International Journal of Mathematics and Mathematical Sciences
Volume 2006 (2006), Article ID 63182, 14 pages

Existence of positive periodic solutions for delayed predator-prey patch systems with stocking

Hui Fang1 and Zhicheng Wang2

1Faculty of Information Science and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, Zhejiang, China
2Department of Applied Mathematics, Hunan University, Changsha 410082, China

Received 28 July 2005; Revised 11 December 2005; Accepted 25 January 2006

Copyright © 2006 Hui Fang and Zhicheng Wang. 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 sufficient condition is derived for the existence of positive periodic solutions for a delayed predator-prey patch system with stocking. Some known results are improved.