The Mongolian wild ass (''Equus hemionus hemionus''), also known as Mongolian khulan, is the
nominate 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 ...
of the
onager
The onager (; ''Equus hemionus'' ), A new species called the kiang (''E. kiang''), a Tibetan relative, was previously considered to be a subspecies of the onager as ''E. hemionus kiang'', but recent molecular studies indicate it to be a distinct ...
. It is found in southern
Mongolia
Mongolia; Mongolian script: , , ; lit. "Mongol Nation" or "State of Mongolia" () is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of , with a population of just 3.3 million, ...
and
northern China
Northern China () and Southern China () are two approximate regions within China. The exact boundary between these two regions is not precisely defined and only serve to depict where there appears to be regional differences between the climate ...
. It was previously found in eastern
Kazakhstan
Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...
and southern
Siberia
Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part of ...
before being extirpated there through
hunting
Hunting is the human activity, human practice of seeking, pursuing, capturing, or killing wildlife or feral animals. The most common reasons for humans to hunt are to harvest food (i.e. meat) and useful animal products (fur/hide (skin), hide, ...
. As of 2015, the Mongolian wild ass is listed as
Near Threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...
by the
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
.
[ Current population estimates are approximately 42,000 individuals in Mongolia and around 5,000 individuals in Northern China.
]
Taxonomy and etymology
The Mongolian wild ass is synonymous with the Gobi khulan (''Equus hemionus luteus''),[ also called the ''chigetai'', dziggetai or simply ', mn, Хулан.]
Habitat and population
The Mongolian wild ass has become primarily confined to the desert-steppe, semi-desert and 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 ...
s habitats of Gobi Desert
The Gobi Desert (Chinese: 戈壁 (沙漠), Mongolian: Говь (ᠭᠣᠪᠢ)) () is a large desert or brushland region in East Asia, and is the sixth largest desert in the world.
Geography
The Gobi measures from southwest to northeast an ...
.
The Mongolian wild ass is the most widespread subspecies, although despite that, the subspecies lost about 50% of its former distribution range in Mongolia in the past 70 years. The former range of the Asiatic wild ass in East Asia between the seventeenth and the middle of the nineteenth century encompassed the greater part of Mongolia, areas of Siberia and Manchuria
Manchuria is an exonym (derived from the endo demonym " Manchu") for a historical and geographic region in Northeast Asia encompassing the entirety of present-day Northeast China (Inner Manchuria) and parts of the Russian Far East (Outer Manc ...
, the western part of Inner Mongolia
Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a ...
and the northern part of Xinjiang
Xinjiang, SASM/GNC: ''Xinjang''; zh, c=, p=Xīnjiāng; formerly romanized as Sinkiang (, ), officially the Xinjiang Uygur Autonomous Region (XUAR), is an autonomous region of the People's Republic of China (PRC), located in the northwest ...
. Its distribution range
Species distribution —or species dispersion — is the manner in which a biological taxon is spatially arranged. The geographic limits of a particular taxon's distribution is its range, often represented as shaded areas on a map. Patterns of ...
then dramatically reduced during the 1990s. A 1994–1997 survey estimated its population size
In population genetics and population ecology, population size (usually denoted ''N'') is the number of individual organisms in a population. Population size is directly associated with amount of genetic drift, and is the underlying cause of effect ...
at 33,000 to 63,000 individuals over a continuous distribution range encompassing all of southern Mongolia. In 2003, a new survey found approximately 20,000 individuals over an area of in southern Mongolia. The species had decreased to 14,000 individuals in 2009. The population estimates of the Mongolian population should be treated with caution due to a lack of proven survey protocols.
Biology and behavior
The Mongolian wild ass are herbivorous mammals. They feed on grass
Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...
es, herb
In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal ...
s and vegetation
Vegetation is an assemblage of plant species and the ground cover they provide. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic character ...
. They also feed on shrubs and trees in drier habitats. During spring and summer in Mongolia, the succulent plants of the family Zygophyllaceae
Zygophyllaceae is a family of flowering plants that contains the bean-caper and caltrop. The family includes around 285 species in 22 genera.
