We have investigated the dynamics of a two-dimensional spreading of a bacterial population in a surface environment. After point inoculation of flagellated bacteria ({ Bacillus subtilis}) on nutrient-rich semi-solid medium, the bacterial population grew up by multiplication and translocation of cells, and developed a homogeneous round colony. By comparing experimental results with those of numerical simulations of the model equation, we found that this homogeneous population growth of bacteria is an actual manifestation of growth dynamics described by the Fisher's equation.
Subject area: Thermal properties of condensed matter.
1994 Volume 63 Issue 3 Pages
1216-1217
Published: March 01, 1994
Released on J-STAGE: October 01, 1999
Subject area: Magnetic properties and materials.
1994 Volume 63 Issue 3 Pages
1218-1219
Published: March 01, 1994
Released on J-STAGE: October 01, 1999