Abstract
SummaryPheromones secreted by the mandibular glands and the sting apparatus of Apis mellifera adansonii workers of known ages were analysed quantitatively. Production of both pheromones was found to vary with age. Isopentyl acetate in the sting apparatus reached a peak approximately 20 days after emergence. The amount of 2-heptanone produced by the mandibular glands was small for the first 14 days after emergence, but increased continuously after this age.
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