The dorcas gazelle (''Gazella dorcas''), also known as the ariel gazelle, is a small and common

gazelle A gazelle is one of many antelope species in the genus ''Gazella'' . This article also deals with the seven species included in two further genera, ''Eudorcas'' and ''Nanger'', which were formerly considered subgenera of ''Gazella''. A third f ...

. The dorcas gazelle stands about at the shoulder, with a head and body length of and a weight of . The numerous subspecies survive on vegetation in

grassland A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natur ...

steppe In physical geography, a steppe () is an ecoregion characterized by grassland plains without trees apart from those near rivers and lakes. Steppe biomes may include: * the montane grasslands and shrublands biome * the temperate grasslands, ...

wadis Wadi ( ar, وَادِي, wādī), alternatively ''wād'' ( ar, وَاد), North African Arabic Oued, is the Arabic term traditionally referring to a valley. In some instances, it may refer to a wet (ephemeral) riverbed that contains water onl ...

, mountain

desert A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About on ...

and in semidesert climates of

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

and

Arabia The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate. ...

. About 35,000–40,000 exist in the wild.

Taxonomy and evolution

The

scientific name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

of the dorcas gazelle is ''Gazella dorcas''. It is a member of the genus ''

Gazella A gazelle is one of many antelope species in the genus ''Gazella'' . This article also deals with the seven species included in two further genera, ''Eudorcas'' and ''Nanger'', which were formerly considered subgenera of ''Gazella''. A third f ...

'' and the family

Bovidae The Bovidae comprise the biological family of cloven-hoofed, ruminant mammals that includes cattle, bison, buffalo, antelopes, and caprines. A member of this family is called a bovid. With 143 extant species and 300 known extinct species, ...

. The

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

was first described by Swedish zoologist

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...

in the 10th edition of ''Systema Naturae'' in 1758. Although zoologist

Theodor Haltenorth Dr. Theodor Haltenorth (May 18, 1910 – January 30, 1981) was a German mammalogist. He worked mainly in Munich, Bavaria, Germany, and was a key figure in the Quagga Project. He also taxonomised the Cretan wildcat The Cretan wildcat is a me ...

considered ''G. d. pelzelnii'' to be an independent species, the following six

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

are identified: *''G. d.'' subsp. ''beccarii'' De Beaux, 1931 – Eritrean dorcas gazelle *''G. d.'' subsp. ''dorcas'' (Linnaeus, 1758) – Egyptian dorcas gazelle *''G. d.'' subsp. ''isabella''

Gray Grey (more common in British English) or gray (more common in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it is "without color", because it can be composed o ...

, 1846 – Isabelle dorcas gazelle *''G. d.'' subsp. ''massaesyla'' Cabrera, 1928 – Moroccan dorcas gazelle *''G. d.'' subsp. ''osiris'' Blaine, 1913 – Saharan (or Saharawi) dorcas gazelle (synonym of ''G. d.'' subsp. ''neglecta'') *''G. d.'' subsp. ''pelzelnii'' Kohl, 1886 – Pelzeln's gazelle *''G. d.'' subsp. ''saudiya''

Carruthers Carruthers, sometimes Caruthers, is a Scottish people, Scottish surname and Clan Carruthers, clan, originating from the lands of Carruthers in Dumfriesshire. The place name is derived from the Cumbric language, Cumbric elements ''ker'' ("fort") and ...

& Schwarz, 1935 -

Saudi gazelle The Saudi gazelle (''Gazella saudiya'') is a ''Gazella'' species that was once native to the Arabian Peninsula. It was declared extinct in the wild in 1996, as it was last observed in the wild in 1970. The Saudi gazelle was officially declared ex ...

File:Maroccan dorcas gazelle (Gazella dorcas massaesyla).jpg, ''G. d. massaesyla'',

Souss-Massa National Park The Souss-Massa National Park (''Parc National de Souss-Massa'') is a 33,800 hectare national park on the Atlantic coast of Morocco which was created in 1991. It lies between Agadir to the north and Sidi Ifni to the south and its centre is at 9° ...

