Dynamic analysis and bifurcation control of a delayed fractional-order eco-epidemiological migratory bird model with fear effect  

作　　者：Caihong Song Ning Li 

机构地区：[1]College of Sciences,Northeastern University 110819 Shenyang,Liaoning,P.R.China

出　　处：《International Journal of Biomathematics》2024年第3期1-33,共33页生物数学学报（英文版）

基　　金：supported by Liaoning Provincial Department of Education Scientific Research Fund Project(lnjc202018).

摘　　要：In this paper,a new delayed fractional-order model including susceptible migratory birds,infected migratory birds and predators is proposed to discuss the spread of diseases among migratory birds.Fear of predators is considered in the model,as fear can reduce the reproduction rate and disease transmission rate among prey.First,some basic mathematical results of the proposed model are discussed.Then,time delay is regarded as a bifurcation parameter,and the delay-induced bifurcation conditions for such an uncontrolled system are established.A novel periodic pulse feedback controller is proposed to suppress the bifurcation phenomenon.It is found that the control scheme can successfully suppress the bifurcation behavior of the system,and the pulse width can be arbitrarily selected on the premise of ensuring the control effect.Compared with the traditional time-delay feedback controller,the control scheme proposed in this paper has more advantages in practical application,which not only embodies the advantages of low control cost and easy operation but also caters to the periodic changes of the environment.The proposed control scheme,in particular,remains effective even after the system has been disrupted by a constant.Numerical simulation verifies the correctness of the theoretical results.

关 键 词：DELAYED FRACTIONAL-ORDER migratory birds FEAR Hopf bifurcation periodic pulse feedback 

分 类 号：O17[理学—数学]