Table 1.
Influence of reproductive synchrony and sharing of the same male partner on the probability of agonistic interactions received by oestrous females from pregnant/lactating females. (Parameters and tests are based on 2366 focal observations and 276 occurrences of aggressive interactions distributed among 50 initiators and 40 receivers. GLMMs control for focal observation identity, initiator and receiver identity (fitted as random factors). The confidence interval (CI) and p-value of statistically significant results are highlighted in italics. s.e., standard error; LRT, statistic of a likelihood ratio test; d.f., degrees of freedom.)
| response variable | fixed factor | levels | estimate | s.e. | 95% CI | LRT | d.f. | p-value |
|---|---|---|---|---|---|---|---|---|
| probability that oestrous females receive aggression from the female friends of a male (0/1), by female–female dyad | reproductive synchrony | −0.45 | 0.22 | (−0.89; −0.03) | 4.51 | 1 | 0.034 | |
| male sharing status | same male (ref: no male) | 0.75 | 0.18 | (0.40; 1.10) | 38.65 | 2 | <0.001 | |
| same male (ref: different male) | 1.46 | 0.24 | (0.99; 1.94) | |||||
| different male (ref: no male) | −0.70 | 0.20 | (−1.11; −0.32) | |||||
| spatial proximity | 0.24 | 0.07 | (0.08; 0.37) | 7.91 | 1 | 0.005 | ||
| rank initiator | 1.54 | 0.25 | (1.05; 2.07) | 29.63 | 1 | <0.001 | ||
| rank receiver | −1.06 | 0.21 | (−1.57; −0.69) | 25.64 | 1 | <0.001 | ||
| groupa | L | 0.57 | 0.27 | (0.03; 1.13) | 4.27 | 1 | 0.039 | |
| yearb | 2006 | 0.37 | 0.35 | (−0.30; 1.09) | 14.38 | 3 | 0.002 | |
| 2013 | −0.70 | 0.42 | (−1.54; 0.12) | |||||
| 2014 | 0.29 | 0.36 | (−0.43; 1.00) |
aReference category: J group.
bReference category: 2005.