The northern three-toed jerboa (''Dipus sagitta'') is a species of
rodent
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are na ...
in the family
Dipodidae
Jerboas (from ar, جربوع ') are hopping desert Rodent, rodents found throughout North Africa and Asia, and are members of the family Dipodidae. They tend to live in hot deserts.
When chased, jerboas can run at up to . Some species are pre ...
. It is the only extant species within the genus ''Dipus''.
[
It ranges across ]Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
, Uzbekistan
Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked cou ...
, Turkmenistan
Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...
, 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 ...
, Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
, China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
and 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, ...
. A common species, the International Union for Conservation of Nature
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 ...
rates it as being of "least concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...
".
Description
The northern three-toed jerboa has a head-and-body length of and a tail of . The weight is between . The upper parts are ochre-brown to reddish-brown, a white band stretches from the base of the tail across the hips, and the underparts are white. The hind feet have three toes, the central three metatarsal bones
The metatarsal bones, or metatarsus, are a group of five long bones in the foot, located between the tarsal bones of the hind- and mid-foot and the phalanges of the toes. Lacking individual names, the metatarsal bones are numbered from the medi ...
having fused to form a single structure. They have long white hairs on their upper surfaces and pads of stiff hairs under the toes. The long tail has a terminal tassel which is black with a white tip.
Distribution and habitat
This jerboa has a range extending from the Don River
The Don ( rus, Дон, p=don) is the fifth-longest river in Europe. Flowing from Central Russia to the Sea of Azov in Southern Russia, it is one of Russia's largest rivers and played an important role for traders from the Byzantine Empire.
Its ...
and the Caspian Sea
The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia ...
region, through Turkmenistan, Uzbekistan, Northern Iran and Kazakhstan, to Mongolia and Northern China. It lives in sandy deserts and semi-deserts, sandy pastures and pine forests on sandy ground. Although typically found between about , it occurs as high as in the Altai Mountains
The Altai Mountains (), also spelled Altay Mountains, are a mountain range in Central Asia, Central and East Asia, where Russia, China, Mongolia and Kazakhstan converge, and where the rivers Irtysh and Ob River, Ob have their headwaters. The m ...
.[
]
Ecology
The northern three-toed jerboa either lives alone or in pairs. It occupies an extensive home range in which there may be several burrows, several shallow temporary burrows and one main deep burrow. This has a steeply sloping main tunnel which then turns at an angle and ends in a nesting chamber, with several side chambers for the storage of food. The animal excavates the tunnel with its fore limbs, using its teeth to cut roots, and pushes soil out with its hind feet or nose, forming a characteristic fan-like mound of waste material. The burrow may be long and up to deep, and the animal can excavate passages at the rate of in ten minutes or so.
The species is nocturnal
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite.
Nocturnal creatures generally have highly developed sens ...
and emerges after dark to forage primarily for seeds, but also eats grasses, shoots, leaves, bulbs, roots and insects. It moves bipedally
Bipedalism is a form of terrestrial locomotion where an organism moves by means of its two rear limbs or legs. An animal or machine that usually moves in a bipedal manner is known as a biped , meaning 'two feet' (from Latin ''bis'' 'double' a ...
, normally making hops that are about long, but making great bounds of when agitated. Breeding takes place during the summer with two or three litters, each averaging three or four young, being produced after a gestation
Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). It is typical for mammals, but also occurs for some non-mammals. Mammals during pregna ...
period of 25 to 30 days. In the north of its range, this jerboa hibernates during the winter deep underground, usually from about November to March.[
In the man-made desert known as ]Aralkum
The Aralkum Desert is a desert that has appeared since 1960 on the seabed once occupied by the Aral Sea. It lies to the south and east of what remains of the Eastern Basin Aral Sea in Uzbekistan and Kazakhstan. It is currently the youngest deser ...
that has been formed as a result of the shrinkage of the Aral Sea
The Aral Sea ( ; kk, Арал теңізі, Aral teñızı; uz, Орол денгизи, Orol dengizi; kaa, Арал теңизи, Aral teńizi; russian: Аральское море, Aral'skoye more) was an endorheic basin, endorheic lake lyi ...
, the northern three-toed jerboa has made use of the new habitat where it lives alongside other small rodents including the Libyan jird
The Libyan jird (''Meriones libycus'') is a species of rodent in the family Muridae. It is found in Mauritania, Morocco, Algeria, Tunisia, Libya, Egypt, Jordan, Syria, Saudi Arabia, Iran, Iraq, Afghanistan, Turkmenistan, Uzbekistan, Kazakhstan an ...
, the midday jird
The midday jird (''Meriones meridianus''), also called midday gerbil, is a rodent species in the family Muridae and native to sandy deserts in Central and East Asia. It has been listed on the IUCN Red List as Least Concern since 2008.
Descript ...
and the great gerbil
The great gerbil (''Rhombomys opimus'') is a large rodent found throughout much of Central Asia.
Description
The largest of the gerbils, great gerbils have a head and body length of . Their skulls are distinctive by having two grooves in each i ...
. These rodents are about four times more abundant on the dried-up seabed than in the surrounding terrain, and the presence of this abundance of rodent prey
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the ...
has attracted carnivore
A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...
s such as the red fox
The red fox (''Vulpes vulpes'') is the largest of the true foxes and one of the most widely distributed members of the Order (biology), order Carnivora, being present across the entire Northern Hemisphere including most of North America, Europe ...
, the corsac fox
The corsac fox (''Vulpes corsac''), also known simply as a corsac, is a medium-sized fox found in steppes, semi-deserts and deserts in Central Asia, ranging into Mongolia and northern China. Since 2004, it has been classified as ''least concern ...
, the steppe polecat
The steppe polecat (''Mustela eversmanii''), also known as the white or masked polecat, is a species of mustelid native to Central and Eastern Europe and Central Asia. It is listed as Least Concern on the IUCN Red List because of its wide distrib ...
, the marbled polecat
The marbled polecat (''Vormela peregusna'') is a small mammal belonging to the monotypic genus ''Vormela'' within the mustelid subfamily Ictonychinae. ''Vormela'' is from the German word , which means "little worm". The specific name ''peregusn ...
and the Turkestan wildcat
The Asiatic wildcat (''Felis lybica ornata''), also known as the Asian steppe wildcat and the Indian desert cat, is an African wildcat subspecies that occurs from the eastern Caspian Sea north to Kazakhstan, into western India, western China and ...
.
Status
''Dipus sagitta'' is a common species in suitable habitat across its wide range. It is presumed to have a large total population and is a pioneering species, often being the first small rodent to occupy new habitat, such as the drying seabed of the Aral Sea
The Aral Sea ( ; kk, Арал теңізі, Aral teñızı; uz, Орол денгизи, Orol dengizi; kaa, Арал теңизи, Aral teńizi; russian: Аральское море, Aral'skoye more) was an endorheic basin, endorheic lake lyi ...
. No specific threats to this species have been identified, and the International Union for Conservation of Nature
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 ...
has assessed its conservation status as being of "least concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...
".[
]
References
Further reading
{{Taxonbar, from=Q929776
Dipodidae
Jerboa, Northern Three-toed
Mammals described in 1773
Taxonomy articles created by Polbot