Positive periodic solutions in a non-selective harvesting predator-prey model with multiple delays

This paper is concerned with a predator-prey model with Hassell-Varley type functional response, non-selective harvesting and multiple delays. Some new sufficient conditions are obtained for the existence of positive periodic solutions by applying the coincidence degree theorem. In addition, the results are delay-dependent, which is different from the previous work. Finally, simulations illustrate the effectiveness of our results.