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Evolution of the social brain: How social complexity affects individual cognition in ants

Objective

This project aims to answer a significant open question in evolutionary neurobiology: how social complexity shapes the brain structure, its associated metabolic costs, and the behavioural capability of individual members of a society. The Social Brain Hypothesis proposes that the complexity of living in group influences encephalization in vertebrates, but this theory has not been critically tested in invertebrate species. Social insects such as ants have miniaturized brains that nevertheless support highly coordinated collective behaviour and striking individual cognitive abilities. This collective behaviour produces an “externalized” distributed processing of information that may reduce energetic expenses in individual brains.

We propose to address this question through the study of brain metabolic costs of ant foragers under different conditions of sociality. We will examine the effect of distributed information processing (such as the use of pheromones trails to coordinate group activity) on individual cognitive abilities (such as learning) and the energetic costs of specialized brain compartments that underlie behaviour. Our interdisciplinary methodology will combine techniques applied to the study of collective animal behaviour (individual tracking in collective choice and foraging experiments) and neurobiology (immunohistochemistry and neuroanatomical scaling, cytochrome oxidase staining and learning assays) in sister clades of ants that show strong differences in social complexity and thus the relative roles of individual workers and cooperative groups. This novel and integrated approach will allow us to analyze the evolutionary relationship between social complexity and brain evolution.

Fields of science (EuroSciVoc)

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Keywords

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Programme(s)

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Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

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

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) H2020-MSCA-IF-2014

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Coordinator

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
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.

€ 246 668,40
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.

€ 246 668,40

Partners (1)

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