Plants in the family Zygophyllaceae may be trees, shrubs, or herbs. They are often found in dry habit ...
form an important component of the diet of the Mongolian wild ass.
Mongolian khulans are known to dig holes at dry river beds and water sources to access to subsurface water to drink in response of the lack of water during hot summers in the Gobi Desert. Watering holes dug by khulans are also used by other species (wild and domestic) as well as by humans to access to water.
Threats
The Mongolian wild ass population is declining due to poaching
Poaching has been defined as the illegal hunting or capturing of wild animals, usually associated with land use rights.
Poaching was once performed by impoverished peasants for subsistence purposes and to supplement meager diets. It was set a ...
and competition
Competition is a rivalry where two or more parties strive for a common goal which cannot be shared: where one's gain is the other's loss (an example of which is a zero-sum game). Competition can arise between entities such as organisms, indivi ...
from grazing livestock
Livestock are the domesticated animals raised in an agricultural setting to provide labor and produce diversified products for consumption such as meat, eggs, milk, fur, leather, and wool. The term is sometimes used to refer solely to animals ...
. The conservation status
The conservation status of a group of organisms (for instance, a species) indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation ...
of the species is evaluated as endangered
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...
.[
The Mongolian khulan are threatened by apex predators such as ]gray wolves
The wolf (''Canis lupus''; : wolves), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of ''Canis lupus'' have been recognized, and gray wolves, as popularly u ...
, dhole
The dhole (''Cuon alpinus''; ) is a canid native to Central, South, East and Southeast Asia. Other English names for the species include Asian wild dog, Asiatic wild dog, Indian wild dog, whistling dog, red dog, red wolf, and mountain wolf. It ...
s and formerly by tiger
The tiger (''Panthera tigris'') is the largest living cat species and a member of the genus '' Panthera''. It is most recognisable for its dark vertical stripes on orange fur with a white underside. An apex predator, it primarily preys on u ...
s that became extinct within the regions.
Poaching for meat appears to be an increasing problem in Mongolia. For some parts of the local population, wild ass and other wildlife meat seems to provide a substitute or even a cheap alternative to meat from domestic animals. In 2005, a national survey based on questionnaire
A questionnaire is a research
Research is "creativity, creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, ...
s, suggested that as many as 4,500 wild asses, about 20% of the whole population, may be poached each year. Moreover, political changes in the early 1990s allowed urban populations to return to nomadic land use, resulting in a sharp increase in human and livestock numbers in many rural areas.
Political and societal changes have disrupted traditional land use patterns, weakened law enforcement and also changed attitudes towards the use of natural resources, e.g., making wildlife an "open access" resource. It is expected that the re-migration of people and their livestock will result in increased wildlife–human interactions and may well threaten the survival of rare wildlife species in the Gobi Desert
The Gobi Desert (Chinese: 戈壁 (沙漠), Mongolian: Говь (ᠭᠣᠪᠢ)) () is a large desert or brushland region in East Asia, and is the sixth largest desert in the world.
Geography
The Gobi measures from southwest to northeast an ...
.
Conservation actions
Since 1953, the Mongolian wild ass has been fully protected in Mongolia. The subspecies is also listed at appendix I of CITES
CITES (shorter name for the Convention on International Trade in Endangered Species of Wild Fauna and Flora, also known as the Washington Convention) is a multilateral treaty to protect endangered plants and animals from the threats of interna ...
(the Convention on the International Trade in Endangered Species of Wild Flora and Fauna) and was added to appendix II of the Convention of Migratory Species in 2002. However, due to human population growth in conjunction with severe winters in the past years,[United Nations Disaster Management Team (UNDMT): National Civil Defense and State Emergency Commission Ulaanbaatar. 2000. DZUD 2000-Mongolia: An evolving ecological, social and economic disaster: A rapid needs assessment report. United Nations Disaster Management Team (UNDMT): National Civil Defense and State Emergency Commission Ulaanbaatar] the number of conflicts between herder
A herder is a pastoral worker responsible for the care and management of a herd or flock of domestic animals, usually on open pasture. It is particularly associated with nomadic or transhumant management of stock, or with common land grazing. ...
s and Mongolian wild asses appear on the increase. Information on the basic biology of the subspecies and how it differs from others is lacking, which hampers conservation efforts.
