Neuronal plasticity in the mushroom body calyx during adult maturation in the honeybee and possible pheromonal influences

Developmental Neurobiology
Thomas Sebastian MuenzWolfgang Rossler

Abstract

Honeybee workers express a pronounced age-dependent polyethism switching from various indoor duties to foraging outside the hive. This transition is accompanied by tremendous changes in the sensory environment that sensory systems and higher brain centers have to cope with. Foraging and age have earlier been shown to be associated with volume changes in the mushroom bodies (MBs). Using age- and task-controlled bees this study provides a detailed framework of neuronal maturation processes in the MB calyx during the course of natural behavioral maturation. We show that the MB calyx volume already increases during the first week of adult life. This process is mainly driven by broadening of the Kenyon cell dendritic branching pattern and then followed by pruning of projection neuron axonal boutons during the actual transition from indoor to outdoor duties. To further investigate the flexible regulation of division of labor and its neuronal correlates in a honeybee colony, we studied the modulation of the nurse-forager transition via a chemical communication system, the primer pheromone ethyl oleate (EO). EO is found at high concentrations on foragers in contrast to nurse bees and was shown to delay the onset of foraging. In this st...Continue Reading

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Citations

Jan 24, 2017·Trends in Ecology & Evolution·Simon KleinMathieu Lihoreau
Jun 18, 2019·Developmental Neurobiology·Sarah JaumannAdam R Smith
Jan 16, 2020·Insects·Claudia Groh, Wolfgang Rössler
Apr 10, 2019·Developmental Neurobiology·Nadine KraftClaudia Groh
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Apr 10, 2019·Proceedings. Biological Sciences·Ayse YilmazWolfgang Rössler
Dec 5, 2020·Cell and Tissue Research·Sylvia Anton, Wolfgang Rössler
Oct 11, 2020·Current Opinion in Insect Science·Sofia Bouchebti, Sara Arganda
Mar 27, 2021·Scientific Reports·Paul J HurdWolfgang Rössler

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