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. 2013 Jun 12;8(6):e65962. doi: 10.1371/journal.pone.0065962

Figure 3. (a) The duration of grooming nonmothers invested in mothers before getting access to the infants in relation to the number of infants per female in each one-male unit.

Figure 3

When the number of infants per female in each one-male unit increased the amount of grooming given to mothers also decreased. (b) The duration of grooming varied with the number of infants per female during each of the 3 infant birth seasons in a given OMU (total 6 OMUs). Similarly the amount of grooming that nonmothers gave to mothers was negatively correlated with the number of infants in the OMU. The 6 OMUs are identified as follows: JB, FP, PK, JZT, BB, RX. Each sign represents one OMU in one birth season–JB (○) FP (*) PK (□) JZT (◊) BB (Δ) RX (×).