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Abstract
—Liquid chromatography with electrochemical detection was used to separate, identify and quantitate the levels of dopamine (DA) and noradrenaline (NA) present in the venoms of honey bees of known ages and of DA and 5-hydroxytryptamine (5-HT) in various species of vespid wasps. Fluorescence histochemistry corroborated the presence of amines in honey bee venom glands and reservoirs and supported the quantitative results. The results show: (i) There is an age dependent variation in DA and NA levels in honey bee venom and there may be a similar variation in DA and 5-HT in the venom of queen Dolichovespula arenaria. (ii) There appears to be a seasonal variation in the quantities of DA and NA present in honey bee venom. Such a seasonal variation may be one of the factors involved in the variation in the levels of amine components present in the various vespid wasp venom samples. (iii) 5-HT is present in much greater quantities than DA in vespid venoms. Low levels of NA and DOPA are present in vespid venoms.
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