Acta mathematica scientia,Series A ›› 2025, Vol. 45 ›› Issue (4): 1206-1216.

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Single Population Dynamics Model of Fish with Seasonal Switching and Impulsive Perturbations

Zeng Xiaping(),Lu Wenwen,Pang Guoping,Liang Zhiqing*()   

  1. Center for Applied Mathematics of Guangxi, Yulin Normal University, Guangxi Colleges and Universities Key Laboratory of Complex System Optimization and Big Data Processing, Yulin Normal University, Guangxi Yulin 537000
  • Received:2024-08-12 Revised:2025-04-14 Online:2025-08-26 Published:2025-08-01
  • Supported by:
    NSFC(12261096);Natural Science Foundation of Guangxi Grants(2024GXNSFBA010395);Project for enhancing Young and Middle-aged teacher's research basic ability in colleges of Guangxi(2021KY0592);Project for enhancing Young and Middle-aged teacher's research basic ability in colleges of Guangxi(2022KY0582);Project for enhancing Young and Middle-aged teacher's research basic ability in colleges of Guangxi(2025KY0675);Systematic Project of Center for Applied Mathematics of Guangxi(2023CAM005)

Abstract:

This paper considers a class of single population dynamics models for fish that incorporates seasonal switching and impulsive perturbations. It investigates the effects of these factors on fish population dynamics. By employing the discrete dynamical system theory and stroboscopic mapping, we derive the sufficient conditions for the permanence and extinction of the fish population system. Using rational difference equations and fixed point theory, we demonstrate the existence of a unique globally attractive positive periodic solution. Finally, numerical simulations are provided to validate the theoretical results.

Key words: impulsive disturbance, permanence, seasonal switching, periodic solution

CLC Number: 

  • O175.2
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