Angolan giraffe

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Angolan giraffe
Giraffa camelopardalis angolensis.jpg
An individual in the savannahs of Etosha National Park, Namibia.
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Giraffidae
Genus: Giraffa
Species:
Subspecies:
G. c. angolensis
Trinomial name
Giraffa camelopardalis angolensis
Lydekker, 1903
Giraffa camelopardis distribution 2018.png
Range in maroon

The Angolan giraffe (Giraffa angolensis [2] or Giraffa camelopardalis angolensis or Giraffa giraffa angolensis), also known as the Namibian giraffe or smokey giraffe, is a species or subspecies of giraffe that is found in northern Namibia, south-western Zambia, Botswana, western Zimbabwe and since mid-2023 again in Angola. [3]

Contents

Taxonomy

A 2009 genetic study on this subspecies suggests the northern Namib Desert and Etosha National Park populations each form a separate subspecies. However, genetic studies based on mitochondrial DNA do not support the division into two subspecies., [4] [5] but could identify giraffes in southern Zimbabwe as the Angolan giraffe, suggesting a further eastward distribution than expected. [5]

Description

This subspecies has large brown blotches with edges that are either somewhat notched or have angular extensions. The spotting pattern extends throughout the legs but not the upper part of the face. The neck and rump patches tend to be fairly small. The subspecies also has a white ear patch.

Habitat

Home range size of Angolan giraffes was found to be larger in unproductive areas such as the Namib Desert and much smaller in more productive areas such as Lake Manyara National Park. [6] However, that home range size could be affected by abiotic(e.g climate), biotic(e.g forage availability, predator densities) and human influence(e.g population growth) [7]

Seasonal movement

As far as seasonal movements of giraffes were concerned, they were not as distinctive as those in other giraffe populations around the world. Male giraffe moves longer than female giraffe and also it has longer average daily movement (5.64km compared to 1.87km in 180 days during hot-dry season). [8]

Foraged activity

Angolan Giraffe tends to forage into the mountain during the cold-dry and early hot-dry season. It mainly eats Commiphora for living. [9]

Conservation

Approximately 13,000 animals are estimated to remain in the wild; [10] and about 20 are kept in zoos.

Related Research Articles

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<span class="mw-page-title-main">Etosha National Park</span> National park of Namibia

Etosha National Park is a national park in northwestern Namibia and one of the largest national parks in Africa. It was proclaimed a game reserve in March 1907 in Ordinance 88 by the Governor of German South West Africa, Friedrich von Lindequist. It was designated as Wildschutzgebiet in 1958, and was awarded the status of national park in 1967, an act of parliament of the Republic of South Africa. It spans an area of 22,270 km2 (8,600 sq mi) and was named after the large Etosha pan which is almost entirely within the park. With an area of 4,760 km2 (1,840 sq mi), the Etosha pan covers 23% of the total area of the national park. The area is home to hundreds of species of mammals, birds and reptiles, including several threatened and endangered species such as the black rhinoceros. Sixty-one black rhinoceros were killed during poaching in Namibia during 2022, 46 of which were killed in Etosha.

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References

  1. Marais, A.; Fennessy, J.; Fennessy, S.; Brand, R.; Carter, K. (2020). "Angolan Giraffe". IUCN Red List of Threatened Species . 2020: e.T88420726A176393590. doi: 10.2305/IUCN.UK.2020-3.RLTS.T88420726A176393590.en .
  2. Groves, Colin; Grubb, Peter (2011). Ungulate Taxonomy. JHU Press. pp. 68–70. ISBN   9781421400938.
  3. For the first time in decades, Angolan giraffes now populate a park in Angola, Megan Lim, NPR, 2023-07-11
  4. Brown, David M; Brenneman, Rick A; Koepfli, Klaus-Peter; Pollinger, John P; Milá, Borja; Georgiadis, Nicholas J; Louis, Edward E; Grether, Gregory F; Jacobs, David K (2007). "Extensive population genetic structure in the giraffe". BMC Biology. 5 (1): 57. doi: 10.1186/1741-7007-5-57 . ISSN   1741-7007. PMC   2254591 . PMID   18154651.
  5. 1 2 Winter, Sven; Fennessy, Julian; Fennessy, Stephanie; Janke, Axel (2018). "Matrilineal population structure and distribution of the Angolan giraffe in the Namib desert and beyond". Ecological Genetics and Genomics. 7–8: 1–5. doi:10.1016/j.egg.2018.03.003. ISSN   2405-9854. S2CID   90395544.
  6. Flanagan, S. E.; Brown, M. B.; Fennessy, J.; Bolger, D. T. (2016). "Use of home range behaviour to assess establishment in translocated giraffes". African Journal of Ecology. 54 (3): 365–374. doi:10.1111/aje.12299.
  7. Fennessy, Julian (September 2009). "Home range and seasonal movements of Giraffa camelopardalis angolensis in the northern Namib Desert". African Journal of Ecology. 47 (3): 318–327. doi:10.1111/j.1365-2028.2008.00963.x.
  8. Fennessy, Julian (September 2009). "Home range and seasonal movements of Giraffa camelopardalis angolensis in the northern Namib Desert". African Journal of Ecology. 47 (3): 318–327. doi:10.1111/j.1365-2028.2008.00963.x.
  9. Fennessy, Julian (September 2009). "Home range and seasonal movements of Giraffa camelopardalis angolensis in the northern Namib Desert". African Journal of Ecology. 47 (3): 318–327. doi:10.1111/j.1365-2028.2008.00963.x.
  10. Fennessy, Julian; Bidon, Tobias; Reuss, Friederike; Kumar, Vikas; Elkan, Paul; Nilsson, Maria A.; Vamberger, Melita; Fritz, Uwe; Janke, Axel (2016). "Multi-locus Analyses Reveal Four Giraffe Species Instead of One". Current Biology. 26 (18): 2543–2549. doi: 10.1016/j.cub.2016.07.036 . ISSN   0960-9822. PMID   27618261.