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© Thibaut Brunet
C. flexa colonies fixed at different stages of inversion
Publication : Physical review letters

Swimming, Feeding, and Inversion of Multicellular Choanoflagellate Sheets.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Physical review letters - 20 Oct 2023

Fung L, Konkol A, Ishikawa T, Larson BT, Brunet T, Goldstein RE

Link to Pubmed [PMID] – 37925718

Link to DOI – 10.1103/PhysRevLett.131.168401

Phys Rev Lett 2023 Oct; 131(16): 168401

The recent discovery of the striking sheetlike multicellular choanoflagellate species Choanoeca flexa that dynamically interconverts between two hemispherical forms of opposite orientation raises fundamental questions in cell and evolutionary biology, as choanoflagellates are the closest living relatives of animals. It similarly motivates questions in fluid and solid mechanics concerning the differential swimming speeds in the two states and the mechanism of curvature inversion triggered by changes in the geometry of microvilli emanating from each cell. Here we develop fluid dynamical and mechanical models to address these observations and show that they capture the main features of the swimming, feeding, and inversion of C. flexa colonies, which can be viewed as active, shape-shifting polymerized membranes.