The dynamical behavior of some eco-epidemiological models is investigated. Two types of prey-predator models involving infectious disease in predator population, which divided it into two compartments; namely susceptible population and infected population , are proposed and analyzed. The first proposed model deals with SIS infectious disease that transmitted directly from external sources, as well as, through direct contact between susceptible and infected individuals using linear type of incidence rate. While, the second proposed model deals with SIS infectious disease that transmitted through the direct contact between susceptible and infected individuals only using nonlinear type of incidence rate. Both the models are represented mathematically by the set of nonlinear differential equations. The existence, uniqueness and boundedness of the solution of these two models are investigated. The local and global stability conditions of all possible equilibrium points are established. The occurrence of local bifurcation and Hopf bifurcation near each of the equilibrium points are discussed. Finally, numerical simulation is used to study the global dynamics of the both models.

About the Author

Miss. Rasha Majeed Yaseen is Assistant Lecturer in Mechatronics Engineering Department/Faculty of AL-Khwarizmi College of Engineering/University of Baghdad/Iraq.She was awarded her M.Sc.degree in Science Applied Mathematics from College of Science/University of Baghdad/Iraq since 2012.She worked in various projects in the field of Dynamical Systems

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