In this study, we examine a competitive Nicholson blowflies model with time-varying coefficients and continuous time delays. the case of coincidence degree theory, constructing appropriate Lyapunov functionals using several inequalities, conditions on extinction, periodic solution, permanence, global attractiveness system are derived. Finally, three examples numerical simulations presented to v...

We studied a host-parasite model qualitatively. The host-parasitoid is obtained by modifying the Nicholson-Bailey so that number of hosts parasitoids can't attack fixed. Topological classification equilibria achieved with implementation linearization. Furthermore, Neimark-Sacker bifurcation explored using theory normal forms at interior steady-state. in controlled implementing two control strat...