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Gerenuk

Northern gerenuk, male   Northern gerenuk, female Gerenuk ssp., Juvenile male 

Litocranius walleri (Brooke, 1879)
French: Gazelle de Waller
German: Giraffengazelle
Swahili: Swala twiga, Njonga

Endemic subspecies (not valid according to Wilson & Reeder, 2005)
Litocranius [walleri] sclateri Somali or Northern gerenuk
Litocranius [walleri] walleri Southern gerenuk


Description
Total length: 1.40 - 1.60 m
Tail length: 22 - 35 cm
Shoulder height: 80 - 120 cm
Weight: (m) 31 - 52 kg, (f) 28 - 45 kg
Gestation: ~203 days

This giraffe-like antelope with its very long legs and its long slender neck can easily be identified. The upperparts area rufous-fawn, while hte sides are paler. Rams carry distinctive horns.

Distribution
The species is restricted to the Horn of Africa and East Africa.
L. w. sclateri (if valid as a subspecies): S, SE Djibouti; NE Ethiopia; NW Somalia (Somaliland)
L. w. walleri (if valid as a subspecies): E, SE Ethiopia; C, S Somalia; N, NE, C Kenya

Ecology
Gerenuk are strict browsers, so their habitat depends on an abundance of bushes and small trees. Gerenuks are independent of drinking water. The species is resident and lives predominantly solitary, but small mixed groups are also common. Unlike the dibatag they do not make dung middens. Besides they differ most in the shape of their horns.

Conservation status

IUCN - Red List Category, ver 3.1:

- http://www.iucnredlist.org/apps/redlist/details/12142/0

Trend:
About 10% of the population is in protected areas. Important protected-area populations occur in areas such as Mago National Park in Ethiopia. Populations are tentatively assessed as stable in areas such as the Ogaden but may be decreasing in the more heavily hunted parts of its range. Recent reports suggest that the population of the Gerenuk is small but viable in Djibouti, if the hunting ban is maintained. The northern subspecies (L. w. sclateri) remains poorly represented in protected areas.

European Collection Plan: ...

RCP status: ...

Recommendations
If current trends continue, it may eventually disappear from large parts of its present distribution until it is largely restricted to effectively protected and managed areas of suitable habitat. Such areas currently comprise only parts of its remaining range.

Literature
Backhaus D (1960): Eine vermutete Anpassung der Giraffengazelle (Litocranius walleri Brooke 1879) an Troekengebiete. Die Naturwissenschaften, 166-167.
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.
Grubb P (2002): Types, type locality and subspecies of the gerenuk Litocranius walleri (Artiodactyla: Bovidae). Journal of zoology, 257: 539-543.
Haltenorth T & Diller H (1977): Saeugetiere Afrikas und Madagaskars, BLV Verlagsgesellschaft, Muenchen. 
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. 
Kingdon J (1997): The Kingdon Field Guide To African Mammals, Academic Press, San Diego.
Laurent A & Laurent D (2002): Djibouti - Les mammifères d'híer à aujrd'hui por demain. Ed. BEIRA. CFP. Toulouse.
Schober HW (1966): Giraffengazellen und Lamagazellen. Die neue Brehm-Bücherei, A. Ziemsen Verlag, Wittenberg Lutherstadt.
Stuart C & Stuart T (2000): Field guide to larger mammals of Africa. Struik Publishers, Cape Town.
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.
Wilson DE & Reeder DM (2005): Mammal species of the world. A taxonomic and geographic reference. Third Ed., Vol. 1 The John Hopkins University Press, Balitmore.

 

Links

- http://www.ultimateungulate.com/Artiodactyla/Litocranius_walleri.html
- http://www.arkive.org/gerenuk/litocranius-walleri/
- http://awwp.alwabra.com/index.php/content/view/15/34/
- http://www.stlzoo.org/animals/abouttheanimals/mammals/hoofedmammals/gerenuk.htm
- http://www.gisbau.uniroma1.it/amd/amd178b.html


 

Northern gerenuk

Northern gerenuk, male  Northern gerenuk, female  Northern gerenuk, herd 
     

Litocranius [walleri] sclateri Neumann, 1899
French:
German:

Description
Total length: 1.40 - 1.60 m

Tail length: 22 - 35 cm
Shoulder height: 80 - 120 cm
Weight: (m) 31 - 52 kg, (f) 28 - 45 kg
Gestation: ~203 days

Conservation Status

IUCN Red List Category, ver 3.1:

- http://www.iucnredlist.org/apps/redlist/details/12142/0

Trend: ?
It remains poorly represented in protected areas. Recent reports suggest that the population of the Gerenuk is small but viable in Djibouti, if the hunting ban is maintained

Recommendations
Due to the dependency of gerenuks on Acacia trees near to water the intactness of these trees is crucial for the survival of the gerenuks in Djibouti.

Gerenuk details ... (http://www.neaasg.org/index.php?id=309)

Literature
East R (1999): African Antelope Databese 1998. IUCN/SSC Antelope Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.
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. 
Laurent A & Laurent D (2002): Djibouti - Les mammifères d'híer à aujrd'hui por demain. Ed. BEIRA. CFP. Toulouse.

 


 

Sourthern gerenuk

Male  Southern gerenuk, female  Southern gerenuk, group 
   Gerenuk ssp., female  

Litocranius [walleri] walleri Brooke, 1878
French:
German:

 

Description
Total length: 1.40 - 1.60 m

Tail length: 22 - 35 cm
Shoulder height: 80 - 120 cm
Weight: (m) 31 - 52 kg, (f) 28 - 45 kg
Gestation: ~203 days

 

Conservation Status

 

IUCN Red List Category, ver 3.1:

 

- http://www.iucnredlist.org/apps/redlist/details/12142/0

 

Trend: ?

 

Recommendations

 


 

Literature
East R (1999): African Antelope Databese 1998. IUCN/SSC Antelope Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.


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