ANALYSIS ON A MODIFIED LESLIE-GOWER AND HOLLING-TYPE II PREDATOR-PREY SYSTEM INCORPORATING A PREY REFUGE AND TIME DELAY

ANALYSIS ON A MODIFIED LESLIE-GOWER AND HOLLING-TYPE II PREDATOR-PREY SYSTEM INCORPORATING A PREY REFUGE AND TIME DELAY
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结合猎物避难所和时间延迟的改进型 LESLIE-GOWER 和 HOLLING-II 型捕食者-猎物系统分析

DOI:
10.12732/dsa.v27i2.12
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发表时间:
2018-05
影响因子:
--
通讯作者:
MA ZHIHUI
MA ZHIHUI
中科院分区:
工程技术3区
文献类型:
--
作者:
CHEN SHILIANG;LI WEIDE;MA ZHIHUI

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本文讨论了一类具有时滞的捕食-食饵模型,在该模型中,时滞被看作是分支参数,并采用修正的Leslie-Grower格式.的功能反应被认为是Holling型II,并采用了恒定比例的猎物避难所。该模型被认为是从这个特定的功能反应的持久性和稳定性的角度来看。利用构造的李雅普诺夫函数,研究了共存平衡点的渐近稳定性。对时滞系统进行了分析,重点研究了捕食者的妊娠时滞τ .研究了系统在正内部平衡点附近的Hopf分支。分析了系统的Hopf分支方向和分支周期解的稳定性。最后,通过数值仿真验证了本文的理论结果. AMS科目分类:92 D25
This paper describes a delayed predator-prey model with modified Leslie-Grower scheme, in which the time delays are regarded as bifurcation parameters. The functional response is considered to be of Holling-type II and incorporates a constant proportional prey refuge. The model is considered from the point of view of persistence and stability for this particular functional response. The asymptotic stability of coexist equilibrium is examined by using constructed Lyapunov function. The delayed system is analyzed with focusing on the gestation delay of predator τ . We investigate the occurrence of Hopf bifurcation in the neighborhood of the positive interior equilibrium. Moreover, the direction of the Hopf bifurcation and the stability of bifurcating periodic solution are analyzed. Finally, numerical simulations are carried out to verify the theoretical results of the paper. AMS Subject Classification: 92D25
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发表时间: 2012-08
影响因子: 2
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