International Journal of Differential Equations
Volume 2011 (2011), Article ID 354016, 12 pages
Research Article

Positive Almost Periodic Solutions for a Time-Varying Fishing Model with Delay

Department of Mathematics, Yunnan University, Yunnan, Kunming 650091, China

Received 19 May 2011; Revised 8 August 2011; Accepted 12 August 2011

Academic Editor: Dexing Kong

Copyright © 2011 Xia Li et al. 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.


This paper is concerned with a time-varying fishing model with delay. By means of the continuation theorem of coincidence degree theory, we prove that it has at least one positive almost periodic solution.