Spatial features of population dynamics arising from mutual interaction   of different age groups in rodents
  We study the dynamics of the transmission of the hanta virus infection among mouse populations, taking into account, simultaneously, seasonal variations of the environment and interactions within two classes in the mouse population: adults and subadults. The interactions considered are not symmetric between the two age-organized classes and are responsible for driving the younger members away from home ranges. We consider the case of a bounded habitat affected by seasonal variations. 
M. N. Kuperman and V. M. Kenkre