西安工程大学学报2024,Vol.38Issue(4) :122-132.DOI:10.13338/j.issn.1674-649x.2024.04.016

具有食饵趋向性的捕食-食饵系统的正稳态解

Positive steady-state solutions of a predator-prey system with prey-taxis

董亚莹 高歌
西安工程大学学报2024,Vol.38Issue(4) :122-132.DOI:10.13338/j.issn.1674-649x.2024.04.016

具有食饵趋向性的捕食-食饵系统的正稳态解

Positive steady-state solutions of a predator-prey system with prey-taxis

董亚莹 1高歌1
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作者信息

  • 1. 西安工程大学理学院,陕西西安 710048
  • 折叠

摘要

本文考虑了一类在齐次Dirichlet边界条件下具有食饵趋向性的捕食-食饵模型.基于模型正解的先验估计,利用线性化算子的特征值理论以及谱理论,得到了平凡解与半平凡解的渐近稳定性,运用正锥中的不动点指数理论,建立了正稳态解的存在性.通过对2个相关特征值的分析,进一步得到了模型正解关于2个物种增长率的共存区域.研究结果表明:食饵趋向性对模型的稳态解具有明显影响.

Abstract

A predator-prey model with prey-taxis under homogeneous Dirichlet boundary condi-tions was established.Based on the prior estimate of positive solutions,the asymptotic stability of trivial and semi-trivial solutions was obtained by using the eigenvalue theory of linearization oper-ators and spectral theory.The existence of positive steady-state solutions was established using the fixed point index theory in a cone.By analyzing two related eigenvalues,the coexistence re-gion with respect to the growth rates of two species was obtained.The results show that prey-tax-is has an obvious influence on the steady-state solutions.

关键词

捕食-食饵系统/食饵趋向/稳定性/正稳态解

Key words

predator-prey system/prey-taxis/stability/positive steady-state solutions

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出版年

2024
西安工程大学学报
西安工程大学

西安工程大学学报

CSTPCD
影响因子:0.473
ISSN:1674-649X
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