IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Energetics and dynamics of microorganism motility: a realistic description of bacterial motion
Autor/es:
MARIO DI SALVO Y CARLOS CONDAT
Reunión:
Workshop; Workshop on Mathematical Methods and Modeling of Biophysical Phenomena; 2011
Resumen:
A theoretical framework is developed to study how self-propelled organisms administer their energetic resources in order to optimize the exploration of space. Due to the existence of two very different time scales, a quasi-static approximation can be used to analyze the bacterial dynamics and the changes in the stored energy. The steady state and quasi-static state solutions are analytically obtained and we complete the description with numerical simulations. We also discuss the dependence of the characteristic times with microorganism size and the speed dependence of the energy transfer rate to the bacterial motors. Finally we can estimate the size of the region that a starving bacterium can explore until it stops its motion.