Grey dwarf hamster

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Grey dwarf hamster
Grey Dwarf Hamster in habitat.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Cricetinae
Genus: Nothocricetulus
Species:
N. migratorius
Binomial name
Nothocricetulus migratorius
(Pallas, 1773)
Synonyms

Cricetulus migratorius

The grey dwarf hamster, grey hamster or migratory hamster (Nothocricetulus migratorius) is a species of rodent in the family Cricetidae. Its range extends from Eastern Europe through the Middle East, Russia and Central Asia to Mongolia and western China. The grey dwarf hamster has grey fur and a head-body length ranging from 85 to 120 mm (3.3 to 4.7 in). The International Union for Conservation of Nature has assessed its conservation status as being of "least concern". [1]

Contents

Taxonomy

Originally thought to be part of the genus Cricetulus , it has recently been moved to its own genus, Nothocricetulus. [1] [2]

Description

The grey dwarf hamster has a head-and-body length of between 85 and 120 mm (3.3–4.7 in) and a well-furred tail about one third as long as this. It weighs between 31 and 58 g (1.1–2.0 oz). [3] Its dental formula is 1.0.0.31.0.3.3. [4] It is a sandy brownish-grey colour above with whitish underparts, the white hairs often having gray bases. The ears are large and the skull flattened with a narrow rostrum. [3]

Distribution

The grey dwarf hamster is found in parts of Eastern Europe and Asia including Afghanistan, Armenia, Bulgaria, China, Iran, Iraq, Israel, Jordan, Kazakhstan, Lebanon, Moldova, Mongolia, Pakistan, Romania, Russia, Turkey, and Ukraine. It has been recorded from Greece but has not been seen there since about 1970. It mostly lives above 1,000 m (3,300 ft) and in the Pamir Mountains has been recorded at altitudes of up to 4,300 m (14,100 ft). It originally inhabited dry grasslands, arid steppes and semi-deserts, but it has spread into cultivated land and gardens, and even sometimes into buildings. It avoids moist locations, dense woodland and forests and is most common in sparsely-vegetated areas. [1]

Behaviour

The grey dwarf hamster is active at dusk and at night. It digs a deep burrow complex that may extend 150 cm (59 in) beneath the surface of the ground and which includes side passages, several nesting areas and chambers to store food for use in winter. It forages for roots, the green parts of plants and seeds, and also eats insects. It does not hibernate, breeding taking place during the summer, with up to three litters being produced annually. Litter size is usually six or seven, but ranges from one to thirteen. [3]

Status

The grey dwarf hamster has a very wide range and a large total population. In some areas such as the Balkans, it is rare but in others it is abundant, being more common than the house mouse (Mus musculus) in Armenia and Kyrgyzstan. The population trend is unknown, but no particular threats have been identified and it is present in many protected areas. The International Union for Conservation of Nature has therefore assessed this hamster's conservation status as being of "least concern". [1]

Related Research Articles

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Hamsters are rodents belonging to the subfamily Cricetinae, which contains 19 species classified in seven genera. They have become established as popular small pets. The best-known species of hamster is the golden or Syrian hamster, which is the type most commonly kept as a pet. Other hamster species commonly kept as pets are the three species of dwarf hamster, Campbell's dwarf hamster, the winter white dwarf hamster and the Roborovski hamster.

<span class="mw-page-title-main">Winter white dwarf hamster</span> Species of hamster kept as pets

The winter white dwarf hamster, also known as the Russian dwarf hamster, Djungarian hamster, Dzungarian hamster, striped dwarf hamster, Siberian hamster, or Siberian dwarf hamster, is one of three species of hamster in the genus Phodopus. It is ball-shaped and typically half the size of the Syrian hamster, so is called a dwarf hamster along with all Phodopus species. Features of the winter white hamster include a typically thick, dark grey dorsal stripe and furry feet. As winter approaches and the days shorten, the winter white dwarf hamster's dark fur is almost entirely replaced with white fur. In captivity, this does not usually happen as animals maintained as pets are generally housed indoors and exposed to artificial light that prevents the recognition of short winter daylengths. In the wild, they originate from the wheat fields of Kazakhstan, the meadows of Mongolia and Siberia, and the birch stands of Manchuria.

<span class="mw-page-title-main">Campbell's dwarf hamster</span> Species of hamster

Campbell's dwarf hamster is a species of hamster in the genus Phodopus. It was given its common name by Oldfield Thomas in honor of Charles William Campbell, who collected the first specimen in Mongolia on July 1, 1902. It is distinguished from the closely related Djungarian hamster as it has smaller ears and no dark fur on its crown. Campbell's dwarf hamster typically has a narrow dorsal stripe compared to the Djungarian hamster and grey fur on the stomach. This hamster may be raised in captivity and kept as a small pet.

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References

  1. 1 2 3 4 5 Kryštufek, B.; Bukhnikashvili, A.; Sozen, M. & Isfendiyaroglu, S. (2017) [errata version of 2016 assessment]. "Nothocricetulus migratorius". IUCN Red List of Threatened Species . 2016: e.T5528A115073390. doi: 10.2305/IUCN.UK.2016-3.RLTS.T5528A22391440.en . Retrieved 17 March 2022.
  2. "Nothocricetulus migratorius (Pallas, 1773)". ASM Mammal Diversity Database. American Society of Mammalogists . Retrieved 2023-04-13.
  3. 1 2 3 Smith, Andrew T.; Xie, Yan; Hoffmann, Robert S.; Lunde, Darrin; MacKinnon, John; Wilson, Don E.; Wozencraft, W. Chris (2010). A Guide to the Mammals of China. Princeton University Press. p. 244. ISBN   978-1-4008-3411-2.
  4. MacDonald, David; Priscilla Barret (1993). Mammals of Britain & Europe. Vol. 1. London: HarperCollins. pp. 237–238. ISBN   0-00-219779-0.