Table 3.
Individual copulation frequencies and copulation success of females (relative swelling size >50%)
| Female | Sex | OMU | Sex ratio (females in OMU) | Observed number of copulations (decided copulations) | Copulations/h | Proportion of successful copulations (%) |
|---|---|---|---|---|---|---|
| Af1 | f | A | 2 | 153 (81) | 3.08 | 71.6 |
| Af2a | f | A | 2 | |||
| Bf1 | f | B | 2 | 103 (50) | 2.37 | 48.0 |
| Bf2 | f | B | 2 | 61 (48) | 5.25 | 70.8 |
| Cf1 | f | C | 3 | 10 (7) | 0.52 | 42.9 |
| Cf2 | f | C | 3 | 36 (25) | 1.42 | 60.0 |
| Cf3 | f | C | 3 | 80 (51) | 1.65 | 49.0 |
| Df1b | f | D | 6 | 48 (23) | 2.50 | 52.2 |
| Df2 | f | D | 6 | 59 (20) | 2.72 | 15.0 |
| Df3b | f | D | 6 | 35 (23) | 1.69 | 30.4 |
| Df4a | f | D | 6 | |||
| Df5a | f | D | 6 | |||
| Df6b | f | D | 6 | 29 (19) | 1.00 | 5.3 |
Because females were the focus of the study, we could not calculate the copulation rate for males
aFemales which did not show any sign of a swelling, because of pregnancy or lactational amenorrhea. They were excluded from the analysis
bFemales which experienced extra-group copulation