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Northern collared lemming

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Northern collared lemming
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Cricetidae
Subfamily: Arvicolinae
Genus: Dicrostonyx
Species:
D. groenlandicus
Binomial name
Dicrostonyx groenlandicus
(Traill, 1823)
Northern collared lemming range (not including the Wrangel lemming)[1]
Synonyms

kilangmiutak Anderson & Rand, 1945
rubricatus (Richardson, 1889) vinogradovi Ognev, 1948

Collared lemming lying on ground

The northern collared lemming or Nearctic collared lemming (Dicrostonyx groenlandicus), sometimes called the Peary Land collared lemming in Canada, is a small lemming found in Arctic North America and Wrangel Island. At one time, it was considered to be a subspecies of the Arctic lemming (Dicrostonyx torquatus). Some sources believe several other species of collared lemmings found in North America are actually subspecies of D. groenlandicus.[2]

Description

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It has a short chunky body covered with thick grey fur with a thin black stripe along its back and light grey underparts.[citation needed] It has small ears, short legs and a very short tail.[citation needed] It has a pale brown collar across its chest.[citation needed] In winter, its fur turns white, and it has large digging claws on its front feet.[citation needed] It is 14 cm (5.5 in) long with a 1.5 cm (0.59 in) tail and weighs about 40 g (1 oz).[citation needed]

Distribution and habitat

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It is found in the tundra of northern Canada, Alaska and Greenland. A disjunct population is also present on Wrangel Island in Siberia; this population was formerly considered its own species, the Wrangel lemming (D. vinogradovi).[3][4][5]

Diet

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It feeds on grasses, sedges and other green vegetation in summer, and twigs of willow, aspen and birches in winter.[citation needed]

Predators

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Predators include snowy owls, gulls, wolverines, the Arctic fox and the polar bear.[citation needed]

Breeding

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Female lemmings have two or three litters of four to eight young in a year. The young are born in a nest in a burrow or concealed in vegetation.[citation needed]

Behaviour

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It is active year-round, day and night.[citation needed] It makes runways through the surface vegetation and also digs burrows above the permafrost.[citation needed] It burrows under the snow in winter.[citation needed] Lemming populations go through a three- or four-year cycle of boom and bust.[citation needed] When their population peaks, lemmings disperse from overcrowded areas.[citation needed]

References

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  1. ^ a b Cassola, F. (2017) [errata version of 2016 assessment]. "Dicrostonyx groenlandicus". IUCN Red List of Threatened Species. 2016: e.T42618A115195764. doi:10.2305/IUCN.UK.2016-3.RLTS.T42618A22331908.en.
  2. ^ 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. 971–972. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. ^ Gerrie, R. & Kennerley, R. (2017) [errata version of 2016 assessment]. "Dicrostonyx vinogradovi". IUCN Red List of Threatened Species. 2016: e.T6569A115082805. doi:10.2305/IUCN.UK.2016-3.RLTS.T6569A22331837.en. Retrieved 2021-09-05.
  4. ^ "Dicrostonyx groenlandicus (Traill, 1823)". ASM Mammal Diversity Database. American Society of Mammalogists. Retrieved 2021-09-05.
  5. ^ "The Mammals of Russia: A Taxonomic and Geographic Reference". ResearchGate. Retrieved 2021-09-05.