Arabian oryx | |
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Male in Dubai Desert Conservation Reserve | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Artiodactyla |
Family: | Bovidae |
Subfamily: | Hippotraginae |
Genus: | Oryx |
Species: | O. leucoryx |
Binomial name | |
Oryx leucoryx (Pallas, 1777) | |
The Arabian oryx or white oryx (Oryx leucoryx) is a medium-sized antelope with a distinct shoulder bump, long, straight horns, and a tufted tail. [2] It is a bovid, and the smallest member of the genus Oryx , native to desert and steppe areas of the Arabian Peninsula. The Arabian oryx was extinct in the wild by the early 1970s, but was saved in zoos and private reserves, and was reintroduced into the wild starting in 1980.
In 1986, the Arabian oryx was classified as endangered on the IUCN Red List, and in 2011, it was the first animal to revert to vulnerable status after previously being listed as extinct in the wild. It is listed in CITES Appendix I. In 2016, populations were estimated at 1,220 individuals in the wild, including 850 mature individuals, and 6,000–7,000 in captivity worldwide. [1]
The taxonomic name Oryx leucoryx is from the Greek orux (gazelle or antelope) and leukos (white). The Arabian oryx is also called the white oryx in English, dishon in Hebrew, [3] and is known as maha, wudhaihi, baqar al-wahsh, and boosolah in Arabic. [4]
The name "oryx" was introduced by Peter Simon Pallas in 1767 for the common eland as Antilope oryx. He also scientifically described the Arabian oryx as Oryx leucoryx, giving its range as "Arabia, and perhaps Libya". In 1816, Henri Marie Ducrotay de Blainville subdivided the antelope group, adopted Oryx as a genus name, and changed the species name Antilope oryx to Oryx gazella. In 1826, Martin Lichtenstein confused matters by transferring the name Oryx leucoryx to the scimitar oryx, now Oryx dammah. The Zoological Society of London obtained the first living individual in Europe in 1857. Not realizing this might be the Oryx leucoryx of previous authors, John Edward Gray proposed calling it Oryx beatrix after Princess Beatrice of the United Kingdom. Oldfield Thomas renamed the scimitar oryx as Oryx algazal in 1903 and gave the Arabian oryx its original name. [4]
The Arabian oryx' coat is an almost luminous white, the undersides and legs are brown, and black stripes occur where the head meets the neck, on the forehead, on the nose, and going from the horn down across the eye to the mouth. Both sexes have long, straight or slightly curved, ringed horns which are 0.61–1.49 m (2–4.9 ft). It stands between 0.79 and 1.25 m (2.6 and 4.1 ft) tall at the shoulder and typically weighs between 220 to 460 lb (100 to 209 kg). [5]
Historically, the Arabian oryx probably ranged throughout most of the Middle East. In the early 1800s, they could still be found in the Sinai, Palestine, the Transjordan, much of Iraq, and most of the Arabian Peninsula. During the 19th and early 20th centuries, their range was pushed back towards Saudi Arabia, and by 1914, only a few survived outside that country. A few were reported in Jordan into the 1930s, but by the mid-1930s, the only remaining populations were in the Nafud Desert in northwestern Saudi Arabia and the Rub' al Khali in the south. [2]
In the 1930s, Arabian princes and oil company clerks started hunting Arabian oryxes with automobiles and rifles. Hunts grew in size, and some were reported to employ as many as 300 vehicles. By the middle of the 20th century, the northern population was effectively extinct. [2] The last Arabian oryx in the wild before reintroduction was reported in 1972. [6]
Arabian oryxes prefer to range in gravel deserts or hard sand, where their speed and endurance will protect them from most predators and hunters on foot. In the sand deserts in Saudi Arabia, they used to be found in the hard sand areas of the flats between the softer dunes and ridges. [2]
Arabian oryxes have been reintroduced to Oman, Saudi Arabia, Israel, the United Arab Emirates, Syria, and Jordan. A small population was introduced on Hawar Island, Bahrain, and large semi-managed populations at several sites in Qatar and the UAE. The total reintroduced population is now estimated to be around 1,000. This puts the Arabian oryx well over the threshold of 250 mature individuals needed to qualify for endangered status. However, the majority of the population is concentrated in Saudi Arabia. [1]
Arabian oryxes rest during the heat of the day. They can detect rainfall and move towards it, meaning they have huge ranges; a herd in Oman can range over 3,000 km2 (1,200 sq mi). Packs are of mixed sex and usually contain between 2 and 15 animals, though herds of up to 100 have been reported. Arabian oryxes are generally not aggressive toward one another, which allows herds to exist peacefully for some time. [7]
The diets of the Arabian oryx consist mainly of grasses, but they eat a large variety of vegetation, including buds, herbs, fruit, tubers and roots. Herds of Arabian oryxes follow infrequent rains to eat the new plants that grow afterwards. They can go for several weeks without water. [7] In Oman, it primarily eats grasses of the genus Stipagrostis, flowers from Stipagrostis plants appeared highest in crude protein and water, while leaves seemed a better food source with other vegetation. [8]
