Stability analysis of a diseased Prey - Predator - Scavenger system incorporating migration and competition

Document Type : Research Paper


1 Department of Mathematics, College of Science, University of Baghdad, Baghdad-Iraq

2 Department of Mathematics, College of Science, Baghdad University, Baghdad, Iraq


In this paper, a prey-predator-scavenger model is proposed and analyzed. It is assumed that the model considered the effect of disease on the prey. Firstly, the existence, uniqueness and boundedness of the solution of the model are discussed. Secondly, we studied the existence and local stability of all equilibrium points. Furthermore, some of the Sufficient conditions of the global stability of the positive equilibrium are established using suitable Lyapunov functions. Finally, those theoretical results are demonstrated with numerical simulations.


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Volume 12, Issue 2
November 2021
Pages 1827-1853
  • Receive Date: 09 March 2021
  • Revise Date: 27 May 2021
  • Accept Date: 10 July 2021