Acta mathematica scientia,Series A ›› 2024, Vol. 44 ›› Issue (5): 1368-1379.

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Exponential Extinction, Stationary Distribution and Probability Density Function of A Stochastic Predator-Prey Model with Ornstein-Uhlenbeck Process

Zhang Wenwen,Liu Zhijun*(),Wang Qinglong   

  1. School of Mathematics and Statistics, Hubei Minzu University, Hubei Enshi 445000
  • Received:2023-10-30 Revised:2024-04-15 Online:2024-10-26 Published:2024-10-16
  • Supported by:
    National Natural Science Foundation of China(12101211);Natural Science Foundation of Hubei Province of China(2023AFB1095)

Abstract:

In the paper, a stochastic predator-prey model with Ornstein-Uhlenbeck process, fear effect, Crowley-Martin type and Leslie-Gower type functional responses is considered. Firstly, by constructing suitable Lyapunov functions, we prove that the existence and uniqueness of the global solution, and the sufficient conditions for the exponential extinction and the existence of stationary distribution are obtained. Secondly, we get access to the specific expression of probability density function via dealing with the corresponding Fokker-Planck equation. Finally, our theoretical results are verified by three numerical examples. The results show that the intensity of volatility and the reversion speed of stochastic disturbance will affect the survival of species.

Key words: Predator-Prey model, Ornstein-Uhlenbeck process, Exponential extinction, Stationary distribution, Probability density function

CLC Number: 

  • O175
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