Main facts about Arabian oryx

The publications mentioned in the reference section are fully quoted in the Publications section. Direct links are provided for publications to which NWRC/NCWCD staff have contribued (for example Cribiu et al., 1989). they give access to to summaries and PDF file.

 

The morphological aspects of Arabian oryx
MORPHOLOGICAL ASPECTS NWRC Wild Reference
Colour coat at birth
brown
Flamand, 1994
Coat colour change to white (month)
3
Flamand, 1994
Body mass at birth (kg)
6.2 [2.5-8]
-
Flamand, 1994
Adult body mass
90 [67-113]
89 [62-124]
NWRC internal report
Body length (m)
1.95 [1.7-2.1]
1.90 [1.7-2.1]
NWRC internal report
Withers (m)
0.95 [0.86-1.0]
-
NWRC internal report
Maximal horn length (m)
0.78
0.82
NWRC internal report
Dental formula
1.0/3; c0/1; pm 3/3; m 3/3 = 32
Harrison, 1968

 

Reproduction
REPRODUCTION NWRC Wild Reference
Weaning (month)
6
3-8
Bedin, pers. com.
Sexual maturity (month)
13-18 females
7-12 males
3-8
Blanvillain et al. 1997
Ancrenaz et al. 1998
Calving Seasonality
Human managed
Aseasonal, with peak during winter
Strauss, 2002
Mean Gestation Period (day)
260±42
-
Vié, 1996
Mean Calving Interval (day)
295±42
300±36
Vié, 1996
Strauss, 2002
Sempéré et al., 1996
Young per Birth
1
1
Sempéré et al., 1996
Mean Oestrus Cycle Length (day)
23.7±1.3
-
Sempéré et al., 1996
Mean Testosterone Cycle Length in Males (days)
24.1±1.6
-
Ancrenaz et al., 1998

 

PHYSIOLOGY: ENERGETICS & WATER NEEDS
PHYSIOLOGY NWRC Wild Reference
Total Evaporative Water Loss (ml/day)
870 (at 30ºC)
-
Williams et al., 2001
Resting Metabolic Rate (kJ/day)
9,000 (at 30ºC)
-
Williams et al., 2001
Water Influx Rate (ml/day)
-
3,500/1,300-2,300
(Spring/Summer)
Williams et al., 2001
Ostrowski et al., 2002
Field Metabolic Rate (kJ/day)
-
22,000/11,000 (Spring/Summer)
Williams et al., 2001

 

LIFESTYLE
LIFESTYLE NWRC Wild Reference
Social Organization - Mixed hierarchical herd NWRC internal report
Mating System Pairs selected for genetic management Polygynous NWRC internal report
Habitat - Sand dunes and steppe desert  
Density (/km²) - <0.02 NWRC internal report
Main Predators None Human  
Diet Rhode grass hay ad lib., supplementation with lucerne hay and pellets Mixed-feeder predominantly grazer Tear, 1997, Spalton, 1995

Other information
Others NWRC Wild Reference
Karyotype
2n = 58 chromosomes
Cribiu et al., 1989
Life Span About 15 years (NWRC oldest living oryx born in 1980) - NWRC internal report
IUCN Status
Endangered. Criteria D
IUCN website
CITES Status
Appendix I
CITES website