Stability and bifurcation in a Holling type II predator–prey model with Allee effect and time delay

Autor: Zaowang Xiao, Xiangdong Xie, Yalong Xue
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Advances in Difference Equations, Vol 2018, Iss 1, Pp 1-21 (2018)
Druh dokumentu: article
ISSN: 1687-1847
DOI: 10.1186/s13662-018-1742-4
Popis: Abstract In this paper, we consider a Holling type II predator–prey model incorporating time delay and Allee effect in prey. We discuss the influence of Allee effect on the logistic equation. By analyzing the characteristic equation of the corresponding linearized system, we give the threshold condition for the local asymptotic stability of the system according to the change of birth rate or Allee effect in prey. Using the delay as a bifurcation parameter, the model undergoes a Hopf bifurcation at the coexistence equilibrium when the delay crosses some critical values. In addition, we show that if the Allee effect is large or the birth rate is small, then both predators and prey are extinct. The Allee effect can influence the stability of the system.
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