数学物理学报

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捕食者具有阶段结构Holling II类功能性反应的捕食模型

陈凤德; 陈晓星; 张惠英   

  1. 福州大学数学与计算机科学学院
  • 收稿日期:2003-11-05 修回日期:2004-12-10 出版日期:2006-02-25 发布日期:2006-02-25
  • 通讯作者: 陈凤德
  • 基金资助:

    国家自然科学基金(天元基金)(10426010);福建省青年科技人才创新基金(2004J002);福建省教育厅基金(JA04156);福州大学校科技发展基金(2003-XQ-21)

Positive Periodic Solutions of a Delayed Predator-Prey System with Holling Type II Functional Response

Chen Fengde;Chen Xiaoxing ;Zhang Huiying
  

  1. College of Mathematics and Computer Sciences, Fuzhou University
  • Received:2003-11-05 Revised:2004-12-10 Online:2006-02-25 Published:2006-02-25
  • Contact: Chen Fengde

摘要: 利用重合度理论中的延拓定理讨论了捕食者具有阶段结构Holling II类功能性反应的捕食模型的正周期解的存在性,得到了保证周期解存在的充分性条件,推广了已知的相关结果. 同时通过构造Lyapunov函数得到了保证周期解稳定性的充分性条件.

关键词: 捕食者-食饵系统, Holling II类功能性反应, 阶段结构, 重合度, 周期解.

Abstract: By using a continuation theorem based on Gaines and Mawhin's coincidence degree, the authors study the global exisence of positive periodic solutions of a delayed predator-prey system with Holling II type response and stage structure for predator. A set of easily verifiable sufficient conditions is obtained, which improves some known results. Also, by constructing a suitable Lyapunov function, sufficient conditions which guarantee the global attractivity of the positive periodic solution are obtained.

Key words: Periodic solution, Holling II type functional response, Stage structure, Coincidence degree, Delay

中图分类号: 

  • 34K20