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Beisa oryx

Oryx beisa (Rüppell, 1835)
French: Oryx beisa
German: Beisa Spießbock
Swahili: Choroa, Bara bara

Subspecies
Oryx beisa beisa
Oryx beisa callotis

Description
Total length: 1.53 - 1.70 m
Tail length: 45 - 50 cm
Shoulder height: 110 - 120 cm
Weight: (m) 167-209 kg, (f) 116-188 kg
Gestation: 240 - 280 days

This large, muscular antelope has a thick neck. Both sexes carry long, almost straigh horns. The greyish body color is interrupted by black stripes on the sides. There are also distinctive white and black facial markings. The calves lack black markings, they are plain fawn.

Distribution
O. beisa beisa: Eritrea?, Ethiopia, Sudan?, (Somalia: former distribution)
O. beisa callotis: Ethiopia, Kenya

Ecology
This species inhabits arid open grasslands and bushland. They form mixed herds up to 30 animals in which the sexes are almost balanced in numbers.

Conservation Status

IUCN Red List Category, ver 3.1:

- http://www.iucnredlist.org/apps/redlist/details/15571/0

Trend:
Most remaining populations of Beisa Oryx occur outside protected areas (with only 17% of the population in Pas). The largest populations occur in the Awash N.P. in the Awash Valley and Omo-Mago-Muruie-Chew Bahir in Ethiopia and in Kenya.

European Collection Plan (2003): ...
RCP status: ...

Recommendations
More effective protection and management of the remaining populations in areas where the species still occurs in substantial numbers but its populations are in decline, such as the Awash Valley, Omo-Mago-Chew Bahir, northern Kenya and Tsavo, would greatly enhance the long-term survival prospects of this species. Populations of Beisa Oryx are maintained in captivity.

Literatur
Dorst J & Dandelot P (1970): Larger Mammals of Africa, Collins Field Guide, London.
East R (1999): African Antelope Databese 1998. IUCN/SSC Antelope Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.
Haltenorth T & Diller H (1977): Saeugetiere Afrikas und Madagaskars, BLV Verlagsgesellschaft, Muenchen. 
Kingdon J (1997): The Kingdon Field Guide To African Mammals, Academic Press, San Diego.
Wilson DE & Reeder DM (2005): Mammal species of the world. A taxonomic and geographic reference. Third Ed., Vol. 1 The John Hopkins University Press, Baltimore.

 

Links

- http://www.arkive.org/beisa-oryx/oryx-beisa/
- http://awwp.alwabra.com/index.php/content/view/1331/34/
- http://www.gisbau.uniroma1.it/amd/amd211b.html


 

Fringe-eared oryx

Oryx beisa callotis (Thomas, 1892)
French:
German:

Description
Total length: 1.53 - 1.70 m
Tail length: 45 - 50 cm
Shoulder height: 110 - 120 cm
Weight: (m) 167-209 kg, (f) 116-188 kg
Gestation: 240 - 280 days

Conservation Status

IUCN Red List Category, ver 3.1:

- http://www.iucnredlist.org/apps/redlist/details/15572/0

Trend:

Recommendations
None.

Beisa details ... (http://www.neaasg.org/index.php?id=337)


 

Beisa

Oryx beisa beisa (Rüppell, 1835)
F: Oryx beisa
G: Beisa-Spießbock, Beisa-Oryx

Other relevant subspecies
Oryx beisa callotis

Description
Total length: 1.53 - 1.70 m
Tail length: 45 - 50 cm
Shoulder height: 110 - 120 cm
Weight: (m) 167-209 kg, (f) 116-188 kg
Gestation: 240 - 280 days

Conservation Status

IUCN Red List Category, ver 3.1:

- http://www.iucnredlist.org/apps/redlist/details/136871/0

Trend:
Total population in Ehiopia at least reaches 4.000 - 5.000, with numbers generally in decline. It is a rare species in the Ogaden. The small population of Grand Gammareh in Djibouti is considered to be small and slightly increasing.

Recommendations
None.

Beisa details ... (http://www.neaasg.org/index.php?id=337)

Literature
Heckel J-O & Rayaleh HA (2008): Status of wild ungulates in Djibouti. Report in Woodfine T & Wacher T: Ninth Annual Sahelo-Saharan Interest Group meeting, 19-24. 
Wilhelmi F, Kaariye XY, Hammer S, Hammer C & Heckel J-O (2006): ON THE STATUS OF WILD UNGULATES IN THE OGADEN REGION OF ETHIOPIA. Proceedings of the seventh annual SSIG meeting, 43-62.

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