Ecology of an endemic primate species (Macaca siberu) on Siberut Island, Indonesia

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Table 1 Comparison of Siberut’s sympatric primate species

	*S. concolor*	*P. potenziani*	*H. klossii*	*M. siberu*
Group size	2-12	2-8	2-6	29
Home range size	4-20	25-40	5-35	135
(100% MCP, ha)
Mean day range (m)	572	774	1,508^b	2,048^c
(range)	(189-1,200)^a	(427-1,400)^a	(885-2,150)	(1,054-3,360)^c
Diet (%)^d
Fruits	22.8	55.4 (32)	72.0	75.7
Flowers	17.8	5.1	0	0.2
Leaves	57.2	34.6 (55)	2.0	4.4
Arthropods	0.6^a	0.0	25.0	11.9
Other	1.7	4.8 (13)	0	7.8
Activity budget (%)
Travel/ move	6.2	6.9	11	57.3
Feed	30.8	35.3	34	10.1
Forage	2.4	4.9		12.1
Rest	55.4	50.8	54	14.6
Social	2.3	0.7	x	5.9
Other	2.8	1.4	2
Forest strata use (%)^e
0-10 m	13	14		64
11-20 m	58	52		17
21-30 m	28	33		12
>30 m	1	1		7

Diet expressed as percent feeding time.
^a from S. Hadi (pers. comm.), ^b median range not mean range from Whitten (1982c), ^c mean day range is monthly average for 10 months, range means minimum and maximum of all single “full day follows” during this period, ^d diet for P. potenziani from Hadi et al (2012), with values from Fuentes (1997) in brackets, ^e forest strata use for the three species was recorded at the same study site of the Siberut Conservation Programme, in the Peleonan Forest, North Siberut.
: Erb (Data sources: Simias concolor 2012), Erb et al (2012b), Hadi (2012), Hadi et al (2012) and Tenaza & Fuentes (1995: Fuentes (); Presbytis potenziani 1997), Hadi (2012) and Hadi et al (2012: Tenaza (); Hylobates klossii 1975), Tilson (1981), Whitten (1980), Whitten (1982a), Whitten (1982c); Macaca siberu: this study.