Bulletin of the American Physical Society
APS March Meeting 2014
Volume 59, Number 1
Monday–Friday, March 3–7, 2014; Denver, Colorado
Session F12: Biophysical Dynamics and Locomotion
8:00 AM–10:36 AM,
Tuesday, March 4, 2014
Sponsoring Units: DBIO DFD
Chair: Arpita Upadhyaya, University of Maryland
Abstract ID: BAPS.2014.MAR.F12.6
Abstract: F12.00006 : Fluid flow enhances the effectiveness of toxin export by aquatic microorganisms: a first-passage perspective*
9:00 AM–9:12 AM
Preview Abstract Abstract
(Univ of Michigan - Dearborn)
(University of Michigan - Dearborn)
Aquatic microorganisms face a variety of challenges in the course of development. One central challenge is efficiently regulating the export of toxic molecules inside the developing embryo. The strategies employed should be robust with respect to the variable ocean environment and limit the chances that exported toxins are reabsorbed. In this talk we consider the first-passage problem for the uptake of exported toxins by a spherical embryo. A perturbative solution of the advection-diffusion equation reveals that a concentration boundary layer forms in the vicinity of the embryo, and that fluid flow enhances the effectiveness of toxin export. We highlight connections between the model results and recent experiments on the development of sea urchin embryos.
*We acknowledge financial support from the University of Michigan-Dearobrn CASL Faculty Summer Research Grant.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.MAR.F12.6
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