Table 1. Overview of male reproductive competition in one bonobo (bold) and five chimpanzee communities over 7-year and 12-year time periods.
| Species | Community | Time period | Number of time periods | Average number of males per conceptiona | Number of paternitiesa | Nonac's B indexa | Most successful sire's sharea [%] | Average rank of sires (95% C.I.) | |
|---|---|---|---|---|---|---|---|---|---|
| 7-year periods | Bonobos | Bompusa | 2007–2013 | 1 | 7.4 | 13 | 0.22 | 62 | 0.81 (0.63–0.95) |
| Chimpanzees | Taï North | 1987–1994 | 2 | 6.3 (6.1–6.5) | 10.5 (10–11) | 0.09 (0.07–0.11) | 51 (45–56) | 0.77 (0.60–0.91) | |
| Chimpanzees | Kasakela | 1985–2011 | 21 | 11.6 (11.3–12.3) | 12 (8–16) | 0.05 (-0.03–0.14) | 31 (13–45) | 0.65 (0.53–0.76) | |
| Chimpanzees | M group | 1999–2005 | 1 | 11.6 | 11 | 0.06 | 36 | 0.91 (0.84–0.97) | |
| Chimpanzees | Sonso | 1993–2002 | 4 | 16.0 (15.7–16.2) | 11 (11–11) | 0.01 (0.01–0.02) | 34 (27–36) | 0.80 (0.66–0.91) | |
| Chimpanzees | Ngogo | 1996–2014 | 13 | 41.8 (40.2–43.9) | 42 (30–54) | 0.01 (0–0.02) | 11 (7–13) | 0.66 (0.62–0.71) | |
| 12-year periods | Bonobos | Bompusa | 2002–2013 | 1 | - | 23 | 0.08 | 39 | - |
| Chimpanzees | Ngogo | 1996–2014 | 8 | - | 72.3 (62–80) | 0.01 (0.00–0.01) | 7 (6–8) | - | |
| Chimpanzees | Kasakela | 1985–2011 | 16 | - | 20.7 (15–25) | 0.04 (-0.01–0.12) | 27 (16–41) | - |
a
values represent the average across all time periods for each group and the values in brackets indicate the range of values of all time periods for each group.