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Updated: Aug 8, 2025
07:59
Using a Comparative Species Approach to Investigate the Neurobiology of Paternal Responses
Published on: September 19, 2011
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Extended parental provisioning and variation in vertebrate brain sizes
Carel P van Schaik1,2,3, Zitan Song1, Caroline Schuppli4
1Department of Ecology of Animal Societies, Max Planck Institute for Animal Behavior, Konstanz, Germany.
Plos Biology
|February 28, 2023
Summary
Large brains offer advantages but demand high energy. Extended parental care evolved alongside brain size, enabling young to survive and develop larger brains, solving an evolutionary paradox.
Area of Science:
- Evolutionary biology
- Comparative physiology
- Neuroscience
Background:
- Large brains provide cognitive benefits but have high energetic costs.
- Brain development is prolonged, with full functionality achieved post-growth.
- Young endotherms often cannot independently support brain development.
Purpose of the Study:
- To investigate the evolutionary relationship between brain size and parental provisioning.
- To resolve the paradox of high brain energy demands in young animals.
- To understand the constraints on brain size evolution.
Main Methods:
- Comparative analysis of brain size and parental provisioning strategies across endotherm species.
- Examination of developmental timelines and energetic requirements for brain growth.
- Correlation studies between extended parental care and immature survival rates.
Main Results:
- Extended parental provisioning coevolved with increased brain size in endotherms.
- Parental investment significantly improves immature survival rates.
- The energetic costs of brain development are a key factor limiting brain size evolution.
Conclusions:
- Extended parental provisioning is a crucial factor enabling the evolution of larger brains.
- Sustaining the high energetic costs of brain development is a primary constraint on brain size.
- Parental investment strategies play a significant role in shaping cognitive evolution.
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