When the Arabian oryx is not wandering its habitat or eating, it digs shallow depressions in the soft ground under shrubs or trees for resting. They can detect rainfall from a distance and follow in the direction of fresh plant growth. The number of individuals in a herd can vary greatly (up to 100 have been reported occasionally), but the average is 10 or fewer individuals. [9] Bachelor herds do not occur, and single territorial males are rare. Herds establish a straightforward hierarchy that involves all females and males above the age of about seven months. [10] Arabian oryxes tend to maintain visual contact with other herd members, with subordinate males taking positions between the main body of the herd and the outlying females. If separated, males will search areas where the herd last visited, settling into a solitary existence until the herd's return. Where water and grazing conditions permit, male Arabian oryxes establish territories. Bachelor males are solitary. [11] A dominance hierarchy is created within the herd by posturing displays, which avoid the danger of serious injury their long, sharp horns could potentially inflict. Males and females use their horns to defend the sparse territorial resources against interlopers. [12]
The Arabian oryx changes its physiology and behaviour at different times of the year to increase survival during times when food and water are in limited supply. During the summer, when droughts are common in the desert environments where it lives, the Arabian oryx will drastically reduce its minimal fasting metabolic rate by lying completely inactive beneath shade trees during the day and ranging over smaller areas at night to forage. [13] By letting its body temperature rise during the heat of the day, it uses less evaporative cooling and retains more body water, and at night, the cool night air lowers its temperature back to the normal range. [14] The oryx’s arterial blood temperature is partly powered by a network of small arterial vessels with a large surface area called the rete mirabile, which branches from the two carotid arteries to the brain and allows for heat exchange between warm arterial blood and the cooler blood in the sinus cavities. [14] Because of these changes in behaviour and physiology, it was shown that Arabian oryx can reduce their urine volume, faecal water loss, and resting metabolic rate by at least 50%. [15]
Wolves are the Arabian oryx's only predator. In captivity and safe conditions in the wild, Arabian oryxes have a lifespan of up to 20 years. [11] In periods of drought, though, their life expectancy may be significantly reduced by malnutrition and dehydration. Other causes of death include fights between males, snakebites, disease, and drowning during floods. [16]
The Arabian oryx is the national animal of Jordan, Oman, the United Arab Emirates, [17] Bahrain, and Qatar. [18]
The Arabian oryx is also the namesake of several businesses on the Arabian peninsula, notably Al Maha Airways and Al Maha Petroleum.
In the King James Version of the Bible, the word re’em is translated as 'unicorn'. In Modern Hebrew, the name re'em lavan, meaning white oryx, is used in error for the scimitar-horned oryxes living in the sanctuary Yotvata Hai Bar near Eilat. [19] The scimitar oryx is called re'em Sahara. The Arabian name ri'ïm is the equivalent of the Hebrew name re'em, also meaning white oryx, suggesting a borrowing from the Early Modern Era.
A Qatari oryx named "Orry" was chosen as the official games mascot for the 2006 Asian Games in Doha, [20] and is shown on tailfins of planes belonging to Middle Eastern airline Qatar Airways.
The myth of the one-horned unicorn may be based on oryxes that have lost one horn. Aristotle and Pliny the Elder held that the oryx was the unicorn's "prototype". [21] From certain angles, the oryx may seem to have one horn rather than two, [22] [23] and given that its horns are made from hollow bone that cannot be regrown, if an Arabian oryx were to lose one of its horns, for the rest of its life, it would have only one. [21]
Another source for the concept may have originated from the translation of the Hebrew word re'em into Greek as μονόκερως, monokeros, in the Septuagint. [24] In Psalm 22:21, the word karen, meaning horn, is written in singular. The Roman Catholic Vulgata and the Douay-Rheims Bible translated re'em as rhinoceros; other translations are names for a wild bull, wild oxen, buffalo, or gaur, but in some languages, a word for unicorn is maintained. The Arabic translation alrim is the correct choice etymologically, meaning 'white oryx'. [25]
The Phoenix Zoo and the Fauna and Flora Preservation Society of London (now Fauna and Flora International), with financial help from the World Wildlife Fund, are credited with saving the Arabian oryx from extinction. In 1962, these groups started the first captive-breeding herd in any zoo, at the Phoenix Zoo, sometimes referred to as "Operation Oryx". [26] [27] Starting with nine animals, the Phoenix Zoo has had over 240 successful births. From Phoenix, Arabian oryxes were sent to other zoos and parks to start new herds.
