Grant's zebra

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Grant's zebra
Equus quagga.jpg
At the Hell's Gate National Park, Kenya
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Genus: Equus
Species:
Subspecies:
E. q. boehmi
Trinomial name
Equus quagga boehmi
Matschie, 1892
Synonyms

Equus quagga zambeziensis
(Prazak, 1898)

Grant's zebra (Equus quagga boehmi) is the smallest of the seven subspecies of the plains zebra. This subspecies represents the zebra form of the Serengeti-Mara ecosystem and others across central Africa.

Contents

Distribution

Female with foal, resting, Serengeti, Tanzania Grant's Zebras, resting, Serengeti.jpg
Female with foal, resting, Serengeti, Tanzania

This subspecies is distributed in Zambia west of the Luangwa river west to Kariba, Katanga Province of the Democratic Republic of the Congo, north to the Kibanzao Plateau, and in Tanzania north from Nyangaui and Kibwezi into southwestern Kenya as far as Sotik. It can also be found in eastern Kenya and east of the Great Rift Valley into southernmost Ethiopia. It occurs as far as the Juba River in Somalia.

Upper Zambezi zebra

Duncan (1992) [1] recognized the Upper Zambezi zebra (Equus quagga zambeziensis Prazak, 1898 [2] ). Groves and Bell (2004) [3] came to the conclusion that the zebras from West Zambia and Malawi cannot be distinguished cranially and that they differ only slightly from other northern plains zebras. The minor size difference does not justify a separate subspecific status for the Upper Zambezi zebra. Therefore, they combine these zebras with Grant's zebra (Equus quagga boehmi).

Characteristics

Grant's zebra at Safari Wilderness in Lakeland, Florida Grant's Zebra Lakeland, Florida.jpg
Grant’s zebra at Safari Wilderness in Lakeland, Florida

This northern subspecies is vertically striped in front, horizontally on the back legs, and diagonally on the rump and hind flanks. Shadow stripes are absent or only poorly expressed. The stripes, as well as the inner spaces, are broad and well defined. Northerly specimens may lack a mane. Grant’s zebras grow to be about 182 to 243 cm (6–8 ft) long and 120 to 140 cm (3.9 to 4.6 ft) tall, and generally weigh about 300 kg (660 lb). [4] The zebras live in family groups of up to 18 led by a single stallion. [5] Grant’s zebras typically live 20 years.

Regional extirpations

Recent civil wars in the Congo, Rwanda, Somalia, Sudan, Ethiopia, and Uganda have caused dramatic declines in all wildlife populations, including those of Grant’s zebra.[ citation needed ] It is now extirpated from Burundi. Civil war in Angola during much of the past 25 years has devastated its wildlife populations, including its once-abundant plains zebra, and destroyed the national parks administration and infrastructure. Consequently, Grant's zebra is probably extinct or nearly so in Angola, although confirmation will have to wait until future surveys are conducted.

More Grant’s zebras are in the wild than any other species or subspecies of zebras. Unlike Grevy and mountain zebras, they are not endangered. [6] Grant’s zebras eat the coarse grasses that grow on the African plains, and they are resistant to diseases that often kill cattle, [5] so the zebras do well in the African savannas. However, recent civil wars and political conflicts in the African countries near their habitats has caused regional extinction, and sometimes zebras are killed for their coats, or to eliminate competition with domestic livestock. [4]

Controversial Burchell's zebra introductions in Grant's zebra historical range

From 2001 until 2016 the Kissama Foundation reintroduced wildlife in the Kissama National Park in Angola. The project was  dubbed Operation Noah's Ark. Amongst the animals, such as blue wildebeest, waterbuck, Cape giraffe, bush elephants, oryx gemsbok, Livingstone eland, nyala and ostrich, were Burchell's zebras. [7] [8] And from 2017 until 2019 Wildlifevetsnamibia exported wildlife to the Democratic Republic of the Congo's capital city Kinshasa to introduce animals in Parc de la Vallée de la Nsele in partnership with Institut Congolais pour la Conservation de la Nature [9] Amongst the animals were golden oryx gemsbok, impala, blue wildebeest, Kafue lechwe, nyala, blesbok, red hartebeest, southern white rhino, Angolan giraffe, bush elephants and Burchell's zebras. Both introductions are controversial since the park service bodies from both countries did not opt to obtain the native Grant's zebra from for example countries as Zambia, Tanzania or Kenya.

