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Impact of Individuals on Individuals

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Related Experiment Video

Updated: Feb 9, 2026

Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

Published on: October 13, 2019

Spatial self-organization resolves conflicts between individuality and collective migration.

X Fu^1,2, S Kato^1,3, J Long^1,4

¹Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, 06520, USA.

Nature Communications

|June 7, 2018

Summary

This summary is machine-generated.

Individual bacteria with varying abilities can still move together in groups. Cells spontaneously sort themselves to manage differences, allowing populations to maintain diversity while migrating collectively.

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Last Updated: Feb 9, 2026

Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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Area of Science:

Microbiology
Collective behavior
Biophysics

Background:

Collective behavior emerges from simple individual rules.
Individual variation within populations poses challenges for coordinated group movement.
Mechanisms balancing individuality and collective action are not well understood.

Purpose of the Study:

To quantify individual variation in chemotaxis within a migrating bacterial population.
To understand how individual differences are managed during collective migration.
To elucidate the role of self-generated attractant gradients in collective behavior.

Main Methods:

Studied clonal populations of Escherichia coli migrating collectively in a channel.
Quantified individual chemotactic abilities and cell positions within the population.
Analyzed the relationship between individual performance and the local gradient steepness.

Main Results:

Identified significant differences in individual chemotactic abilities among clonal cells.
Discovered spontaneous cell sorting within the migrating band.
Demonstrated that individual sorting compensates for performance differences via gradient steepness.

Conclusions:

Bacterial populations can achieve collective migration despite individual variation.
Self-sorting mechanisms reconcile individual differences with group cohesion.
This process allows populations to maintain beneficial diversity during collective movement.