Sable antelope

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Sable antelope
Sable antelope (Hippotragus niger) adult male.jpg
Adult male or bull, Tswalu Kalahari Reserve, South Africa
Sable (Hippotragus niger) female crossing the road (16635641913), crop.jpg
Adult female or cow crossing the road in Kruger National Park, South Africa
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Subfamily: Hippotraginae
Genus: Hippotragus
Species:
H. niger
Binomial name
Hippotragus niger
(Harris, 1838)
Hippotragus niger distribution.svg
      geographic range

The sable antelope (Hippotragus niger) is a large antelope which inhabits wooded savanna in East and Southern Africa, from the south of Kenya to South Africa, with a separated population in Angola. [2]

Contents

Taxonomy

The sable antelope shares the genus Hippotragus with the extinct bluebuck (H. leucophaeus) and the roan antelope (H. equinus), and is a member of the family Bovidae. [3]

In 1996, an analysis of mitochondrial DNA extracted from a mounted specimen of the bluebuck showed that it is outside the clade containing the roan and sable antelopes. The cladogram below shows the position of the sable antelope among its relatives, following the 1996 analysis: [4]

blesbok (Damaliscus pygargus phillipsi)

bontebok (Damaliscus pygargus pygarus)

bluebuck (Hippotragus leucophaeus)†extinct

roan antelope (Hippotragus equinus)

sable antelope (Hippotragus niger)

Subspecies

Hipotragus niger has four subspecies:

In English "great sable antelope", "sable" or the Swahili name mbarapi are sometimes used. An archaic term used in accounts of hunting expeditions in South Africa is "potaquaine"; [11] the origin and exact application are unclear. Local names include swartwitpens (Afrikaans), kgama or phalafala (Sotho), mBarapi or palahala (Swahili), kukurugu, kwalat or kwalata (Tswana), ngwarati (Shona), iliza (Xhosa), impalampala (Zulu) and umtshwayeli (Ndebele). [12]

Description

The sable antelope is sexually dimorphic, with the male heavier and about one-fifth taller than the female. [13] The head-and-body length is typically between 190 and 255 cm (75 and 100 in). [14] Males reach about 117–140 cm (46–55 in) at the shoulder, while females are slightly shorter. Males typically weigh 235 kg (518 lb) and females 220 kg (490 lb). [15] The tail is 40–75 cm (16–30 in) long, with a tuft at the end. [13] [14]

The sable antelope has a compact and robust build, characterized by a thick neck and tough skin. [13] It has a well-developed and often upright mane on its neck, as well as a short mane on the throat. [15] Its general colouration is rich chestnut to black. Females and juveniles are chestnut to dark brown, while males begin darkening and turn black after three years. However, in southern populations, females have a brown to black coat. Calves less than two months old are a light tan and show faint markings. [15] The underparts, cheek, and chin are all white, creating a great contrast with the dark back and flanks. [13] Long, white hairs are present below the eyes, and a wide, black stripe runs over the nose. [14]

Adult male in Chobe National Park, Botswana Sable Profile Chobe.jpg
Adult male in Chobe National Park, Botswana

Both sexes have ringed horns which arch backwards. In females, these can reach 61–102 cm (24–40 in), while in males they are 81–165 cm (32–65 in) long. [15] The average lifespan of the sable antelope is 19 years in the wild and 22 years in captivity. [16]

Behavior

Sable antelopes live in savanna woodlands and grasslands during the dry season, [17] where they eat mid-length grasses and leaves. They visit salt licks and have been known to chew bones to collect minerals. They are diurnal, but are less active during the heat of the day. They form herds of 10 to 30 females and calves led by a single male, called a bull. Males fight among themselves; they drop to their knees and use their horns. [18]

In each herd, the juvenile males are exiled from the herd around 3 years old. All of the female calves remain, however. When the herd gets too large, it divides into smaller groups of cows and their young. These groups form new herds, once again with only one adult bull. The young males, which have been separated from the herd, associate in "bachelor groups" of up to 12 individuals. Among the bachelors, the most dominant is the first individual to join a new group of females when the position is open. Seldom, during their fights for dominance, they are able to inflict bodily harm to any contenders. [18]

When sable antelopes are threatened by predators, including lions, they confront their attackers and fight-back aggressively. Using their scimitar-shaped horns that can reach to its vulnerable rump area (which is generally preferred by predators), they can impale their enemy. There are instances where their predators have died during such fights. In the 1950 to 1970's the antelope's numbers were reduced severely by tsetse fly pest outbreaks.[ citation needed ]

The grassland habitat of the sable antelope is being reduced by habitat destruction for agricultural development. Sable antelope are important to their habitats as grazers and browsers. They are also important as prey for carnivores. [18]

Reproduction

The giant sable antelope's breeding season is seasonal and births coincide with the rainy season. After a gestation period of around 9 months, the female gives birth to a single young. A newborn calf is born with a sandy coloured coat, which helps it to camouflage. The calf will lie hidden away for at least 10 days while being nursed by its mother.

