Table III.

Degree of male reproductive skew in three groups of crested macaques at Tangkoko Reserve, Indonesia, 2007–2009

Group and year	Number of potential group sires	Number of group sires	Number of adult females	Number of determined paternities	Proportion of alpha-male paternity (%)	Proportion of alpha-male tenure across the year (%)	Observed B index	P level	Lower confidence interval	Upper confidence interval
R1 2007	15	4	20	9	55.56	73.15	0.179	0.001	0.033	0.455
R1 2008	20	2	21	3	33.33	73.42	0.139	0.165	−0.303	0.562
R1 2009	21	5	25	7	28.57	97.26	0.021	0.250	−0.133	0.289
R2 2007	14	3	18	9	77.78	18.38	0.527	0.000	0.192	0.865
R2 2008	7	1	19	7	100.00	100.00	0.672	0.000	0.214	0.672
R2 2009	10	1	20	9	100.00	100.00	0.621	0.000	0.251	0.621
PB 2009	16	3	17	7	57.14	31.51	0.153	0.016	0.016	0.506
Mean	14.7	2.7	20.0	7.3	64.63	70.53	0.330
SD	5.0	1.5	2.6	2.1	29.14	33.44	0.267

We provide the number of potential group sires, number of group sires, number of adult females, number of determined paternities, proportion of alpha-male paternity, proportion of alpha-male tenure across the year, the observed B value, the lower and upper confidence interval (each 0.95%) together with the P value that the observed B value is due to chance (significant values in bold). The B index incorporates male residency in days per group and year. This analysis includes a total of 51 offspring.