In northwest and northeast Angola the Grant's zebra has been extirpated. But a small population remains in the DRC's Upemba National Park. The DRC thus now has populations of two different subspecies.

Habitat

These animals prefer savanna woodlands and grasslands; they are not found in deserts, wetlands, or rainforests. The mountain variety lives in rocky mountainous areas. The availability of habitat for all species of zebras is shrinking, resulting in population decline.[ citation needed ]

Diet

Zebras are exclusively herbivorous. Their diet is almost entirely made up of grasses, but they also eat leaves, bark, shrubs, and more.

Like all members of the horse family, zebras spend more time feeding than ruminant herbivores, such as antelope and wildebeest do. This is because horses, including zebras, do not chew their cud. Instead the cellulose in their food is broken down in their caecum. This is not as efficient as the method used by ruminants but is more effective at breaking down coarse vegetation. Hence although zebras must feed for longer each day than antelope and wildebeest do, they can consume grasses and other plants with higher fibre content or lower protein levels than ruminants can digest. [10]

Behavior

Grant's zebras, like many other zebras, are highly social creatures. They can frequently change herd structure, and will change companions every few months. [11]

Reproduction

Female zebras can have one foal per year. Their gestation period is around 360–395 days long, depending on the species. The mother will protect her foal, and it can stand, walk, and run shortly after birth. This is especially important, as foals are vulnerable to predators. Foals will nurse from their mother for up to one year before being weaned.[ citation needed ]

Related Research Articles

<span class="mw-page-title-main">Equidae</span> Family of hoofed mammals

Equidae is the taxonomic family of horses and related animals, including the extant horses, asses, and zebras, and many other species known only from fossils. The family evolved around 50 million years ago from a small, multi-toed ungulate into larger, single-toed animals. All extant species are in the genus Equus, which originated in North America. Equidae belongs to the order Perissodactyla, which includes the extant tapirs and rhinoceros, and several extinct families. It is more specifically grouped within the superfamily Equoidea, the only other family being the extinct Palaeotheriidae.

<span class="mw-page-title-main">Quagga</span> Extinct subspecies of plains zebra from South Africa and Namibia

The quagga is an extinct subspecies of the plains zebra that was endemic to South Africa until it was hunted to extinction in the late 19th century. It was long thought to be a distinct species, but early genetic studies have supported it being a subspecies of plains zebra. A more recent study suggested that it was the southernmost cline or ecotype of the species.

<span class="mw-page-title-main">Serengeti</span> Geographical region in Tanzania

The Serengeti ecosystem is a geographical region in Africa, spanning the Mara and Arusha Regions of Tanzania. The protected area within the region includes approximately 30,000 km2 (12,000 sq mi) of land, including the Serengeti National Park and several game reserves. The Serengeti hosts the world's most massive land animal migration, which helps secure it as one of the Seven Natural Wonders of Africa.

<span class="mw-page-title-main">Zebra</span> Black-and-white striped animals in the equid family

Zebras are African equines with distinctive black-and-white striped coats. There are three living species: Grévy's zebra, the plains zebra, and the mountain zebra. Zebras share the genus Equus with horses and asses, the three groups being the only living members of the family Equidae. Zebra stripes come in different patterns, unique to each individual. Several theories have been proposed for the function of these patterns, with most evidence supporting them as a deterrent for biting flies. Zebras inhabit eastern and southern Africa and can be found in a variety of habitats such as savannahs, grasslands, woodlands, shrublands, and mountainous areas.

<span class="mw-page-title-main">Onager</span> Species of mammal

The onager (Equus hemionus), also known as hemione or Asiatic wild ass, is a species of the family Equidae native to Asia. A member of the subgenus Asinus, the onager was described and given its binomial name by German zoologist Peter Simon Pallas in 1775. Six subspecies have been recognized, two of which are extinct.