In 1968, Sheikh Zayed bin Sultan Al Nahyan of Abu Dhabi, out of concern for the land's wildlife, particularly ungulates such as the Arabian oryx, founded the Al Ain Zoo to conserve them. [28]
Arabian oryxes were hunted to extinction in the wild by 1972. By 1980, the number of Arabian oryxes in captivity had increased to the point that Arabian oryx reintroduction was started. The first release, to Oman, was attempted with Arabian oryxes from the San Diego Wild Animal Park. [6] Although numbers in Oman have declined, there are now wild populations in Saudi Arabia and Israel, [29] [30] as well. One of the largest populations is found in Mahazat as-Sayd Protected Area, a large, fenced reserve in Saudi Arabia, covering more than 2,000 km2 (770 sq mi). [1]
On June 28, 2007, Oman's Arabian Oryx Sanctuary was the first site ever to be removed from the UNESCO World Heritage List. UNESCO's reason for this was the Omani government's decision to open 90% of the site to oil prospecting. The Arabian oryx population on the site has been reduced from 450 in 1996 to only 65 in 2007. Now, fewer than four breeding pairs are left on the site. [31] [ needs update ]
In June 2011, the Arabian oryx was relisted as vulnerable by the IUCN Red List. The IUCN estimated there were more than 1,200 Arabian oryx in the wild as of 4 December 2020 [update] 2016, with 6,000–7,000 held in captivity worldwide in zoos, preserves, and private collections. Some of these are in large, fenced enclosures (free-roaming), including those in Syria (Al Talila), Bahrain, Qatar, and the UAE. [1] This is the first time the IUCN has reclassified a species as vulnerable after it had been listed as extinct in the wild. [32] The Arabian oryx is also listed in CITES Appendix I. [1]
The bongo is a large, mostly nocturnal, forest-dwelling antelope, native to sub-Saharan Africa. Bongos are characterised by a striking reddish-brown coat, black and white markings, white-yellow stripes, and long slightly spiralled horns. It is the only tragelaphid in which both sexes have horns. Bongos have a complex social interaction and are found in African dense forest mosaics. They are the third-largest antelope in the world.
The term antelope refers to numerous extant or recently extinct species of the ruminant artiodactyl family Bovidae that are indigenous to most of Africa, India, the Middle East, Central Asia, and a small area of Eastern Europe. Antelopes do not form a monophyletic group, as some antelopes are more closely related to other bovid groups, like bovines, goats, and sheep, than to other antelopes.
Oryx is a genus consisting of four large antelope species called oryxes. Their pelage is pale with contrasting dark markings in the face and on the legs, and their long horns are almost straight. The exception is the scimitar oryx, which lacks dark markings on the legs, only has faint dark markings on the head, has an ochre neck, and has horns that are clearly decurved.
Species reintroduction is the deliberate release of a species into the wild, from captivity or other areas where the organism is capable of survival. The goal of species reintroduction is to establish a healthy, genetically diverse, self-sustaining population to an area where it has been extirpated, or to augment an existing population. Species that may be eligible for reintroduction are typically threatened or endangered in the wild. However, reintroduction of a species can also be for pest control; for example, wolves being reintroduced to a wild area to curb an overpopulation of deer. Because reintroduction may involve returning native species to localities where they had been extirpated, some prefer the term "reestablishment".
The addax, also known as the white antelope and the screwhorn antelope, is an antelope native to the Sahara Desert. The only member of the genus Addax, it was first described scientifically by Henri de Blainville in 1816. As suggested by its alternative name, the pale antelope has long, twisted horns – typically 55 to 80 cm in females and 70 to 85 cm in males. Males stand from 105 to 115 cm at the shoulder, with females at 95 to 110 cm. They are sexually dimorphic, as the females are smaller than the males. The colour of the coat depends on the season – in the winter, it is greyish-brown with white hindquarters and legs, and long, brown hair on the head, neck, and shoulders; in the summer, the coat turns almost completely white or sandy blonde.
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.
The scimitar oryx, also known as the scimitar-horned oryx and the Sahara oryx, is an Oryx species that was once widespread across North Africa and parts of West Africa and Central Africa. In 2000, it was declared extinct in the wild on the IUCN Red List, but in 2023 it was downlisted to endangered, with a reintroduced population in Chad. This particular oryx is adapted to harsh desert conditions and can survive for months or even years without drinking water. A grazing animal, it derives most of its daily moisture intake from plants.
