Przewalski's gazelle | |
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Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Artiodactyla |
Family: | Bovidae |
Subfamily: | Antilopinae |
Tribe: | Antilopini |
Genus: | Procapra |
Species: | P. przewalskii |
Binomial name | |
Procapra przewalskii Büchner , 1891 | |
Przewalski's gazelle (Procapra przewalskii) is a member of the family Bovidae, and in the wild, is found only in China. Once widespread, its range has declined to six populations near Qinghai Lake. [1] The gazelle was named after Nikolai Przhevalsky, a Russian explorer who collected a specimen and brought it back to St. Petersburg in 1875. [2]
Przewalski's gazelles are relatively small, slender antelopes with large eyes and short, pointed ears. The nasal bones are relatively large, suggesting an adaptation to the thin air of the Tibetan plateau. They have a head and body length of 109 to 160 cm (43 to 63 in), a shoulder height of 50 to 70 cm (20 to 28 in), and weigh between 17 and 32 kg (37 and 71 lb). Males are generally larger and heavier than the females. The tail is short, measuring only 7 to 10 cm (2.8 to 3.9 in), and is often entirely hidden by fur.
The animal is yellowish brown with a white underside and a white heart-shaped patch on its rump, partially bisected by a light brown vertical line. Males are darker in colour than females, and the coat of both sexes is more noticeably greyish in winter. The fur lacks an undercoat, consisting only of dense guard hairs. Male Przewalski's gazelles have ridged horns, which rise between the eyes and curve inwards at the tips; in younger males, the tips may actually touch, but they diverge as the animal ages. In the adult, the horns reach 18 to 26 cm (7.1 to 10.2 in) in length. The females are hornless.
Przewalski's gazelle is similar in appearance to both the Tibetan gazelle and the Mongolian gazelle, to both of which it is closely related, and occurs in similar geographic areas. It is intermediate in size between the other two species, and can most easily be distinguished from them by the shape of its horns. [3]
Until the early 20th century, Przewalski's gazelle was widespread across the high plateaus of northwestern China and Inner Mongolia. However, it is now found only in a single small area around Qinghai Lake, having been extirpated across the great majority of its former range. It inhabits flat open valleys and steppeland between mountains, and the sand dunes and semi-desert zones around lakes. [3]
Two sub-species have been described, although one is now believed to be extinct:
The preferred diet of Pzewalski's gazelles consists of sedges and grasses, supplemented by herbs and shrubs such as Astragalus . [3] They are often found foraging together with Tibetan gazelles, but do not compete for resources because the latter animal prefers legumes. Such associations with a related species allow for larger herds, which may help protect both species from predators. [4]
The gazelle usually travels in small groups, with rarely more than a dozen individuals, although much larger herds were reported in the 19th century, when the overall population was higher. Males are often solitary or travel in small groups of two or three individuals for much of the year, but gather together in small herds with the females during the winter rut. [3]
Przewalski's gazelles are generally quiet, but have been reported to make short bleating sounds.
Przewalski's gazelles rut from late December to early January. Males scent mark small territories and clash with rivals, fighting with their horns. Females have also been observed fighting for access to males. Courtship consists of the male moving towards the female while standing on his hind legs, and is followed by a brief copulation. [3]
Gestation lasts around six months, so that the young are born around May or June. The mother gives birth to a single offspring, usually in thickets or areas of tall grass, where they can be concealed from potential predators. The young are able to follow their mother within a few minutes of birth, although they may remain concealed for a few days before rejoining the herd. Females become fertile during their second year, around 18 months of age. The lifespan of Przewalski's gazelles is unknown, although based on that of related species, it is probably around eight years. [3]
Przewalski's gazelle is perhaps one of the most endangered species of large mammal on Earth. The many threats against the species include competition with domestic livestock and fencing of the natural habitat. These problems have become exacerbated as the area is increasingly developed as agricultural land. [3]
While now protected by Chinese law, and illegal hunting no longer is considered an important factor, a large percentage of the habitat of this species has already been lost due to human activities. [1] Consequently, it is considered to be an endangered species by the IUCN. Formerly, it was believed that as few as 250 remained, and it was considered critically endangered. However, this is now known to be an underestimate, with new subpopulations having been discovered in 2003 and 2006, and there were believed to be 350-400 (and possibly even more) mature individuals left. [1] By 2020, the population had exceeded 2,700, but the species continued to face severe threats. [5]
The springbok is a medium-sized 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.
The term antelope is used to refer to many species of even-toed ruminant that are indigenous to various regions in Africa and Eurasia.
The goa, also known as the Tibetan gazelle, is a species of antelope that inhabits the Tibetan plateau.
The hirola, also called the Hunter's hartebeest or Hunter's antelope, is a critically endangered antelope species found on the border between Kenya and 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".
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The Nile lechwe or Mrs Gray's lechwe is an endangered species of antelope found in swamps and grasslands in Sudan and Ethiopia.
The Tibetan antelope or chiru is a medium-sized bovid native to the northeastern Tibetan plateau. Most of the population live within the Chinese border, while some scatter across India and Bhutan. Fewer than 150,000 mature individuals are left in the wild, but the population is currently thought to be increasing. In 1980s and 1990s, they had become endangered due to massive illegal poaching. They are hunted for their extremely soft, light and warm underfur which is usually obtained after death. This underfur, known as shahtoosh, is used to weave luxury shawls. Shahtoosh shawls were traditionally given as wedding gifts in India and it takes the underfur of three to five adult antelopes to make one shawl. Despite strict controls on trade of shahtoosh products and CITES listing, there is still demand for these luxury items. Within India, shawls are worth $1,000–$5,000; internationally the price can reach as high as $20,000. In 1997 the Chinese government established the Hoh Xil National Nature Reserve solely to protect the Tibetan antelope population.
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The mountain gazelle or the Palestine mountain gazelle. is a species of gazelle widely but unevenly distributed.
Thorold's deer is a threatened species of deer found in grassland, shrubland, and forest at high altitudes in the eastern Tibetan Plateau. It is also known as the white-lipped deer for the white patches around its muzzle.
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