<span class="mw-page-title-main">Plains zebra</span> Species of zebra

The plains zebra is the most common and geographically widespread species of zebra. Its range is fragmented, but spans much of southern and eastern Africa south of the Sahara. Six or seven subspecies have been recognised, including the extinct quagga which was thought to be a separate species. More recent research supports variations in zebra populations being clines rather than subspecies.

<span class="mw-page-title-main">Mountain zebra</span> Species of zebra

The mountain zebra is a zebra species in the family Equidae, native to southwestern Africa. There are two subspecies, the Cape mountain zebra found in South Africa and Hartmann's mountain zebra found in south-western Angola and Namibia.

<span class="mw-page-title-main">Zebroid</span> Offspring of a zebra and any other equine

A zebroid is the offspring of any cross between a zebra and any other equine to create a hybrid. In most cases, the sire is a zebra stallion. The offspring of a donkey sire and zebra dam, called a donkra, and the offspring of a horse sire and a zebra dam, called a hebra, do exist, but are rare and are usually sterile. Zebroids have been bred since the 19th century. Charles Darwin noted several zebra hybrids in his works.

<i>Equus</i> (genus) Genus of mammals which includes horses, donkeys, and zebras

Equus is a genus of mammals in the family Equidae, which includes horses, asses, and zebras. Within the Equidae, Equus is the only recognized extant genus, comprising seven living species. Like Equidae more broadly, Equus has numerous extinct species known only from fossils. The genus originated in North America and dispersed into the Old World and South America during the Early and Middle Pleistocene. Equines are odd-toed ungulates with slender legs, long heads, relatively long necks, manes, and long tails. All species are herbivorous, and mostly grazers, with simpler digestive systems than ruminants but able to subsist on lower-quality vegetation.

<span class="mw-page-title-main">Ngorongoro Conservation Area</span> Protected area and a World Heritage Site in Arusha Region, Tanzania

Ngorongoro Conservation Area is a protected area and a UNESCO World Heritage Site located in Ngorongoro District, 180 km (110 mi) west of Arusha City in Arusha Region, within the Crater Highlands geological area of northeastern Tanzania. The area is named after Ngorongoro Crater, a large volcanic caldera within the area. The Ngorongoro Conservation Area Authority administers the conservation area, an arm of the Tanzanian government, and its boundaries follow the boundary of the Ngorongoro District in Arusha Region. The western portion of the park abuts the Serengeti National Park, and the area comprising the two parks and Kenya's Maasai Mara game reserve is home to Great Migration, a massive annual migration of millions of wildebeest, zebras, gazelles, and other animals. The conservation area also contains Olduvai Gorge, one of the most important paleoanthropological sites in the world.

<span class="mw-page-title-main">Grévy's zebra</span> Species of zebra

Grévy's zebra, also known as the imperial zebra, is the largest living wild equid and the most threatened of the three species of zebra, the other two being the plains zebra and the mountain zebra. Named after Jules Grévy, it is found in parts of Kenya and Ethiopia. Superficially, Grévy's zebras' physical features can help to identify it from the other zebra species; their overall appearance is slightly closer to that of a mule, compared to the more "equine" (horse) appearance of the plains and mountain zebras. Compared to other zebra species, Grévy's are the tallest; they have mule-like, larger ears, and have the tightest stripes of all zebras. They have distinctively erect manes, and more slender snouts.

<span class="mw-page-title-main">Burchell's zebra</span> Subspecies of zebra

Burchell's zebra is a southern subspecies of the plains zebra. It is named after the British explorer and naturalist William John Burchell. Common names include bontequagga, Damaraland zebra, and Zululand zebra. Burchell's zebra is the only subspecies of zebra which may be legally farmed for human consumption.

<span class="mw-page-title-main">Somali wild ass</span> Subspecies of African wild ass

The Somali wild ass is a subspecies of the African wild ass.

<span class="mw-page-title-main">Quagga Project</span> Attempt to breed a zebra resembling an extinct quagga

The Quagga Project is an attempt by a group in South Africa to use selective breeding to achieve a breeding lineage of Burchell's zebra which visually resemble the extinct quagga.

