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Grey dwarf hamster
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Cricetidae
Subfamily:	Cricetinae
Genus:	Nothocricetulus Lebedev et al., 2018
Species:	N. migratorius
Binomial name
Nothocricetulus migratorius (Pallas, 1773)
Synonyms
Mus migratorius Pallas, 1773 Cricetus migratorius (Pallas, 1773) Cricetulus migratorius (Pallas, 1773)

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".

Taxonomy

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

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). Its dental formula is 1.0.0.31.0.3.3. 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.

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.

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.

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".

References

1. ^ Kryštufek, B.; Bukhnikashvili, A.; Sozen, M. & Isfendiyaroglu, S. (2017) . "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. Lebedev, V. S.; Bannikova, A. A.; Neumann, K.; Ushakova, M. V.; Ivanova, N. V.; Surov, A. V. (26 February 2018). "Molecular phylogenetics and taxonomy of dwarf hamsters Cricetulus Milne-Edwards, 1867 (Cricetidae, Rodentia): description of a new genus and reinstatement of another". Zootaxa. 4387 (2): 343.
3. "Nothocricetulus migratorius (Pallas, 1773)". ASM Mammal Diversity Database. American Society of Mammalogists. Retrieved 2023-04-13.
4. ^ 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.
5. MacDonald, David; Priscilla Barret (1993). Mammals of Britain & Europe. Vol. 1. London: HarperCollins. pp. 237–238. ISBN 0-00-219779-0.

• Musser, G. G.; Carleton, M. D. (2005). "Superfamily Muroidea". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 894–1531. ISBN 978-0-8018-8221-0. OCLC 62265494.

v t e Myomorpha
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• IUCN Red List least concern species
• Hamsters
• Rodents of Europe
• Mammals of West Asia
• Mammals of Azerbaijan
• Mammals of Afghanistan
• Mammals of Pakistan
• Mammals of the Middle East
• Mammals described in 1773
• Taxa named by Peter Simon Pallas