Table 4.
Sexual dimorphism values (male/female) and means by sex for adult vervet samples for six of 12 variables used in the study. Bold italic values differ significantly between males and females of the same sample. Non-significant values for Mosiro may be due to small sample sizes. Weight is in kg, and all other dimensions are in mm.
| Naivasha | Mosiro | Kimana | Samburu | |
|---|---|---|---|---|
| elevation (m) | highland >2000 |
highland 1000–1500 |
lowland 750–1000 |
lowland 600–650 |
| rainfall (mm) | >600 | 400–600 | 200–400 | 350–400 |
| vegetation | lakeside grassland | heavily grazed woodland and savannah | dry grassland and thorn scrub | dry grassland and thorn scrub |
| resource base | cultivated crops abundant | no cultivated crops | some cultivated crops available | no cultivated crops |
| weight | ||||
| sex dimorphism | 1.48 | 1.5 | 1.34 | 1.58 |
| male mean | 4.9 | 4.2 | 4.3 | 4.1 |
| female mean | 3.3 | 2.8 | 3.2 | 2.6 |
| body length | ||||
| sex dimorphism | 1.13 | 1.17 | 1.10 | 1.15 |
| male mean | 43.5 | 42 | 42.6 | 39.8 |
| female mean | 38.6 | 36 | 38.7 | 34.5 |
| chest girth | ||||
| sex dimorphism | 1.15 | 1.16 | 1.12 | 1.18 |
| male mean | 35.7 | 33.9 | 32.7 | 32.7 |
| female mean | 31.1 | 29.1 | 29.1 | 27.8 |
| upper arm length | ||||
| sex dimorphism | 1.11 | 1.2 | 1.14 | 1.18 |
| male mean | 14.5 | 15 | 13.8 | 14.6 |
| female mean | 13.1 | 12.5 | 12.1 | 12.4 |
| leg (thigh) length | ||||
| sex dimorphism | 1.15 | 1.17 | 1.16 | 1.21 |
| male mean | 16.9 | 16.4 | 15.7 | 16.5 |
| female mean | 14.7 | 14 | 13.5 | 13.6 |
| tail length | ||||
| sex dimorphism | 1.17 | 1.2 | 1.07 | 1.21 |
| male mean | 61.8 | 64.8 | 58 | 67 |
| female mean | 52.6 | 54.1 | 54.2 | 55.2 |