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Collective and synchronized motion in animal groups: from sheep to fish| title | Collective and synchronized motion in animal groups: from sheep to fish |
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| start_date | 2023/12/05 |
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| schedule | 12h15 |
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| online | no |
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| location_info | Salle de conférence | 4R4-RDC |
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| details | BEHAVIOR séminaire public |
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| summary | In this talk I will present two studies of collective behavior observed in animal groups. In the first one, we studied the spontaneous and intermittent collective displacements observed in small groups of sheep and studied particularly the role of leader, who was not always the same individual. We investigated the benefits of such 'democratic' leadership and found scenarios where individuals of the group might benefit from this strategy. In the second study I will present experimental data acquired in Teapa, Mexico, where groups of sulphur mollies evolved to live in sulphidic springs with high concentration of hydrogen sulphide. In this system, we studied the highly conspicuous, repetitive, and rhythmic collective dive cascades produced by many thousands of these fish that resemble neuronal avalanches observed in brain tissue at criticality. Together with the results of an agent-based model of the system, we explored the functionality of this behaviour for the fish by using machine learning algorithms and showed that the best-fitting model allows information about external perturbations – such as predator attacks – to propagate most effectively through the shoal. |
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| responsibles | Contact CBI |
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Workflow history| from state (1) | to state | comment | date |
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| submitted | published | | 2023/11/29 15:15 UTC |
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