  In this paper, we apply a Lyapunov functional approach to Lotka-Volterra
systems with infinite delays and feedback controls and establish that the
feedback controls have no influence on the attractivity properties of a
saturated equilibrium. This improves previous results by the authors and
others, where, while feedback controls were used mostly to change the position
of a unique saturated equilibrium, additional conditions involving the controls
had to be assumed in order to preserve its global attractivity. The situation
of partial extinction is further analysed, for which the original system is
reduced to a lower dimensional one which maintains its global dynamics
features.
