Thomson's gazelle (Eudorcas thomsonii) is one of the best-known gazelles. It is named after explorer Joseph Thomson and is sometimes referred to as a "tommie". 50–55 miles per hour (80–90 km/h). It is the fifth-fastest land animal, after the cheetah (its main predator), pronghorn, springbok, and wildebeest.It is considered by some to be a subspecies of the red-fronted gazelle and was formerly considered a member of the genus Gazella within the subgenus Eudorcas, before Eudorcas was elevated to genus status. Thomson's gazelles can be found in numbers exceeding 550,000 in Africa and are recognized as the most common type of gazelle in East Africa. The Thomson's gazelle can reach speeds of
A gazelle is any of many antelope species in the genus Gazella. This article also deals with the six species included in two further genera, Eudorcas and Nanger, which were formerly considered subgenera of Gazella. A third former subgenus, Procapra, includes three living species of Asian gazelles.
Joseph Thomson was a Scottish geologist and explorer who played an important part in the Scramble for Africa. Thomson's gazelle and Thomson's Falls, Nyahururu, are named after him. Excelling as an explorer rather than an exact scientist, he avoided confrontations among his porters or with indigenous peoples, neither killing any native nor losing any of his men to violence. His motto is often quoted to be "He who goes gently, goes safely; he who goes safely, goes far."
The red-fronted gazelle is widely but unevenly distributed gazelle across the middle of Africa from Senegal to northeastern Ethiopia. It is mainly resident in the Sahel zone, a narrow cross-Africa band south of the Sahara, where it prefers arid grasslands, wooded savannas and shrubby steppes.
The scientific name of Thomson's gazelle is Eudorcas thomsonii. It is a member of the genus Eudorcas and is classified under the family Bovidae. Thomson's gazelle was first described by British zoologist Albert Günther in 1884.The relationships between Thomson's gazelle and the congeneric Mongalla gazelle (E. albonotata) remain disputed; while some authors such as Alan W. Gentry of the (Natural History Museum, London) consider the Mongalla gazelle to be a subspecies of Thomson's gazelle, others (such as Colin Groves) consider the Mongalla gazelle to be a full species. Zoologist Jonathan Kingdon treated Heuglin's gazelle, sometimes considered a species of Eudorcas (E. tilonura) or a subspecies of the red-fronted gazelle (E. r. tilonura), as a subspecies of Thomson's gazelle. Thomson's gazelle is named after the Scottish explorer Joseph Thomson; the first recorded use of the name dates to 1897. Another common name for the gazelle is "tommy".
Eudorcas is a genus of antelope; the species are commonly called gazelles. Eudorcas was originally considered a subgenus of the genus Gazella but has since been elevated to generic status. The four species within the genus Eudorcas are:
Family is one of the eight major hierarcical taxonomic ranks in Linnaean taxonomy; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as being the "walnut family".
The Bovidae are the biological family of cloven-hoofed, ruminant mammals that includes bison, African buffalo, water buffalo, antelopes, wildebeest, impala, gazelles, sheep, goats, muskoxen, and domestic cattle. A member of this family is called a bovid. With 143 extant species and 300 known extinct species, the family Bovidae consists of eight major subfamilies apart from the disputed Peleinae and Pantholopinae. The family evolved 20 million years ago, in the early Miocene.
Antilope , Eudorcas , Gazella , and Nanger form a clade within their tribe Antilopini. A 1999 phylogenetic analysis showed that Antilope is the closest sister taxon to Gazella,although the earliest phylogeny, proposed in 1976, placed Antilope as sister to Nanger. In a more recent revision of the phylogeny of the Antilopini on the basis of nuclear and mitochondrial data in 2013, Eva Verena Bärmann (of the University of Cambridge) and colleagues constructed a cladogram that clearly depicted the close relationship between Nanger and Eudorcas. Antilope and Gazella were found to have a similar relationship.
Nanger is a genus of antelopes, commonly called gazelles. Nanger was originally considered a subgenus within the genus Gazella, but has since been elevated to genus status. The three species within the genus Nanger are:
A clade, also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
In biology, a tribe is a taxonomic rank above genus, but below family and subfamily. It is sometimes subdivided into subtribes.
Two subspecies are identified:
Axel Johann Einar Lönnberg was a Swedish zoologist and conservationist. Lönnberg was born in Stockholm. He was head of the Vertebrate Department of the Naturhistoriska Riksmuseet from 1904 to 1933.
The Serengeti ecosystem is a geographical region in Africa. It is located in northern Tanzania. It spans approximately 30,000 km2 (12,000 sq mi).
