In a laboratory experiment, Clarke and Faulkes (1997) demonstrated that reproductive status in a colony of "H. glaber" was correlated with the individual's ranking position within a dominance hierarchy, but aggression between potential reproductives only started after the queen was removed.
In a laboratory experiment, Clarke and Faulkes (1997) Clarke FM, Faulkes CG. Proc Biol Sci.264 (1384): 993--1000 demonstrated that reproductive status in a colony of "H. glaber" was correlated with the individual's ranking position within a dominance hierarchy, but aggression between potential reproductives only started after the queen was removed.