Stability Analysis of a Ratio-Dependent Predator-Prey Model Incorporating a Prey Refuge | Zendy

Lingshu Wang | Zendy; Guanghui Feng | Zendy

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Stability Analysis of a Ratio-Dependent Predator-Prey Model Incorporating a Prey Refuge

Author(s) -

Lingshu Wang,

Guanghui Feng

Publication year - 2014

Publication title -

journal of applied mathematics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.307

H-Index - 43

eISSN - 1687-0042

pISSN - 1110-757X

DOI - 10.1155/2014/978758

Subject(s) - stability (learning theory) , predation , extinction (optical mineralogy) , predator , population , bifurcation , mathematics , computer science , ecology , physics , chemistry , biology , mineralogy , machine learning , nonlinear system , quantum mechanics , sociology , demography

A ratio-dependent predator-prey model incorporating a prey refuge with disease in the prey population is formulated and analyzed. The effects of time delay due to the gestation of the predator and stage structure for the predator on the dynamics of the system are concerned. By analyzing the corresponding characteristic equations, the local stability of a predator-extinction equilibrium and a coexistence equilibrium of the system is discussed, respectively. Further, it is proved that the system undergoes a Hopf bifurcation at the coexistence equilibrium, when τ=τ0. By comparison arguments, sufficient conditions are obtained for the global stability of the predator-extinction equilibrium. By using an iteration technique, sufficient conditions are derived for the global attractivity of the coexistence equilibrium of the proposed system

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