  We investigate the role of dissolution of low-concentration clusters due to
mass loss through stellar evolution on the evolution of the properties of
globular cluster systems (GCSs) in elliptical galaxies. Our simulations show
that, for an initial mass-concentration relationship based on that inferred
from Galactic globular clusters, dissolution of low-concentration clusters
leads to the disruption of a large number of clusters. A power-law initial
globular cluster system mass function (GCMF) similar to that observed in young
cluster systems in merging galaxies is transformed by this dissolution into a
bell-shaped GCMF with a mean mass similar to that of old GCSs for all the
galaxies investigated. Two-body relaxation and dynamical friction, which are
also included in our simulations, subsequently lead to an additional
significant evolution and disruption of the population of clusters. As shown
previously, when these processes act on a bell-shaped GCMF with a mean mass
similar to that of old GCS, they do not significantly alter the value of the
mean mass. The final GCMFs are bell-shaped with similar peaks at different
radii within galaxies and between different galaxies, in agreement with current
observations.