Kenya, officially the Republic of Kenya, is a country in Africa with 47 semiautonomous counties governed by elected governors. At 580,367 square kilometres (224,081 sq mi), Kenya is the world's 48th largest country by total area. With a population of more than 52.2 million people, Kenya is the 27th most populous country. Kenya's capital and largest city is Nairobi while its oldest city and first capital is the coastal city of Mombasa. Kisumu City is the third largest city and a critical inland port at Lake Victoria. Other important urban centres include Nakuru and Eldoret.
Thomson's gazelle is a relatively small gazelle; it stands 55–82 cm (22–32 in) at the shoulder. Males weigh 20–35 kg (44–77 lb), while the slightly lighter females weigh 15–25 kg (33–55 lb). The head-and-body length is typically between 80 and 120 cm (31 and 47 in). Kingdon noted that physical measurements show a decrease from the northern to the southern parts of the gazelle's range. Facial characteristics of the gazelle include white rings around the eyes, black stripes running from a corner of the eye to the nose, rufous stripes running from the horns to the nose, a dark patch on the nose, and a light forehead.
Rufous is a colour that may be described as reddish-brown or brownish-red, as of rust or oxidised iron. The first recorded use of rufous as a colour name in English was in 1782. However, the colour is also recorded earlier in 1527 as a diagnostic urine colour.
A horn is a permanent pointed projection on the head of various animals consisting of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent. In mammals, true horns are found mainly among the ruminant artiodactyls, in the families Antilocapridae (pronghorn) and Bovidae.
The coat is sandy brown to rufous; a distinctive black band runs across the flanks, from the upper foreleg to just above the upper hind leg. A buff band can be seen just above the black stripe. Short, black streaks mark the white rump. The black tail measures 15–27 cm (5.9–10.6 in). Males have well-developed preorbital glands near the eyes, which are used for scent-marking territories. Both sexes possess horns that curve slightly backward with the tips facing forward. The horns, highly ringed, measure 25–43 cm (9.8–16.9 in) on males and 7–15 cm (2.8–5.9 in) on females. However, females have highly fragile horns; some are even hornless. Grant's gazelle is very similar to Thomson's gazelle, but can be differentiated by its larger size and a large white patch on the rump.
Coat is the nature and quality of a mammal's pelage. In the animal fancy, coat is an attribute that reflects the quality of a specimen's breeding as well as the level of the animal's care, conditioning, and management. Coat is an integral aspect of the judging at competitions such as a conformation dog show, a cat show, a horse show, or a rabbit show.
The preorbital gland is a paired exocrine gland found in many species of hoofed animals, 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.
In ethology, territory is the sociographical area that an animal of a particular species consistently defends against conspecifics. Animals that defend territories in this way are referred to as territorial.
The two subspecies differ markedly in their appearance. The eastern Thomson's gazelle is the larger of the two, with fainter facial markings. The Serengeti Thomson's gazelle, though, has a whiter face with more conspicuous markings. The horns of females are shorter than those of males to a greater degree in the eastern Thomson's gazelle; moreover, the horns are more divergent in the eastern Thomson gazelle.
Thomson's gazelle lives in Africa's savannas and grassland habitats, particularly the Serengeti region of Kenya and Tanzania. It has narrow habitat preferences, preferring short grassland with dry, sturdy foundation.It does, however, migrate into tall grassland and dense woodland. Gazelles are mixed feeders. In the wet seasons, they eat mainly fresh grasses, but during the dry seasons, they eat more browse, particularly foliage from bushes, forbs, and clovers.
Thomson's gazelles are dependent on short grass. 80 km/h (50 mph), to 96 km/h (60 mph) and zigzag, a peculiarity which often saves it from predators. Sometimes, they are also chased by leopards, lions, and hyenas, but the gazelles are faster and more agile; these predators attack especially the young or infirm individuals. They can also be prey to crocodiles and pythons, and their fawns are sometimes the prey of eagles, african wild dogs, jackals, and baboons. A noticeable behaviour of Thomson's gazelles is their bounding leap, known as stotting or pronking, used to startle predators and display strength.Their numbers are highly concentrated at the beginning of the rains since the grass grows quickly. They follow the larger herbivores, such as plains zebras and blue wildebeests as they mow down the tall grasses. Then, the gazelles spread out more. In the wild, Thomson's gazelles can live 10–15 years. Their major predators are cheetahs, which are able to attain higher speeds, but gazelles can outlast them in long chases and are able to make turns more speedily. This small antelope-gazelle can run extremely fast, from
During the wet season, a time when grass is abundant, adult male gazelles graze extensively. They spread out more and establish breeding territories.Younger males usually spend their time in bachelor groups, and are prevented from entering the territories. Females form migratory groups that enter the males' territories, mostly the ones with the highest-quality resources. As the female groups pass through and forage, the territorial males may try to herd them, and are usually successful in preventing single females from leaving, but not whole groups. Subadult males usually establish dominance through actual combat, while adults are more likely to do rituals. If a bachelor male should be passing through a territorial male's region, the male will chase the offender out of his territory.
