Maximal response to a mechanical leader at critical group size in ant collectives
Abstract It is widely recognized that biological collectives operate near criticality to amplify their capability of collective response. The peak in susceptibility near criticality renders these groups highly responsive to external stimuli. While this phenomenon has been recognized and supported by...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-61158-6 |
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| _version_ | 1849334622509334528 |
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| author | Atanu Chatterjee Tom Tzook Nir S. Gov Ofer Feinerman |
| author_facet | Atanu Chatterjee Tom Tzook Nir S. Gov Ofer Feinerman |
| author_sort | Atanu Chatterjee |
| collection | DOAJ |
| description | Abstract It is widely recognized that biological collectives operate near criticality to amplify their capability of collective response. The peak in susceptibility near criticality renders these groups highly responsive to external stimuli. While this phenomenon has been recognized and supported by evidence from theory, a direct experimental demonstration has been elusive. To bridge this gap, here we record the response of a group of Paratrechina longicornis ants to external stimuli as they join efforts to carry food to their nest. Using a robotic system that mimics a transient leader, we apply tactile ant-scale forces and measure the group’s response at sub, near, and supercritical regimes. Supported by theory and simulations, we provide direct experimental evidence to demonstrate that at critical group size, the collective response of the ants to an external force is maximally amplified. |
| format | Article |
| id | doaj-art-7ff98b878ed64ece8dfd093093926720 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-7ff98b878ed64ece8dfd0930939267202025-08-20T03:45:31ZengNature PortfolioNature Communications2041-17232025-07-0116111210.1038/s41467-025-61158-6Maximal response to a mechanical leader at critical group size in ant collectivesAtanu Chatterjee0Tom Tzook1Nir S. Gov2Ofer Feinerman3Department of Physics of Complex Systems, Weizmann Institute of ScienceDepartment of Physics of Complex Systems, Weizmann Institute of ScienceDepartment of Chemical and Biological Physics, Weizmann Institute of ScienceDepartment of Physics of Complex Systems, Weizmann Institute of ScienceAbstract It is widely recognized that biological collectives operate near criticality to amplify their capability of collective response. The peak in susceptibility near criticality renders these groups highly responsive to external stimuli. While this phenomenon has been recognized and supported by evidence from theory, a direct experimental demonstration has been elusive. To bridge this gap, here we record the response of a group of Paratrechina longicornis ants to external stimuli as they join efforts to carry food to their nest. Using a robotic system that mimics a transient leader, we apply tactile ant-scale forces and measure the group’s response at sub, near, and supercritical regimes. Supported by theory and simulations, we provide direct experimental evidence to demonstrate that at critical group size, the collective response of the ants to an external force is maximally amplified.https://doi.org/10.1038/s41467-025-61158-6 |
| spellingShingle | Atanu Chatterjee Tom Tzook Nir S. Gov Ofer Feinerman Maximal response to a mechanical leader at critical group size in ant collectives Nature Communications |
| title | Maximal response to a mechanical leader at critical group size in ant collectives |
| title_full | Maximal response to a mechanical leader at critical group size in ant collectives |
| title_fullStr | Maximal response to a mechanical leader at critical group size in ant collectives |
| title_full_unstemmed | Maximal response to a mechanical leader at critical group size in ant collectives |
| title_short | Maximal response to a mechanical leader at critical group size in ant collectives |
| title_sort | maximal response to a mechanical leader at critical group size in ant collectives |
| url | https://doi.org/10.1038/s41467-025-61158-6 |
| work_keys_str_mv | AT atanuchatterjee maximalresponsetoamechanicalleaderatcriticalgroupsizeinantcollectives AT tomtzook maximalresponsetoamechanicalleaderatcriticalgroupsizeinantcollectives AT nirsgov maximalresponsetoamechanicalleaderatcriticalgroupsizeinantcollectives AT oferfeinerman maximalresponsetoamechanicalleaderatcriticalgroupsizeinantcollectives |