Positive periodic solution for a delay diffusive predator-prey system with Holling type III functional response and harvest impulse

In this paper, a delay diffusive predator-prey system with Holling type III functional response and harvest impulse is investigated. By employing the continuation theorem of Mawhin's coincidence degree, some new and interesting sufficient conditions about the existence of positive periodic solution for this system are derived. Finally, An numerical example is given to illustrate the validity of the obtained results.