Global Hopf Bifurcation on Two-Delays Leslie-Gower Predator-Prey System with a Prey Refuge | Zendy

Qingsong Liu | Zendy; Yiping Lin | Zendy; Jingnan Cao | Zendy

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Global Hopf Bifurcation on Two-Delays Leslie-Gower Predator-Prey System with a Prey Refuge

Author(s) -

Qingsong Liu,

Yiping Lin,

Jingnan Cao

Publication year - 2014

Publication title -

computational and mathematical methods in medicine

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.462

H-Index - 48

eISSN - 1748-6718

pISSN - 1748-670X

DOI - 10.1155/2014/619132

Subject(s) - hopf bifurcation , bifurcation , stability (learning theory) , mathematics , center manifold , algorithm , computer science , mathematical analysis , physics , machine learning , quantum mechanics , nonlinear system

A modified Leslie-Gower predator-prey system with two delays is investigated. By choosing τ 1 and τ 2 as bifurcation parameters, we show that the Hopf bifurcations occur when time delay crosses some critical values. Moreover, we derive the equation describing the flow on the center manifold; then we give the formula for determining the direction of the Hopf bifurcation and the stability of bifurcating periodic solutions. Numerical simulations are carried out to illustrate the theoretical results and chaotic behaviors are observed. Finally, using a global Hopf bifurcation theorem for functional differential equations, we show the global existence of the periodic solutions.

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