Acta mathematica scientia,Series A ›› 2018, Vol. 38 ›› Issue (5): 984-1000.

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Stationary Distribution and Periodic Solution for Stochastic Predator-Prey Systems with Holling-Type Ⅲ Functional Response

Guijie Lan,Yingjie Fu,Chunjin Wei,Shuwen Zhang*()   

  1. School of Sciences, Jimei University, Fujian Xiamen 361021
  • Received:2017-07-25 Online:2018-11-09 Published:2018-11-09
  • Contact: Shuwen Zhang E-mail:zhangsw_123@126.com
  • Supported by:
    the Fujian Provincial Natural Science Foundation(2016J05012);the Fujian Provincial Natural Science Foundation(2016J01667)

Abstract:

In this paper, we investigate the dynamics of stochastic predator-prey systems with Holling-type Ⅲ functional response. For the autonomous system, we firstly obtain that the system admits unique positive global solution starting from the positive initial value. Then, by comparison theorem for stochastic differential equation, sufficient conditions for extinction and persistence in mean are obtained. Thirdly, by constructing some suitable Lyapunov function, we prove that there are unique stationary distribution and they are ergodic. On the other hand, for the non-autonomous periodic system, we prove that there exists at least one nontrivial positive periodic solution according to the theory of Has'minskii. Finally, some numerical simulations are introduced to illustrate our theoretical result.

Key words: Predator-prey system, Random perturbation, Stationary distribution and ergodicity, Periodic solution

CLC Number: 

  • O211.63
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