Blesbok | |
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At Krugersdorp Game Reserve | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Artiodactyla |
Family: | Bovidae |
Subfamily: | Alcelaphinae |
Genus: | Damaliscus |
Species: | |
Subspecies: | D. p. phillipsi |
Trinomial name | |
Damaliscus pygargus phillipsi Harper, 1939 | |
Synonyms | |
Damaliscus dorcas phillipsi |
The blesbok or blesbuck (Damaliscus pygargus phillipsi) is a subspecies of the bontebok antelope endemic to South Africa, Eswatini and Namibia. It has a distinctive white face and forehead, which inspired the name because bles is the Afrikaans (and Dutch language) word for a blaze such as one might see on the forehead of a horse.
The blesbok and the bontebok (D. p. pygargus) are subspecies of the same species and can readily interbreed, the hybrid offspring being known as the bontebles or baster blesbok; the differences between the two subspecies have arisen due to preferences for different habitats in the wild.
The blesbok is endemic to southern Africa and is found in large numbers in all national parks with open grasslands, from the Highveld north of the Vaal River southwards through the Free State, to the Eastern Cape. It is a plains species and dislikes wooded areas. It was first described in the 17th century in bountiful herds. [2]
Physically, rams and ewes are remarkably similar. Their mass can be as much as 85 kg. A characteristic of the blesbok is the prominent white blaze on the face and a horizontal brown strip that divides this blaze above the eyes. The body is brown with a lighter-coloured saddle on the back and the rump an even lighter shade. The legs are brown, with a white patch behind the top part of the front legs. Lower legs whitish. Both sexes carry horns, ringed almost to the tip. Female horns are slightly more slender. The neck and the top of the back of the blesbok are brown. Lower down on the flanks and buttocks, the coloring becomes darker. The belly, the inside of the buttocks, and the area up to the base of the tail is white. Blesbok can be easily differentiated from other antelopes because they have a distinct white face and forehead. The blesbok differs from the bontebok by having less white on the coat and the blaze on the face, which is usually divided; the coat is also a lighter yellow than the bontebok. The length of their horns averages at around 38 cm. Male adult blesbok average around 70 kg; females average lower, at around 61 kg. [3]
Blesbok can be found in open veld or plains of South Africa, Eswatini and Namibia. Their preferred habitat is open grassland with water. They often occupy relatively small territories of 2.5 to 6.0 acres in size. They were once one of the most abundant antelope species of the African plains but have become scarce since 1893 due to relentless poaching for their skins and meat. Trophy hunting has helped the blesbok to survive and thrive in the areas where they are hunted legally.
The blesbok is a seasonal breeder, with rutting from March to May. Births peak during November and December after a gestation period of about 240 days (8 months). Females give birth to a single calf per breeding season. [5]
The blesbok was hunted nearly to extinction because of its large numbers, but having been protected since the late 19th century, it has proliferated. Today, it is sufficiently numerous not to be classed as endangered. In modern times, this is largely because of the commercial value of the blesbok to private landowners and because it is one of the few medium-sized antelopes that can be contained by normal stock fencing. [6] As of 2017, blesbok numbers have had an upward trend, and are estimated to be at least 54,000, with about 69% of these thought to be genetically pure. [1] There are at least 17,000 in protected areas. [1] The principal threat is thought to be hybridization with the bontebok. [1]
Humans, lions, leopards, African wild dogs, spotted hyenas, and cheetahs are the blesbok's main predators, while jackals, eagles, and potentially rock pythons and monitor lizards may take unattended calves. Nile crocodiles will catch blesbok, opportunistically, if they come to drink at bodies of water where crocodiles reside, or attempt to cross rivers with crocodiles in them.
The blesbok is also farmed and hunted for its skin, meat, and for trophies. Blesbok are shy and alert; they rely on speed and endurance to escape predators but tend to return to where they were attacked after a few minutes. When chased, they can maintain a speed of 70 km/h (43 mph) but, like other white-fronted damalisques, blesbok are not good jumpers. They are, however, very good at crawling under things.
