CONSERVATION OF ARABIAN GAZELLES - Nwrc.gov.sa

4 4
*
4
3
2 *33 1 1
* 1 *
2 1
1 I
5
* 5
5
Figure 2.3c
Figure 2.3 Discriminant Function analysis of skull and hom measurements of the G. gazelia group . In all
comparisons. abscissa is Function 1, ordinate is Function 2 a) Skull and b) hom measurements of males; c)
skull measurements of females. I = gazelia, 2 = cora, 3 = erlangeri, 4 = bilkis, 5 = idmi from KKWRC,
Thumarnah.
Measurements of C. dorcas isabella, a species that may occur within the Kingdom (see
below), are given in Table 2.3. The skull is strikingly similar metrically to that of C. gazella cora.
Table 2.3 Skulllhom measurements of G. dorcas isabella.
Variable Male Female
n=26 n=1I
Mean s.d. Mean s.d.
Horn length, straight 218.1 16.61 \73.1 11 .04
Tip·to-tip (ditto) 84.2 25.43 87.4 24.92
Greatest span across horns (ditto) 138.2 19.11 109.4 23. 16
Greatest width across bases of horn 61.5 2.30 53.0 1.94
Width of nasal bones (a nterior) 20.1 1. 69 18.9 1.01
Width of nasal bones (posterior) 20.4 2.34 19.7 1.68
Greatest length of nasal bones 45.2 3.46 45.8 3.73
Greatest skull length 179.7 4.41 173.8 3.90
Greatest skull breadth (biorbital) 80.5 2.53 76.4 1.74
Preorbital skull length 90.3 2.77 89.6 2.35
Palate width (outside molars) 45.9 1.1 8 44.9 0.93
Braincase width 58.5 2.05 56.0 1.32
Braincase length (nasion to inion) 100.7 3.53 93.2 2.77
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