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Journal of Applied Mathematics
Volume 2012, Article ID 286961, 18 pages
Research Article

The Effect of Time Delay on Dynamical Behavior in an Ecoepidemiological Model

1Guizhou Key Laboratory of Economics System Simulation, Guizhou University of Finance and Economics, Guiyang 550004, China
2Department of Mathematics and Statistics, Henan University of Science and Technology, Luoyang 471003, China

Received 26 October 2012; Revised 12 November 2012; Accepted 26 November 2012

Academic Editor: Shiping Lu

Copyright © 2012 Changjin Xu and Yusen Wu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A delayed predator-prey model with disease in the prey is investigated. The conditions for the local stability and the existence of Hopf bifurcation at the positive equilibrium of the system are derived. The effect of the two different time delays on the dynamical behavior has been given. Numerical simulations are performed to illustrate the theoretical analysis. Finally, the main conclusions are drawn.