Morocco Morocco (),, ) officially the Kingdom of Morocco, is the westernmost country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to ...

File:The book of antelopes (1894) Gazella dorcas.png, Illustration of ''G. d. dorcas''. File:The book of antelopes (1894) Gazella isabella.png, Illustration of ''G. d. isabella'' File:The book of antelopes (1894) Gazella pelzelni.png, Illustration of ''G. d. pelzelni'' File:GaseladorcasBCN2.JPG, ''G. d. osiris'' at Barcelona Zoo File:Compléments_de_Buffon_(6289273740).jpg, Illustration of ''G. d. saudiya''

Description

The contemporary land mammals of Egypt (including Sinai) (1980) Fig

The dorcas gazelle is similar in appearance to, yet smaller than, the closely related

mountain gazelle The mountain gazelle (''Gazella gazella''), also called the Palestine mountain gazelle, is a species of gazelle widely but unevenly distributed. Description Mountain gazelle are one of the few mammals in which both sexes have horns. Males ha ...

(''Gazella gazella''). Dorcas gazelles have longer ears and more strongly curved horns, which bow outwards then turn inwards and forwards at the tips. Individuals belonging to the

Sahara , photo = Sahara real color.jpg , photo_caption = The Sahara taken by Apollo 17 astronauts, 1972 , map = , map_image = , location = , country = , country1 = , ...

n subspecies (''G. d. osiris'') have very pale, fawn-colored coats. The white underside is bordered with a brown stripe, above which is a sandy stripe. The forehead and face are darker than the body. Subspecies from north of the Sahara tend to be more ochre in color, and have dark flanks and facial stripes. Populations in

Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...

and around the

Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; T ...

are darker and more reddish. In the last century, the populations of dorcas gazelle were partially destroyed in all the countries where it was found. Currently, large populations of dorcas gazelles are found in the

Negev The Negev or Negeb (; he, הַנֶּגֶב, hanNegév; ar, ٱلنَّقَب, an-Naqab) is a desert and semidesert region of southern Israel. The region's largest city and administrative capital is Beersheba (pop. ), in the north. At its southe ...

and the Arava, with other large populations in

Sudan Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic t ...

Iraq Iraq,; ku, عێراق, translit=Êraq officially the Republic of Iraq, '; ku, کۆماری عێراق, translit=Komarî Êraq is a country in Western Asia. It is bordered by Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq ...

, and the southern part of the eastern desert of

Egypt Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia via a land bridge formed by the Sinai Peninsula. It is bordered by the Mediter ...

. In Israel, only 1000–1500 gazelles remain.

Behaviour

Dorcas gazelles are highly adapted to the desert; they can go their entire lives without drinking, as they can get all of the moisture they need from the plants in their diets, though they do drink when water is available. They are able to withstand high temperatures. Except when it is very hot, they are active mainly from dusk to dawn. In areas where they face human predation, they tend to be active only at night to minimise the risk of falling prey to hunters. These gazelles feed on leaves, flowers, and pods of many species of

acacia ''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...

trees, as well as the leaves, twigs and fruits of various bushes. They occasionally stand on their hind legs to browse through trees, and after rain, they have been observed digging out bulbs from the ground. Dorcas gazelles are able to run at speeds up to to . When threatened, they tail-twitch and make bouncing leaps with their heads held high (

stotting Stotting (also called pronking or pronging) is a behavior of quadrupeds, particularly gazelles, in which they spring into the air, lifting all four feet off the ground simultaneously. Usually, the legs are held in a relatively stiff position. Ma ...

), possibly to announce they have seen a predator.

