Table 1. Summary of the most important socio-ecological traits of the seven non-human primate species discussed in the present study.
| Species |
N (present study) |
ECV (cc) | % fruit | dietary breadth | social system | average group size | |
|---|---|---|---|---|---|---|---|
|
chimpanzees (Pan troglodytes) |
106 | 368.4 | 66 | 6 | group | 47.6 | |
|
orangutans (Pongo pygmaeus) |
32 | 377.4 | 64 | 6 | solitary | 1.5 | |
|
olive baboons (Papio anubis) |
5 | 167.4 | 62 | 6 | group | 69 | |
|
long-tailed macaques (Macaca fascicularis) |
10-13 | 64 | 66.9 | 5 | group | 26 | |
|
ruffed lemurs (Varecia variegata) |
13 | 32.1 | 92 | 4 | group | 24 | |
|
ring-tailed lemurs (Lemur catta) |
26-27 | 22.9 | 54 | 5 | group | 14 | |
|
grey mouse lemurs (Microcebus murinus) |
9-16 | 1.6 | 31.3 | 4 | solitary | 1 |
Notes.
- n
- number of individuals
- ECV
- endocranial volume (absolute brain size)
- % fruit
- percentage of fruit in the diet