带有食人现象的非局部捕食者-猎物模型的动力学分析

IF 2.3 4区 数学 Q1 MATHEMATICS, APPLIED
Daifeng Duan, Ben Niu, Junjie Wei, Yuan Yuan
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引用次数: 0

摘要

在动物物种中,为平息对有限资源的竞争,食人往往是一种极端的相互作用。为了模拟这一关键因素,我们改进了具有非局部竞争效应的捕食者-猎物模型,加入了食人项,并在该模型中数值地考虑了不同的竞争核。我们给出了导致双霍普夫分岔的临界条件,其中选择了妊娠时间延迟和扩散系数作为分岔参数。工作的创新点在于双霍普夫分岔点附近,稳定的同质和非同质周期解可以共存。扩展中心流形还原法和法线形式法的理论结果与数值模拟结果十分吻合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The dynamical analysis of a nonlocal predator–prey model with cannibalism
Cannibalism is often an extreme interaction in the animal species to quell competition for limited resources. To model this critical factor, we improve the predator–prey model with nonlocal competition effect by incorporating the cannibalism term, and different kernels for competition are considered in this model numerically. We give the critical conditions leading to the double Hopf bifurcation, in which the gestation time delay and the diffusion coefficient were selected as the bifurcation parameters. The innovation of the work lies near the double Hopf bifurcation point, and the stable homogeneous and inhomogeneous periodic solutions can coexist. The theoretical results of the extended centre manifold reduction and normal form method are in good agreement with the numerical simulation.
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来源期刊
CiteScore
4.70
自引率
0.00%
发文量
31
审稿时长
>12 weeks
期刊介绍: Since 2008 EJAM surveys have been expanded to cover Applied and Industrial Mathematics. Coverage of the journal has been strengthened in probabilistic applications, while still focusing on those areas of applied mathematics inspired by real-world applications, and at the same time fostering the development of theoretical methods with a broad range of applicability. Survey papers contain reviews of emerging areas of mathematics, either in core areas or with relevance to users in industry and other disciplines. Research papers may be in any area of applied mathematics, with special emphasis on new mathematical ideas, relevant to modelling and analysis in modern science and technology, and the development of interesting mathematical methods of wide applicability.
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