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The Complex Dynamics of a Stochastic Predator‐Prey Model

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  • Xixi Wang
  • Huilin Huang
  • Yongli Cai
  • Weiming Wang

Abstract

A modified stochastic ratio‐dependent Leslie‐Gower predator‐prey model is formulated and analyzed. For the deterministic model, we focus on the existence of equilibria, local, and global stability; for the stochastic model, by applying Itô formula and constructing Lyapunov functions, some qualitative properties are given, such as the existence of global positive solutions, stochastic boundedness, and the global asymptotic stability. Based on these results, we perform a series of numerical simulations and make a comparative analysis of the stability of the model system within deterministic and stochastic environments.

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Handle: RePEc:wly:jnlaaa:v:2012:y:2012:i:1:n:401031
DOI: 10.1155/2012/401031
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