat ant, I. purpureus 2,5-dimethyl-3-ethyl-, 2,5-dimethyl-3-propyl- and 2,5-dimethyl-3-butyl-pyrazine were mandibular gland constituents and in total represented < 1 ng/gland. The major constituents were confirmed as the known 6-methylhept-5-ene-2-one and the iridodials. The oxygenated compounds, 1,3,3,-trimethyl-2,7-dioxabicyclo[2,2,1]heptane, not previously reported from an insect source, together with 2-acetyl-3-methylcyclopentene and 6-methylhept-5-ene-2-ol were minor products. Minor iridoids were 2-(3-methylcyclopentyl)propional, a dihydroneptalactone and an iridolactone, plus actinidine. The oxygenated volatiles and iridoids were isolated both from extracts of whole insects and bodies of I. purpureus workers. The same chemical pattern was repeated in samples of I. purpureus collected over a wide area of southeastern Australia. The several series of pyrazines, iridoids, carbonyl compounds and associated volatiles, together with the previously described hydrocarbons, serve to distinguish I. purpureus chemically.

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Accession: 001171558

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