In captivity
The Mongolian wild asses are rare in captivity in the world, though the captive animals are mostly found in China, such as in Beijing zoo
The Beijing Zoo is a zoological park in Xizhimen, Xicheng District, Beijing, the capital of the China. Founded in 1906 during the late Qing dynasty, it is the oldest zoo in china and oldest public park in northern China. The zoo is also a center ...
, Shanghai zoo
Shanghai Zoological Park (), or commonly Shanghai Zoo in short, is the main zoological garden in Shanghai. It is located near the township of Hongqiao (formerly Hung-Jao) and is administratively in Changning District. Shanghai Zoo was formerly k ...
and Kunming zoo at Yunnan
Yunnan , () is a landlocked Provinces of China, province in Southwest China, the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is ...
.
Related subspecies
* Turkmenian kulan
The Turkmenian kulan (''Equus hemionus kulan''), also called Transcaspian wild ass, Turkmenistani onager or simply the ', is a subspecies of onager (Asiatic wild ass) native to Central Asia. It was declared Endangered in 2016.
The species's popu ...
, ''Equus hemionus kulan''
* Persian onager
The Persian onager (''Equus hemionus onager''), also called the Persian wild ass or Persian zebra, is a subspecies of onager (Asiatic wild ass) native to Iran (Persia). It is listed as Endangered, with no more than 600 individuals left in the wil ...
(''gur''), ''Equus hemionus onager''
* Indian wild ass
The Indian wild ass (''Equus hemionus khur''), also called the Indian onager or, in the local Gujarati language, Ghudkhur and Khur, is a subspecies of the onager native to South Asia.
It is currently listed as Near Threatened by IUCN. The prev ...
(''khur''), ''Equus hemionus khur''
* Syrian wild ass
The Syrian wild ass (''Equus hemionus hemippus''), less commonly known as a hemippe, an achdari, or a Mesopotamian or Syrian onager, is an extinct subspecies of onager native to the Arabian peninsula and surrounding areas. It ranged across present ...
or hemippe, ''Equus hemionus hemippus'' (extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
)
See also
* Kiang
The kiang (''Equus kiang'') is the largest of the ''Asinus'' subgenus. It is native to the Tibetan Plateau, where it inhabits montane and alpine grasslands. Its current range is restricted to the plains of the Tibetan plateau; Ladakh; and north ...
or, Tibetan wild ass
* Mongolian horse
The Mongol horse ( Mongolian Адуу, ''aduu'': "horse" or ''mori''; or as a herd, ''ado'') is the native horse breed of Mongolia. The breed is purported to be largely unchanged since the time of Genghis Khan. Nomads living in the traditio ...
* Takhi
Przewalski's horse (, , (Пржевальский ), ) (''Equus ferus przewalskii'' or ''Equus przewalskii''), also called the takhi, Mongolian wild horse or Dzungarian horse, is a rare and endangered horse originally native to the steppes of Ce ...
* Horses in East Asian warfare
Horses in East Asian warfare are inextricably linked with the strategic and tactical evolution of armed conflict. A warrior on horseback or horse-drawn chariot changed the balance of power between civilizations.
When people with horses clashe ...
* Yakutian horse
The Yakutian ( sah, Саха ата, Sakha ata) or Yakut is a native horse breed from the Siberian Sakha Republic (or Yakutia) region. It is large compared to the otherwise similar Mongolian horse and Przewalski's horse. It is noted for its a ...
References
{{Taxonbar, from=Q2351107
Onager
Mammals of Mongolia
Mammals of China
Mammals of Central Asia
Mammals of Siberia
Gobi Desert
Near threatened animals
Near threatened biota of Asia
Mammals described in 1775