title: The two populations' cellular automata model with predation based on the Penna model
abstract: In Penna's (1995) single-species asexual bit-string model of biological ageing, the Verhulst factor has too strong a restraining effect on the development of the population. Danuta Makowiec gave an improved model based on the lattice, where the restraining factor of the four neighbours take the place of the Verhulst factor. Here, we discuss the two populations' Penna model with predation on the planar lattice of two dimensions. A cellular automata model containing movable wolves and sheep has been built. The results show that both the quantity of the wolves and the sheep fluctuate in accordance with the law that one quantity increases while the other one decreases
keyphrases: population cellular automata model predation Penna model single-species asexual bit-string model biological ageing Verhulst factor restraining effect lattice wolves sheep fluctuation Lotka-Volterra model