Swimming, Feeding and Inversion of Multicellular Choanoflagellate Sheets

Author:

Fung LloydORCID,Konkol Adam,Ishikawa TakujiORCID,Larson Ben T.ORCID,Brunet ThibautORCID,Goldstein Raymond E.ORCID

Abstract

AbstractThe recent discovery of the striking sheet-like multicellular choanoflagellate speciesChoanoeca flexathat 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 ofC. flexacolonies.

Publisher

Cold Spring Harbor Laboratory

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