Periodic solutions for delay differential equations model of plankton allelopathy
In this paper, we propose a modified delay differential equation model of the growth of two species of plankton having competitive and allelopathic effects on each other. By using the continuation theorem of coincidence degree theory, a set of easily verifiable sufficient conditions are obtained for the existence of positive periodic solutions for this model. (C) 2002 Elsevier Science Ltd. All rights reserved.
periodic solution allelopathy coincidence degree distributed delay competition system