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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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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2D gravitactic bioconvection
cell movement
Hele-Shaw cell
porous medium
Tetrahymena pyriformis (TP)
