Abstract
The ability to discriminate among nestmates and non-nestmate is essential to defend social insect colonies from intruders. Over the years, nestmate recognition has been extensively studied in the honeybee Apis mellifera; nevertheless, the quantitative perceptual aspects at the basis of the recognition system represent an unexplored subject in this species. To test the existence of a cuticular hydrocarbons’ quantitative perception threshold for nestmate recognition cues, we conducted behavioural assays by presenting different amounts of a foreign forager’s chemical profile to honeybees at the entrance of their colonies. We found an increase in the explorative and aggressive responses as the amount of cues increased based on a threshold mechanism, highlighting the importance of the quantitative perceptual features for the recognition processes in A. mellifera.
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Acknowledgments
We thank Dr. Duccio Pradella for his help in the field. The financial support was provided by the project PRIN 2008 (prot. 2008KZ82RE).
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Communicated by: Sven Thatje
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Cappa, F., Bruschini, C., Cipollini, M. et al. Sensing the intruder: a quantitative threshold for recognition cues perception in honeybees. Naturwissenschaften 101, 149–152 (2014). https://doi.org/10.1007/s00114-013-1135-1
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DOI: https://doi.org/10.1007/s00114-013-1135-1