The rhim gazelle or rhim, also known as the slender-horned gazelle, African sand gazelle or Loder's gazelle, is a pale-coated gazelle with long slender horns and well adapted to desert life. It is considered an endangered species because fewer than 2500 are left in the wild. They are found in Algeria, Egypt, Tunisia and Libya, and possibly Chad, Mali, Niger, and Sudan.
The Phoenix Zoo opened in 1962 and is the largest privately owned nonprofit zoo in the United States. Located in Phoenix, Arizona, the zoo was founded by Robert Maytag, a member of the Maytag family, and operates on 125 acres (51 ha) of land in the Papago Park area of Phoenix. It has been designated as a Phoenix Point of Pride.
The gemsbok, or South African oryx, is a large antelope in the genus Oryx. It is endemic to the dry and barren regions of Botswana, Namibia, South Africa and Zimbabwe, mainly inhabiting the Kalahari and Namib Deserts, areas in which it is supremely adapted for survival. Previously, some sources classified the related East African oryx, or beisa oryx, as a subspecies.
The dama gazelle, also known as the addra gazelle or mhorr gazelle, is a species of gazelle. It lives in Africa, in the Sahara desert and the Sahel. A critically endangered species, it has disappeared from most of its former range due to overhunting and habitat loss, and natural populations only remain in Chad, Mali, and Niger. Its habitat includes grassland, shrubland, semi-deserts, open savanna and mountain plateaus. Its diet includes shrubs, herbs, grasses, leaves, shoots, and fruit.
The Arabian leopard is the smallest leopard subspecies. It was described in 1830 and is native to the Arabian Peninsula, where it was widely distributed in rugged hilly and montane terrain until the late 1970s. Today, the population is severely fragmented and thought to decline continuously. In 2008, an estimated 45–200 individuals in three isolated subpopulations were restricted to western Saudi Arabia, Oman and Yemen. However, as of 2023, it is estimated that 100–120 in total remain, with 70-84 mature individuals, in Oman and Yemen, and it is possibly extinct in Saudi Arabia. The current population trend is suspected to be decreasing.
The Arabian gazelle(Gazella arabica) is a species of gazelle from the Arabian Peninsula. There are approximately 5,000 – 7,000 mature individuals in the wild.
The Arabian ostrich, Syrian ostrich, or Middle Eastern ostrich is an extinct subspecies of the ostrich that lived on the Arabian Peninsula and in the Near East until the mid-20th century.
The long-tailed goral or Amur goral is a species of ungulate of the family Bovidae found in the mountains of eastern and northern Asia, including Russia, China, and Korea. A population of this species exists in the Korean Demilitarized Zone, near the tracks of the Donghae Bukbu Line. The species is classified as endangered in South Korea, with an estimated population less than 250. It has been designated South Korean natural monument 217. In 2003, the species was reported as being present in Arunachal Pradesh, in northeast India.
The Yotvata Hai-Bar Nature Reserve is a 3,000-acre (12 km2) breeding and reacclimation center administered by the Israel Nature Reserves & National Parks Authority, situated in the Southern Arava near Yotvata.
The Arabian Peninsula coastal fog desert, also known as the Southwestern Arabian coastal xeric scrub, is a desert ecoregion on the southern coasts of the Arabian Peninsula, which experiences thick fogs where visibility may be reduced to 10 metres (33 ft). It is classed as an Afrotropical fog desert
The Arabian oryx, also called the white oryx, was extinct in the wild as of 1972, but was reintroduced to the wild starting in 1982. Initial reintroduction was primarily from two herds: the "World Herd" originally started at the Phoenix Zoo in 1963 from only nine oryx and the Saudi Arabian herd started in 1986 from private collections and some "World Herd" stock by the Saudi National Wildlife Research Center (NWRC). As of 2009 there have been reintroductions in Oman, Saudi Arabia, Israel, the United Arab Emirates, and Jordan, and as of 2013 the IUCN Red List classifies the species as vulnerable.
Jiddat al-Harasis (Jiddat-il-Harasiis) is a stony desert in south-central Oman, separating northern Oman from Dhufar. The largest strewn field of meteorites in the country is situated here. Over 160 bird species, including the endangered houbara bustard, are found here, as well as Arabian oryx and Arabian gazelle. The area was not permanently inhabited until the 19th century with the arrival of the Harasis.
The Environment Agency – Abu Dhabi (EAD) is a governmental agency established in 1996 in Abu Dhabi, United Arab Emirates (UAE), tasked with environmental protection matters in the Emirate of Abu Dhabi.