Young sable antelope are weaned at around 8 months and will become sexually mature at between 2 and 3 years. As the calf develops, its coat will darken and it will achieve its status within the herd. The life span of a giant sable antelope is around 17 years. [19]

Diet

Sable antelopes are herbivores. They are specialized browsing animals that feed upon foliage, mid-length grasses, leaves and herbs, particularly those that grow on termite mounds. Tree leaves make up 90% of their diet. They are diurnal animals, meaning they are most active in the daylight, but less active during the hottest part of the day. Like other bovids, they also have a ruminant digestive system. [19] Because water is essential to the sable antelope's survival, it travels every two to four days to drink at water sources. [20] The sable antelope presumably decreases its risk of being eaten by predators by staying away from feeding areas with high numbers of other grazers, but at the cost of prolonged and strenuous journeys to water. Use of specific water sources in particular regions is related to the presence of calcium and magnesium salts in the water, allowing the antelope to consume large amounts of minerals while meeting their water needs. [21]

The Sable Antelope is featured on the Rhodesian flag and coat of arms. It is also depicted on the Coat of arms of the Federation of Rhodesia and Nyasaland. It is also the emblem of TAAG Angola Airlines.

The Zimbabwe rugby union national team is nicknamed after the sable antelope.

Related Research Articles

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The impala or rooibok is a medium-sized antelope found in eastern and southern Africa. The only extant member of the genus Aepyceros, and tribe Aepycerotini, it was first described to Europeans by German zoologist Hinrich Lichtenstein in 1812. Two subspecies are recognised—the grassland-dwelling common impala, and the larger and darker black-faced impala, which lives in slightly more arid, scrubland environments. The impala reaches 70–92 cm (28–36 in) at the shoulder and weighs 40–76 kg (88–168 lb). It features a glossy, reddish brown coat. The male's slender, lyre-shaped horns are 45–92 cm (18–36 in) long.

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

The klipspringer is a small antelope found in eastern and southern Africa. The sole member of its genus and subfamily/tribe, the klipspringer was first described by German zoologist Eberhard August Wilhelm von Zimmermann in 1783. The klipspringer is a small, sturdy antelope; it reaches 43–60 centimetres at the shoulder and weighs from 8 to 18 kilograms. The coat of the klipspringer, yellowish gray to reddish brown, acts as an efficient camouflage in its rocky habitat. Unlike most other antelopes, the klipspringer has a thick and coarse coat with hollow, brittle hairs. The horns, short and spiky, typically measure 7.5–9 cm.

<span class="mw-page-title-main">Sitatunga</span> Species of swamp-dwelling antelope

The sitatunga or marshbuck is a swamp-dwelling medium-sized antelope found throughout central Africa, centering on the Democratic Republic of the Congo, the Republic of the Congo, Cameroon, parts of Southern Sudan, Equatorial Guinea, Burundi, Ghana, Botswana, Rwanda, Zambia, Gabon, the Central African Republic, Tanzania, Uganda and Kenya. The sitatunga is mostly confined to swampy and marshy habitats. Here they occur in tall and dense vegetation as well as seasonal swamps, marshy clearings in forests, riparian thickets and mangrove swamps.

<span class="mw-page-title-main">Greater kudu</span> Species of woodland antelope

The greater kudu is a large woodland antelope, found throughout eastern and southern Africa. Despite occupying such widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation, and poaching. The greater kudu is one of two species commonly known as kudu, the other being the lesser kudu, T. imberbis.

<span class="mw-page-title-main">Common eland</span> Second largest antelope in the world

The common eland, also known as the southern eland or eland antelope, is a large-sized savannah and plains antelope found in East and Southern Africa. An adult male is around 1.6 m (5.2 ft) tall at the shoulder and can weigh up to 942 kg (2,077 lb) with a typical range of 500–600 kg (1,100–1,300 lb). Females are around 1.4 m (4.6 ft) tall and weigh 340–445 kg (750–981 lb). It is the second-largest antelope in the world, being slightly smaller on average than the giant eland. It was scientifically described by Peter Simon Pallas in 1766.

<span class="mw-page-title-main">Giant eland</span> Species of bovine mammal

The giant eland, also known as the Lord Derby's eland and greater eland, is an open-forest and savanna antelope. A species of the family Bovidae and genus Taurotragus, it was described in 1847 by John Edward Gray. The giant eland is the largest species of antelope, with a body length ranging from 220–290 cm (7.2–9.5 ft). There are two subspecies: T. d. derbianus and T. d. gigas.

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

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<span class="mw-page-title-main">Common tsessebe</span> Subspecies of the subfamily Alcelaphinae in the family Bovidae

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The waterbuck is a large antelope found widely in sub-Saharan Africa. It is placed in the genus Kobus of the family Bovidae. It was first described by Irish naturalist William Ogilby in 1833. Its 13 subspecies are grouped under two varieties: the common or ellipsiprymnus waterbuck and the defassa waterbuck. The head-and-body length is typically between 177 and 235 cm and the typical height is between 120 and 136 cm. In this sexually dimorphic antelope, males are taller and heavier than females. Males reach roughly 127 cm (50 in) at the shoulder, while females reach 119 cm (47 in). Males typically weigh 198–262 kg (437–578 lb) and females 161–214 kg (355–472 lb). Their coat colour varies from brown to grey. The long, spiral horns, present only on males, curve backward, then forward, and are 55–99 cm (22–39 in) long.

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The bluebuck or blue antelope is an extinct species of antelope that lived in South Africa until around 1800. It was smaller than the other two species in its genus Hippotragus, the roan antelope and sable antelope. The bluebuck was sometimes considered a subspecies of the roan antelope, but a genetic study has confirmed it as a distinct species.

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References

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