Persistence and almost periodic solutions for a discrete fishing model with feedback control

In this paper, we discuss an almost periodic discrete fishing model with feedback control of the formx(n+1)=x(n)expa(n)1+x(n)K(n)r−b(n)−c(n)u(n),Δu(n)=−α(n)u(n)+β(n)x(n).Sufficient conditions are established for the persistence of above system and the existence and uniformly asymptotical stability of almost periodic solution to this system is investigated. Some examples are also given to illustrate the feasibility of the main results.