Study on a non-autonomous predator–prey system with Beddington–DeAngelis functional response

In this paper, a predator–prey system with Beddington–DeAngelis functional response is studied, where the predator preys on nn competing preys. We prove that the system admits very rich dynamics, including permanence, ultimate boundedness, extinction. Moreover, under some appropriate assumptions, there exists a unique almost periodic solution which is shown to be globally asymptotically stable.