Doron Levy - Group dynamics in phototaxis

This talk was part of the Thematic Programme on "Mathematical Methods for the Study of Self-organization in the Biological Sciences" held at the ESI November 14 to December 9, 2022.

Microbes live in environments that are often limiting for growth. They have evolved sophisticated mechanisms to sense changes in environmental parameters such as light and nutrients, after which they swim or crawl into optimal conditions. This phenomenon is known as "chemotaxis" or "phototaxis." Using time-lapse video microscopy we have monitored the movement of phototactic bacteria, i.e., bacteria that move towards light. These movies suggest that single cells are able to move directionally but at the same time, the group dynamics is equally important. In this talk we will describe different mathematical approaches to modeling the emerging group dynamics in phototaxis, including discrete, kinetic, and PDE-based methods.

Видео Doron Levy - Group dynamics in phototaxis канала Erwin Schrödinger International Institute for Mathematics and Physics (ESI)