“…Although some studies reported that high-ranking males had higher rates of reproductive success (long-tailed macaques [de Ruiter et al, 1994]; rhesus macaques [Widdig et al, 2004]; toque macaques [Keane et al, 1997]), others failed to find any correlation, sometimes in the same species (Japanese macaques [Inoue et al, 1993]; long-tailed macaques [Shively & Smith, 1985]; rhesus macaques [Berard et al, 1993]). In Barbary macaques, initial studies led to the assumption that mating and, most probably, reproductive success is dependent on a male's social position in the group [Paul, 1989], whereas other studies have yielded contrasting results [Kümmerli & Martin, 2005]. Paul et al [1993] found a relationship between dominance rank and reproductive success, but this relationship was not found when only adult males were considered.…”