Breeding

When conditions are harsh, dorcas gazelles live in pairs, but when conditions are more favorable, they join together in family herds with one adult male, several females, and young. During the breeding season, adult males tend to be territorial, and mark their range with dung middens. In most parts of their range, mating takes place from September to November. Gestation takes six months; a single fawn is typical, although twins have been reported in

Algeria ) , image_map = Algeria (centered orthographic projection).svg , map_caption = , image_map2 = , capital = Algiers , coordinates = , largest_city = capital , relig ...

. The newborn is well developed at birth, with fur and open eyes. Within the first hour, the fawn attempts to stand, and it will suckle on this first day of life. In the first two weeks, the young gazelle lies curled up in a scrape on the ground or beneath bushes while the mother grazes close by. The young then starts to follow its mother around and begins to take solid food. After around three months, the fawn stops suckling and is fully weaned. Some dorcas gazelles are also known for their dangerous behaviors when surrounded. There have been many reports of deaths involving them.

Threats

The population of this gazelle has declined throughout its range. Their natural predators include

human Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, ...

cheetah The cheetah (''Acinonyx jubatus'') is a large cat native to Africa and central Iran. It is the fastest land animal, estimated to be capable of running at with the fastest reliably recorded speeds being , and as such has evolved specialized ...

leopard The leopard (''Panthera pardus'') is one of the five extant species in the genus '' Panthera'', a member of the cat family, Felidae. It occurs in a wide range in sub-Saharan Africa, in some parts of Western and Central Asia, Southern Russia, a ...

s, Arabian wolves, and

lion The lion (''Panthera leo'') is a large Felidae, cat of the genus ''Panthera'' native to Africa and India. It has a muscular, broad-chested body; short, rounded head; round ears; and a hairy tuft at the end of its tail. It is sexually dimorphi ...

s. Due to human hunting, few large cats remain to prey on dorcas gazelles. Mostly unhealthy gazelles are caught successfully by predators, since the healthy gazelles tend to escape them. To escape the cheetah, the fastest of carnivores, they run extremely fast and make zigs-zags, as does the

Thomson's gazelle Thomson's gazelle (''Eudorcas thomsonii'') is one of the best known species of gazelles. It is named after explorer Joseph Thomson and is sometimes referred to as a "tommie". It is considered by some to be a subspecies of the red-fronted gazelle a ...

. The

serval The serval (''Leptailurus serval'') is a wild cat native to Africa. It is widespread in sub-Saharan countries, except rainforest regions. Across its range, it occurs in protected areas, and hunting it is either prohibited or regulated in ran ...

and

caracal The caracal (''Caracal caracal'') () is a medium-sized wild cat native to Africa, the Middle East, Central Asia, and arid areas of Pakistan and northwestern India. It is characterised by a robust build, long legs, a short face, long tufted e ...

also prey on juveniles. The biggest modern threat to this gazelle is ever-expanding human civilization, which shrinks the gazelle's habitat by converting it to farmland, and by introducing new flocks of domestic sheep and goats which compete with gazelles for grassland.

Trade

Dorcas gazelle pelts and horns are traded in Morocco for decorative and medicinal purposes, where they are the most commonly observed ungulate in markets, despite their protected status under Moroccan law. Given the relatively low numbers of wild dorcas gazelles in the country, if locally sourced, this trade could be having a significant negative impact on the local populations of this species.

References

External links

* ARKive
images and movies of the dorcas gazelle ''(Gazella dorcas)''
* Science magazine

{{Taxonbar, from=Q387240

dorcas gazelle The dorcas gazelle (''Gazella dorcas''), also known as the ariel gazelle, is a small and common gazelle. The dorcas gazelle stands about at the shoulder, with a head and body length of and a weight of . The numerous subspecies survive on vegeta ...

Antelopes of North Africa Mammals of Chad Mammals of West Africa Mammals of Djibouti Mammals of Eritrea Mammals of Ethiopia Mammals of the Middle East Mammals of Somalia Mammals of Sudan Fauna of the Sahara