Stability and Bifurcation in a Prey–Predator–Scavenger System with Michaelis–Menten Type of Harvesting Function

  • Huda Abdul Satar
  • Raid Kamel Naji
Original Research


In this paper an ecological model consisting of prey–predator–scavenger involving Michaelis–Menten type of harvesting function is proposed and studied. The existence, uniqueness and uniformly bounded of the solution of the proposed model are discussed. The stability and persistence conditions of the model are established. Lyapunov functions are used to study the global stability of all equilibrium points. The possibility of occurrence of local bifurcation around the equilibrium points is investigated. Finally an extensive numerical simulation is carried out to validate the obtained analytical results and understand the effects of scavenger and harvesting on the model dynamics. It is observed that the proposed model is very sensitive for varying in their parameters values especially those related with scavenger and undergoes different types of local bifurcation.


Prey–predator–scavenger Harvesting Stability Bifurcation Persistence 



The authors are very much thankful to the reviewers for their valuable suggestions and constructive comments. Their useful comments have contributed to the improvement of the authors work.


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Copyright information

© Foundation for Scientific Research and Technological Innovation 2019

Authors and Affiliations

  1. 1.Department of Mathematics, College of ScienceUniversity of BaghdadBaghdadIraq

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