<span class="mw-page-title-main">Blue wildebeest</span> Species of antelope

The blue wildebeest, also called the common wildebeest, white-bearded gnu or brindled gnu, is a large antelope and one of the two species of wildebeest. It is placed in the genus Connochaetes and family Bovidae, and has a close taxonomic relationship with the black wildebeest. The blue wildebeest is known to have five subspecies. This broad-shouldered antelope has a muscular, front-heavy appearance, with a distinctive, robust muzzle. Young blue wildebeest are born tawny brown, and begin to take on their adult coloration at the age of 2 months. The adults' hues range from a deep slate or bluish-gray to light gray or even grayish-brown. Both sexes possess a pair of large curved horns.

<span class="mw-page-title-main">Wildlife of Zambia</span>

The wildlife of Zambia refers to the natural flora and fauna of Zambia. This article provides an overview, and outline of the main wildlife areas or regions, and compact lists of animals focusing on prevalence and distribution in the country rather than on taxonomy. More specialized articles on particular groups are linked from here.

<span class="mw-page-title-main">Zambezian flooded grasslands</span> Flooded grassland ecoregion in Africa

The Zambezian flooded grasslands is an ecoregion of southern and eastern Africa that is rich in wildlife.

<span class="mw-page-title-main">Crawshay's zebra</span> Subspecies of zebra

Crawshay's zebra is a subspecies of the plains zebra native to eastern Zambia, east of the Luangwa River, Malawi, southeastern Tanzania, and northern Mozambique south to the Gorongoza District. Crawshay's zebras can be distinguished from other subspecies of plains zebras in that its lower incisors lack an infundibulum. Crawshay's zebra has very narrow stripes compared to other forms of the plains zebra.

<span class="mw-page-title-main">Chapman's zebra</span> Subspecies of the plains zebra

Chapman's zebra, named after explorer James Chapman, is a subspecies of the plains zebra from southern Africa.

<span class="mw-page-title-main">Maneless zebra</span> Subspecies of zebra

The maneless zebra is a subspecies of the plains zebra spread over the northern parts of eastern Africa. It ranges in northwestern Kenya to the Karamoja district of Uganda. It is also found in eastern South Sudan, east of the White Nile. It is the northernmost subspecies of the plains zebra. The last remaining substantial population is in Kidepo Valley National Park.

References

  1. Duncan, P. (ed.). 1992.Zebras, Asses, and Horses: An Action Plan for the Conservation of Wild Equids. Gland, Switzerland: IUCN/SSC Equid Specialist Group.
  2. Mayer, T.; Kispal, I.; Cuisin, J.; Csorba, G. (2013). "Type series of Equus quagga zambeziensis (Mammalia: Perissodactyla: Equidae)". Annales historico-naturales Musei nationalis Hungarici. 105: 247–257.
  3. Groves, C.P. & Bell, H.B. 2004. "New Investigations on the Taxonomy of the Zebras Genus Equus, subgenus Hippotigris". Mammalian Biology. 69: 182-196.
  4. 1 2 "ANIMAL BYTES - Grant's Zebra". SeaWorld/Busch Gardens ANIMALS. SeaWorld Parks & Entertainment. Archived from the original on November 14, 2011. Retrieved September 13, 2011.
  5. 1 2 "The Zoo | Grant's zebra". www.belfastzoo.co.uk. Retrieved 2020-05-25.
  6. "Grant's Zebra". Honolulu Zoo. Archived from the original on September 27, 2011. Retrieved June 1, 2011.
  7. Reporters, Oxpeckers (March 16, 2016). "SA breeders buck the system".
  8. "Video". www.youtube.com. 28 November 2009. Archived from the original on 2021-12-22. Retrieved 2020-11-11.
  9. "Documentation". wildlifevetsnamibia.com. Archived from the original on 2020-03-21. Retrieved 2020-11-11.
  10. "zebra | Size, Diet, & Facts". Encyclopedia Britannica. Retrieved 2020-08-13.
  11. "Grant's Zebra". www.elpasozoo.org. Retrieved 2024-05-28.

Sources