Abstract
The aim of this study was to investigate the effect of ZnSO$_4$ on the function of contact chemosensitive and olfactory sensilla of the worker honeybee antennae. The effect of ZnSO$_4$ on contact chemosensitive sensilla was tested behaviorally using the proboscis extension response and that on olfactory sensilla using electroantennogram recordings. We showed that antennal ZnSO$_4$-treatment significantly reduced the sugar-elicited proboscis extension response but did not reduce olfactory evoked electroantennogram responses. Both results indicate that ZnSO$_4$ selectively blocks contact-chemosensory and not olfactory perception. We suggest that ZnSO$_4$ ablation will be a powerful tool to investigate the role of contact chemosensory and olfactory sensilla in short range communication within the honeybee colony.
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