Fossil remains of a prehistoric relative, Damaliscus niro, were found in deposits in Sterkfontein. With a weight of approximately 120 kg, it was heavier than the modern blesbok and had slightly different horns. D. niro became extinct at the end of the Pleistocene 12,000 years ago. [7]
The springbok or springbuck is an antelope found mainly in south and southwest Africa. The sole member of the genus Antidorcas, this bovid was first described by the German zoologist Eberhard August Wilhelm von Zimmermann in 1780. Three subspecies are identified. A slender, long-legged antelope, the springbok reaches 71 to 86 cm at the shoulder and weighs between 27 and 42 kg. Both sexes have a pair of black, 35-to-50 cm (14-to-20 in) long horns that curve backwards. The springbok is characterised by a white face, a dark stripe running from the eyes to the mouth, a light-brown coat marked by a reddish-brown stripe that runs from the upper fore leg to the buttocks across the flanks like the Thomson's gazelle, and a white rump flap.
Wildebeest, also called gnu, are antelopes of the genus Connochaetes and native to Eastern and Southern Africa. They belong to the family Bovidae, which includes true antelopes, cattle, goats, sheep, and other even-toed horned ungulates. There are two species of wildebeest: the black wildebeest or white-tailed gnu, and the blue wildebeest or brindled gnu.
The subfamily Alcelaphinae, of the family Bovidae, contains the wildebeest, tsessebe, topi, hartebeest, blesbok and bontebok, and several other related species. Depending on the classification, there are 6–10 species placed in four genera, although Beatragus is sometimes considered a subgenus of Damaliscus, while Sigmoceros is sometimes considered for the Lichtenstein's hartebeest.
The roan antelope is a large, savanna-dwelling antelope found in Western, Southern, and parts of Central and Eastern Africa. Named for its roan colour, it has a lighter-toned underbelly and a (mostly) white face and snout, but with a black "mask" around the eyes and on the bridge of the snout, being somewhat lighter in females. Additionally, a pair of formidable, recurved horns are present on the heads of both males and females, albeit larger on the males, growing up to 100 cm long. Males and females have short, erect, mohawk-like manes running down their back and very light, shaggy neckbeards, both of which are more pronounced in males. Both mane and neckbeard are tinted with darker tips, which run the length of the animal's back and belly, ending in a dark-coloured tail. The ears are long, erect, and donkey-like.
The sable antelope 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.
The hirola, also called the Hunter's hartebeest or Hunter's antelope, is a critically endangered antelope species found as of now, only in Kenya along the border of Somalia. It was first described by the big game hunter and zoologist H.C.V. Hunter in 1888. It is the only living member of the genus Beatragus, though other species are known from the fossil record. The global hirola population is estimated at 300–500 animals and there are none in captivity. According to a document produced by the International Union for Conservation of Nature "the loss of the hirola would be the first extinction of a mammalian genus on mainland Africa in modern human history".
The common tsessebe or sassaby is the southern, nominate subspecies of Damaliscus lunatus, although some authorities have recognised it as an independent species. It is most closely related to the Bangweulu tsessebe, sometimes also seen as a separate species, less to the topi, korrigum, coastal topi and tiang subspecies of D. lunatus, and less to the bontebok in the same genus. Common tsessebe are found in Angola, Zambia, Namibia, Botswana, Zimbabwe, Eswatini, and South Africa.
The bontebok is an antelope found in South Africa, Lesotho and Namibia. D. pygargus has two subspecies; the nominate subspecies, occurring naturally in the Fynbos and Renosterveld areas of the Western Cape, and the blesbok occurring in the Highveld.
