Animalia > Chordata > Mammalia > Artiodactyla > Bovidae > Addax > Addax nasomaculatus

Addax nasomaculatus (addax)

Wikipedia Abstract

The addax (Addax nasomaculatus), also known as the white antelope and the screwhorn antelope, is an antelope of the genus Addax, that lives in the Sahara desert. It was first described by Henri de Blainville in 1816. As suggested by its alternative name, this pale antelope has long, twisted horns - typically 55 to 80 cm (22 to 31 in) in females and 70 to 85 cm (28 to 33 in) in males. Males stand from 105 to 115 cm (41 to 45 in) at the shoulder, with females at 95 to 110 cm (37 to 43 in). They are sexually dimorphic, as the females are smaller than males. The colour of the coat depends on the season - in the winter, it is greyish-brown with white hindquarters and legs, and long, brown hair on the head, neck, and shoulders; in the summer, the coat turns almost completely white or sandy blond
View Wikipedia Record: Addax nasomaculatus

Endangered Species

Status: Critically Endangered
View IUCN Record: Addax nasomaculatus

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 7.92
EDGE Score: 4.96


Adult Weight [1]  206.13 lbs (93.50 kg)
Birth Weight [2]  12.35 lbs (5.60 kg)
Female Weight [1]  165.35 lbs (75.00 kg)
Male Weight [1]  246.92 lbs (112.00 kg)
Weight Dimorphism [1]  49.3 %
Female Maturity [2]  2 years 11 months
Diet [3]  Herbivore
Diet - Plants [3]  100 %
Forages - Ground [3]  100 %
Gestation [2]  9 months 12 days
Litter Size [2]  1
Litters / Year [2]  1
Maximum Longevity [2]  28 years
Migration [4]  Intracontinental
Nocturnal [3]  Yes
Weaning [2]  6 months 18 days


Name Countries Ecozone Biome Species Report Climate Land
North Saharan steppe and woodlands Egypt, Libya, Algeria, Tunisia, Morocco, Western Sahara, Mauritania Palearctic Deserts and Xeric Shrublands
Sahara desert Egypt, Sudan, Libya, Algeria, Mauritania, Mali, Chad, Niger Palearctic Deserts and Xeric Shrublands
South Saharan steppe and woodlands Mauritania, Mali, Algeria, Niger, Chad, Sudan Palearctic Deserts and Xeric Shrublands
Tibesti-Jebel Uweinat montane xeric woodlands Chad, Libya Palearctic Deserts and Xeric Shrublands
West Saharan montane xeric woodlands Algeria, Niger, Mali, Mauritania Palearctic Deserts and Xeric Shrublands

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Azraq Wetland Reserve IV   Jordan
Souss-Massa National Park 132969 Morocco  
Tassili N'Ajjer National Park II 24545308 Algeria  
Termit et de Tin Toumma National Nature Reserve 23969222 Niger      


Acinonyx jubatus (Cheetah)[1]
Caracal caracal (Caracal)[1]
Crocuta crocuta (Spotted Hyena)[1]
Leptailurus serval (Serval)[1]
Lycaon pictus (African wild dog)[1]
Panthera leo (Lion)[1]
Panthera pardus (Leopard)[1]


Parasitized by 
Haemonchus contortus (red stomach worm)[5]
Longistrongylus curvispiculum[5]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Africa Alive!
Al Ain Zoo
Al Bustan Zoological Center
Al-Wabra Wildlife Preservation
Bird Park Marlow
Buffalo Zoological Gardens
Chicago Zoological Park
Dallas Zoo
Emerald Safari Resort
Flamingo Land LTD
Fossil Rim Wildlife Center
Fresno Chaffee Zoo
Fundacao Parque Zoologico de Sao Paulo
Giza Zoological Garden
Gladys Porter Zoo
Greater Vancouver Zoo
Jardim Zoologico / Lisbon Zoo
Kolmardens Djurpark AB
Lee Richardson Zoo
Lichtenburg Game Breeding Center
Louisiana Purchase Gardens & Zoo
Louisville Zoological Garden
Marwell Wildlife
Miami Metrozoo
Monarto Zoological Park
Mountain View Conservation & Breeding
Mulhouse Zoo
Nat'l Zoological Gardens of S. Africa
Nyíregyházi Állatpark Nonprofit KFT
Ogrod Zoologiczny w Opolu, Opole
Omaha's Henry Doorly Zoo
Out of Africa Wildlife Park
Parc de la Haute Touche (MNHN)
Parc de Lunaret
Parc Safari / F.A.P.S.
Park i Ogrod Zoologiczny w Krakowie
Parque de la Naturaleza de Cabarceno
Planete Sauvage
Rolling Hills Wildlife Adventure
Rome Zoo-Fondazione Bioparco di Roma
Rotterdam Zoo
Sacramento Zoo
Safari de Peaugres
Safari West
Saint Louis Zoological Park
San Antonio Zoological Gardens & Aquar
San Diego Wild Animal Park
Silesian Zoological Garden
Taipei Zoo
The Living Desert Zoo and Gardens
The Philadelphia Zoo
The Tisch Family Zoological Gardens
Tiergarten der Stadt Nürnberg
Tierpark Berlin-Friedrichsfelde GmbH
Usti nad Labem Zoo
Valley Zoo & John Janzen Nature Center
Werribee Open Range Zoo
West Midland Safari & Leisure Park Ltd
Western Plains Zoo
Wildlife World Zoo
Wilhelma Zoo
Woburn Safari Park
Yorkshire Wildlife Park
Zagreb Zoo / Zooloski vrt Zagreb
Zoo Dvur Kralove, a.s.
Zoo Hannover GmbH
Zoo of Acadiana
Zoological Center Tel Aviv - Ramat Gan
Zoological Garden Prague
Zoologicka Garden & Chateau Zlin-Lesna
Zoologicka Zahrada Bratislava
Zoologicka Zahrada Mesta Brna
Zoologicka zahrada Olomouc
Zoologická zahrada Hodonín

Range Map




Attributes / relations provided by
1Addax nasomaculatus, Paul R. Krausman and Anne L. Casey, MAMMALIAN SPECIES No. 807, pp. 1-4 (2007)
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
5Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Protected Areas provided by Biological Inventories of the World's Protected Areas in cooperation between the Information Center for the Environment at the University of California, Davis and numerous collaborators.
Le Saout, S., Hoffmann, M., Shi, Y., Hughes, A., Bernard, C., Brooks, T.M., Bertzky, B., Butchart, S.H.M., Stuart, S.N., Badman, T. & Rodrigues, A.S.L. (2013) Protected areas and effective biodiversity conservation. Science, 342, 803–805
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Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access