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Sexually dimorphic neuronal circuits underlying social behaviours in Drosophila

Objective

Sex differences are basic for reproduction, parenting and other social interactions. Pheromone secretions that are differentially perceived by males and females, release stereotypical behaviours in many species. I will study how simple connectivity switches in a Drosophila sexually-dimorphic neuronal circuit are assembled into complex networks, from sensory processing to behavioural control. 11-cis-Vaccenyl-acetate (cVA) is a male-pheromone eliciting sex-specific responses: attracts females and repels males. Sex-specific wiring of olfactory neurons reroutes cVA information, forming a developmental switch in information flow. Central aSP-g neurons receive cVA innervation in females but not males, while this cluster is implicated in male-male aggressive behaviour. The role of aSP-g in social interactions was not compared between sexes, and that is my first aim. Next, I will find input and output neurons of aSP-g neurons in both sexes, by combining state-of-the-art anatomical, physiological and behavioural methodology: in-silico circuit-tracing methods to find neurons with overlapping innervations to aSP-g; and a unique electron-microscopy volume scan of a female brain to reconstruct aSP-g neurons and their synaptic partners. I will validate functional connectivity using photoactivation of output neurons while calcium-imaging target neurons. I aim to discover how sexually-specific wiring differences in homologous circuits regulate sexually-dimorphic social behaviours. These basic neuronal connectivity motifs may be conserved beyond flies.

Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2016

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Coordinator

UNITED KINGDOM RESEARCH AND INNOVATION
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 195 454,80
Address
POLARIS HOUSE NORTH STAR AVENUE
SN2 1FL Swindon
United Kingdom

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Region
South West (England) Gloucestershire, Wiltshire and Bristol/Bath area Swindon
Activity type
Research Organisations
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 195 454,80
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