Ratio of neutral gas mass to baryonic mass (=M_star + M_gas) as a function of deprojected distance from the dominant subgroup galaxy. The black open circles represent the CenA subgroup late-type dwarfs, while the black filled circles are M 83 subgroup members (data taken from Crnojević et al. 2011a). Grey squares indicate the old distances for three of the CenA subgroup members, while black open circles for the same galaxies are new distances that we recompute because they are actually closer to M 83 than to CenA (see text for details).