Two-Dimensional Gravitactic Bioconvection in a Protozoan (Tetrahymena pyriformis) Culture

Tri Nguyen-Quang; The Hung Nguyen; Frederic Guichard; Ana Nicolau; George Szatmari; Georges LePalec; Martine Dusser; Josee Lafossee; Jean Louis Bonnet; Jacques Bohatier

doi:10.2108/zsj.26.54

1 January 2009 Two-Dimensional Gravitactic Bioconvection in a Protozoan (Tetrahymena pyriformis) Culture

Tri Nguyen-Quang, The Hung Nguyen, Frederic Guichard, Ana Nicolau, George Szatmari, Georges LePalec, Martine Dusser, Josee Lafossee, Jean Louis Bonnet, Jacques Bohatier

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Zoological Science, 26(1):54-65 (2009). https://doi.org/10.2108/zsj.26.54

Abstract

Gravitactic bioconvective patterns created by Tetrahymena pyriformis in a Hele-Shaw apparatus were realized and compared with theoretical results. There were found to be two thresholds for bio-convection development: the first indicates the transition from the diffusion to the steady convection state; the second corresponds to the transition from the steady to the unsteady convection state. The results showed that the Hele-Shaw apparatus may be used as a physical analogy of porous media to study 2D bioconvection, with possible extensions to larger scale biological systems where population growth and distribution are driven by similar bio-physical interactions.

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Tri Nguyen-Quang, The Hung Nguyen, Frederic Guichard, Ana Nicolau, George Szatmari, Georges LePalec, Martine Dusser, Josee Lafossee, Jean Louis Bonnet, and Jacques Bohatier "Two-Dimensional Gravitactic Bioconvection in a Protozoan (Tetrahymena pyriformis) Culture," Zoological Science 26(1), 54-65, (1 January 2009). https://doi.org/10.2108/zsj.26.54

Received: 25 April 2008; Accepted: 1 October 2008; Published: 1 January 2009

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