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Study Reveals Physical Forces Shaped Early Multicellularity

New research highlights cooperative feeding behaviors in unicellular Stentor coeruleus as a precursor to multicellular evolution.

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Dynamic colony of Stentor individuals. Credit: Shekhar et al., Nature Physics, 2025

Overview

  • The study, published in *Nature Physics*, identifies cooperative feeding behaviors in Stentor coeruleus as an early driver of multicellular evolution.
  • Researchers demonstrated that neighboring Stentors double their feeding efficiency by creating stronger fluid flows together, benefiting the colony as a whole.
  • Unlike other early multicellular models, Stentor colonies are temporary and composed of genetically distinct individuals, representing a primitive stage of multicellularity.
  • Mathematical modeling confirmed that Stentor colonies optimize energetic payoffs through frequent partner switching, termed 'promiscuity.'
  • The research challenges traditional chemical-centric views of multicellularity's origins by emphasizing the role of physical forces in evolutionary history.