When patrolling his territory, a male may use his horns to gore the grass, soil, or a bush.Males also mark grass stems with their preorbital glands, which emit a dark secretion. Territories of different males may share a boundary. When territorial males meet at the border of their territories, they engage in mock fights in which they rush towards each other as if they are about to clash, but without touching. After this, they graze in a frontal position, then in parallel and them in reverse, and move away from each other while constantly grazing. These rituals have no victor, but merely maintain the boundaries of the territories. Territorial males usually do not enter another male's territory. If a male is chasing an escaping female, he will stop the chase if she runs into another territory, but the neighboring male will continue the chase.
A male gazelle follows a female and sniffs her urine to find out if she is in estrus, a process known as the Flehmen response.If so, he continues to court and mount her. Females leave the herd to give birth to single fawns after a five- to six-month gestation period. They give birth twice yearly with one or two fawns. When birthing, a female gazelle crouches as the newborn fawn drops to the ground, tearing the umbilical cord. The mother then licks the fawn clean of amniotic fluid and tissues. In addition, licking possibly also serves to stimulate the fawn's blood circulation, or to "label" it so its mother can recognize it by scent.
In the first six hours of the fawn's life, it moves and rests with its mother, but eventually spends more time away from its mother or hides in the grass.The mother stays in the vicinity of the fawn and returns to nurse it daily. Mother and fawn may spend an hour together before the fawn goes and lies back down to wait for the next nursing. Mother gazelles may associate with other gazelle mothers, but the fawns do not gather into "kindergartens". Mothers defend their young against jackals and baboons, but not against larger predators. Sometimes, a female can fend off a male baboon by headbutting him with her horns to defend her fawn.
As the fawn approaches two months of age, it spends more time with its mother and less time hiding. Eventually, it stops hiding.Around this time, the fawn starts eating solid food, but continues to nurse from its mother. The pair also joins a herd. Young female gazelles may associate with their mothers as yearlings. Young males may also follow their mothers, but as they reach adolescence, they are noticed by territorial males, so cannot follow their mothers into territories. The mother may follow and stay with him, but eventually stops following him when he is driven away; the male will then join a bachelor group.
The population estimate is around 550,000. The population had declined 60% from 1978 to 2005.Threats to Thomson's gazelles are tourist impacts, habitat modification, fire management, and road development. Surveys have reported steep declines (60-70%) over periods of about 20 years dating from the late 1970s in several places, including the main strongholds for the species: Serengeti, Masai Mara, and Ngorongoro.
References to the Thomson's gazelle were an occasional running gag in Monty Python's Flying Circus .
The 2016 Disney film Zootopia features an anthropomorphic Thomson's gazelle pop star, voiced by Shakira.
The springbok is a medium-sized antelope found mainly in southern and southwestern 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.
An antelope is a member of a number of even-toed ungulate species indigenous to various regions in Africa and Eurasia. Antelopes comprise a wastebasket taxon within the family Bovidae, encompassing those Old World species that are not cattle, sheep, buffalo, bison, or goats; even so, antelope are generally more deer-like than other bovids. A group of antelope is called a herd.
The impala ; is a medium-sized antelope found in eastern and southern Africa. The sole member of the genus Aepyceros, it was first described to European audiences by German zoologist Hinrich Lichtenstein in 1812. Two subspecies are recognised—the common impala, and the larger and darker black-faced impala. The impala reaches 70–92 centimetres 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 centimetres long.
The kob is an antelope found across Central Africa and parts of West Africa and East Africa. Together with the closely related reedbucks, waterbucks, lechwe, Nile lechwe, and puku, it forms the Reduncinae tribe. Found along the northern savanna, it is often seen in Murchison Falls and Queen Elizabeth National Park, Uganda; Garamba and Virunga National Park, and the Democratic Republic of the Congo, as well as grassy floodplains of South Sudan. Kob are found in wet areas, where they eat grasses. Kob are diurnal, but inactive during the heat of the day. They live in groups of either females and calves or just males. These groups generally range from five to 40 animals.
The gerenuk, also known as the giraffe gazelle, is a long-necked antelope found in the Horn of Africa and the drier parts of East Africa. The sole member of the genus Litocranius, the gerenuk was first described by the naturalist Victor Brooke in 1878. It is characterised by its long, slender neck and limbs. The antelope is 80–105 centimetres (31–41 in) tall, and weighs between 28 and 52 kilograms. Two types of colouration are clearly visible on the smooth coat: the reddish brown back or the "saddle", and the lighter flanks, fawn to buff. The horns, present only on males, are lyre-shaped. Curving backward then slightly forward, these measure 25–44 centimetres (9.8–17.3 in).
