Learning context modulates aversive taste strength in honey bees

The Journal of Experimental Biology
Maria Gabriela de Brito SanchezMartin Giurfa

Abstract

The capacity of honey bees (Apis mellifera) to detect bitter substances is controversial because they ingest without reluctance different kinds of bitter solutions in the laboratory, whereas free-flying bees avoid them in visual discrimination tasks. Here, we asked whether the gustatory perception of bees changes with the behavioral context so that tastes that are less effective as negative reinforcements in a given context become more effective in a different context. We trained bees to discriminate an odorant paired with 1 mol l(-1) sucrose solution from another odorant paired with either distilled water, 3 mol l(-1) NaCl or 60 mmol l(-1) quinine. Training was either Pavlovian [olfactory conditioning of the proboscis extension reflex (PER) in harnessed bees], or mainly operant (olfactory conditioning of free-walking bees in a Y-maze). PER-trained and maze-trained bees were subsequently tested both in their original context and in the alternative context. Whereas PER-trained bees transferred their choice to the Y-maze situation, Y-maze-trained bees did not respond with a PER to odors when subsequently harnessed. In both conditioning protocols, NaCl and distilled water were the strongest and the weakest aversive reinforcement, ...Continue Reading

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Citations

Aug 19, 2015·Frontiers in Behavioral Neuroscience·Constance BoitardMartin Giurfa
Nov 4, 2017·The Journal of Experimental Biology·Lucie DesmedtPatrizia d'Ettorre
Jan 24, 2018·Scientific Reports·Marie GuiraudMaría Gabriela de Brito Sanchez
May 26, 2018·The Journal of Experimental Biology·João Marcelo Robazzi Bignelli Valente AguiarMartin Giurfa
Dec 19, 2019·Frontiers in Physiology·Camille HostachyMatthieu Dacher
Jul 31, 2018·Frontiers in Behavioral Neuroscience·Alexis BuatoisMartin Giurfa
Oct 12, 2017·Scientific Reports·Alexis BuatoisMartin Giurfa
May 3, 2021·The European Journal of Neuroscience·Louise BesteaMaria Gabriela de Brito Sanchez

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