The hartebeest, also known as kongoni or kaama, is an African antelope. It is the only member of the genus Alcelaphus. Eight subspecies have been described, including two sometimes considered to be independent species. A large antelope, the hartebeest stands just over 1 m at the shoulder, and has a typical head-and-body length of 200 to 250 cm. The weight ranges from 100 to 200 kg. It has a particularly elongated forehead and oddly-shaped horns, a short neck, and pointed ears. Its legs, which often have black markings, are unusually long. The coat is generally short and shiny. Coat colour varies by the subspecies, from the sandy brown of the western hartebeest to the chocolate brown of the Swayne's hartebeest. Both sexes of all subspecies have horns, with those of females being more slender. Horns can reach lengths of 45–70 cm (18–28 in). Apart from its long face, the large chest and the sharply sloping back differentiate the hartebeest from other antelopes. A conspicuous hump over the shoulders is due to the long dorsal processes of the vertebrae in this region.
Abbott's duiker, also known as minde in Swahili, is a large, forest-dwelling duiker found only in a few scattered enclaves in Tanzania. It may be a subspecies of the yellow-backed duiker. It is very rare, and the first photograph of an Abbott's duiker in the wild was taken as recently as 2003.
The black wildebeest or white-tailed gnu is one of the two closely related wildebeest species. It is a member of the genus Connochaetes and family Bovidae. It was first described in 1780 by Eberhard August Wilhelm von Zimmermann. The black wildebeest is typically 170–220 cm (67–87 in) in head-and-body length, and the typical weight is 110–180 kg (240–400 lb). Males stand about 111–121 cm (44–48 in) at the shoulder, while the height of the females is 106–116 cm (42–46 in). The black wildebeest is characterised by its white, long, horse-like tail. It also has a dark brown to black coat and long, dark-coloured hair between its forelegs and under its belly.
The black-fronted duiker is a small antelope found in central and west-central Africa.
The southern reedbuck, rietbok or common reedbuck is a diurnal antelope typically found in southern Africa. It was first described by Pieter Boddaert, a Dutch physician and naturalist, in 1785. It is placed in the genus Redunca and family Bovidae. This antelope has an average mass of 58 kg (128 lb) and a body length of about 134–167 cm (53–66 in).
Bontebok National Park is a species-specific national park in South Africa. It was established in 1931 to ensure the preservation of the Bontebok. It is the smallest of South Africa's 19 National Parks, covering an area of 27.86 km2 The park is part of the Cape Floristic Region, which is a World Heritage Site.
Damaliscus lunatus is a large African antelope of the genus Damaliscus and subfamily Alcelaphinae in the family Bovidae, with a number of recognised geographic subspecies. Some authorities have split the different populations of the species into different species, although this is seen as controversial. Common names include topi, sassaby, tiang and tsessebe.
Salt's dik-dik is a small antelope found in semidesert, bushland, and thickets in the Horn of Africa, but marginally also in northern Kenya and eastern Sudan. It is named after Henry Salt, who was the first European to acknowledge the species in Abyssinia in the early 19th century.
The red hartebeest, also called the Cape hartebeest or Caama, is a subspecies of the hartebeest found in Southern Africa. More than 130,000 individuals live in the wild. The red hartebeest is closely related to the tsessebe and the topi.
Abe Bailey Nature Reserve is a protected area in the Merafong City Local Municipality in Gauteng, South Africa. It is situated near Carletonville, beside the township of Khutsong on the West Rand. It is about 4,200 hectares in size.
The Mongalla gazelle is a species of gazelle found in the floodplain and savanna of South Sudan. It was first described by British zoologist Walter Rothschild in 1903. The taxonomic status of the Mongalla gazelle is widely disputed. While some authorities consider it a full-fledged monotypic species in the genus Eudorcas, it is often considered a subspecies of Thomson's gazelle, while other authorities regard it as subspecies of the red-fronted gazelle.
The preorbital gland is a paired exocrine gland found in many species of artiodactyls, which is homologous to the lacrimal gland found in humans. These glands are trenchlike slits of dark blue to black, nearly bare skin extending from the medial canthus of each eye. They are lined by a combination of sebaceous and sudoriferous glands, and they produce secretions which contain pheromones and other semiochemical compounds. Ungulates frequently deposit these secretions on twigs and grass as a means of communication with other animals.