The blackbuck, also known as the Indian antelope, is an antelope found in India, Nepal and Pakistan. The blackbuck is the sole extant member of the genus Antilope. The species was described and given its binomial name by Swedish zoologist Carl Linnaeus in 1758. Two subspecies are recognized. It stands up to 74 to 84 cm high at the shoulder. Males weigh 20–57 kilograms (44–126 lb), an average of 38 kilograms (84 lb). Females are lighter, weighing 20–33 kilograms (44–73 lb) or 27 kilograms (60 lb) on an average. The long, ringed horns, 35–75 centimetres (14–30 in) long, are generally present only on males, though females may develop horns as well. The white fur on the chin and around the eyes is in sharp contrast with the black stripes on the face. The coat of males shows two-tone colouration: while the upper parts and outsides of the legs are dark brown to black, the underparts and the insides of the legs are all white. On the other hand, females and juveniles are yellowish fawn to tan.
The red gazelle was thought to be an extinct species of gazelle. It was formerly considered a member of the genus Gazella within the subgenus Eudorcas before Eudorcas was promoted to a full genus. It was thought to have lived in the better-watered mountain areas of North Africa rather than in deserts, because of the rich colouring on the coat.
The dorcas gazelle, also known as the ariel gazelle, is a small and common gazelle. The dorcas gazelle stands about 55–65 cm (1.8-2.1 ft) at the shoulder, with a head and body length of 90–110 cm (3-3.6 ft) and a weight of 15–20 kg (33-44 lb). The numerous subspecies survive on vegetation in grassland, steppe, wadis, mountain desert and in semidesert climates of Africa and Arabia. About 35,000 - 40,000 exist in the wild. The extinct Saudi gazelle from the Arabian Peninsula has been previously considered as a subspecies of the dorcas gazelle.
The Antilopinae are a subfamily of Bovidae. The gazelles, blackbucks, springboks, gerenuks, dibatags, and Central Asian gazelles are often referred to as "true antelopes", and are usually classified as the only representatives of the Antilopinae. True antelopes occur in much of Africa and Asia, with the highest concentration of species occurring in East Africa in Sudan, Eritrea, Ethiopia, Somalia, Kenya, and Tanzania. The saigas and Tibetan antelopes are related to true antelopes (Antilopinae) and goats (Caprinae), but often placed in their own subfamily, Saiginae. These animals inhabit much of central and western Asia. The dwarf antelopes are sometimes placed in a separate subfamily, Neotraginae, and live entirely in sub-Saharan Africa.
The mountain gazelle is a species of gazelle widely but unevenly distributed.
The rhim gazelle or rhim, also known as the slender-horned gazelle, 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. These gazelles are found in Algeria, Chad, Egypt, Libya and Sudan.
The oribi is a small antelope found in eastern, southern and western Africa. The sole member of its genus, the oribi was first described by the German zoologist Eberhard August Wilhelm von Zimmermann in 1782. Eight subspecies are identified. The oribi reaches nearly 50–67 centimetres (20–26 in) at the shoulder and weighs 12–22 kilograms (26–49 lb). This antelope features a slightly raised back, and long neck and limbs. The glossy, yellowish to rufous brown coat contrasts with the white chin, throat, underparts and rump. Only males possess horns; the thin, straight horns, 8–18 centimetres (3.1–7.1 in) long, are smooth at the tips and ringed at the base.
The Soemmerring's gazelle, also known as Abyssinian mohr, is a gazelle species native to the Horn of Africa. The species was described and given its binomen by German physician Philipp Jakob Cretzschmar in 1828. Three subspecies are recognized. It is no longer present in Sudan.
The Grant's gazelle is a species of gazelle distributed from northern Tanzania to South Sudan and Ethiopia, and from the Kenyan coast to Lake Victoria. Its Swahili name is swala granti. It was named for a 19th-century Scottish explorer, Lt Col Grant.
The topi is a highly social and fast antelope subspecies of the common tsessebe, a species which belongs to the genus Damaliscus. They are found in the savannas, semi-deserts, and floodplains of sub-Saharan Africa.
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.
Antilopini is a tribe of medium-sized gazelles and dwarf antelopes that live in and around the Sahara, Horn of Africa, and Eurasia. The females have very short horns compared with the males, and they have smooth and glossy tan and white coats. Most species have black stripes and facial markings. They have a territorial male as a leader in herds and sometimes group with other species, such as Grant's gazelle joining with Thomson's gazelle. They top speeds of 50 mph and have the ability to jump and turn sharply. They have adapted well to running in open environments.
|Wikimedia Commons has media related to:|
|Wikispecies has information related to Gazella thomsonii|