数学物理学报

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一个具有时滞和阶段结构的捕食-被捕食模型

徐瑞;郝飞龙;陈兰荪   

  1. 军械工程学院应用数学研究所 石家庄 050003;

    西安交通大学理学院 西安 710049

  • 收稿日期:2004-06-18 修回日期:2005-07-03
  • 通讯作者: 徐瑞
  • 基金资助:
    国家自然科学基金(10471066)资助

A Stage-Structured Predator-Prey Model with Time Delays

Xu Rui; Hao Feilong ;Chen Lansun   

  1. Institute of Applied Mathematics, Ordnance Engineering College, Shijiazhuang 050003;
    College of Science, Xi'an Jiaotong University, Xi'an 710049
  • Received:2004-06-18 Revised:2005-07-03
  • Contact: Xu Rui

摘要: 研究一个具有时滞和阶段结构的捕食者-食饵模型.通过构造适当的Lyapunov泛函,讨论了该模型的正平衡点和非负边界平衡点的全局吸引性,从而得到了保证该生态系统永久持续生存与绝灭的充分性条件.

关键词: 阶段结构, 捕食者-食饵模型, 时滞, 永久持续生存, 绝灭

Abstract: A delayed predator-prey model with stage structure for prey is
investigated. By constructing suitable Lyapunovfunctionals, the authors discuss the global attractivity of nonnega tiveequilibria. A set of easily verifiable sufficient conditions are derived for the permanence and extinction of the proposed ecological system.

Key words: Stage structure, Predator-prey model, Time delay, Permanence, Extinction

中图分类号: 

  • 34K20