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Differences in the relatedness estimate for the pre-experimental phase (r2001) and the post-experimental phase (r2004) for the three treatments (mean±s.e.m.), calculated as rdiff=r2001−r2004. R-colonies, colonies where queens were removed (N=30); A-colonies, colonies where queens were added (N=25); C-colonies, colonies where queen number was not manipulated (N=24).
