Overview

Distribution

Range Description

Distributed from forest steppe to semideserts in south of Western Siberia, Tuva, Trans-Baikal region, Mongolia, NE China, Primorye (Russia) and Korea.

In Mongolia found throughout the country with the exception of extreme western and south-western regions. It does not occur in Valley of the Lakes or around the Gobi Desert region, where C. sokolovi occurs (G. Shenbrot pers. comm.).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Inhabits arid country, including steppe and semi-desert habitats, although it adapts to and is commonly found in croplands. Sometimes found in buildings. Occupies a simple burrow system with 2-3 entrances; the circular opening has a diameter of 2-3 cm. The burrow runs to 1 m in length at a depth of 10-50 cm, and 4-5 branches end in nest or food storage areas. Nests are lined with grass. About 4-5 individuals (a maximum of eight) occupy each burrow. Most active in the first half of the night. Diet consists of grains and legumes, and they store these seeds in caches. Hibernate overwinter, emerging in February-March. Reproduction peaks in March and April, and again in autumn. May breed between 2-5 times each year, producing large litters (range 1-10; average 6-7).

Systems
  • Terrestrial
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Life History and Behavior

Life Expectancy

Lifespan, longevity, and ageing

Maximum longevity: 5.3 years (captivity) Observations: The *Cricetulus barabensis griseus* subspecies is widely used in biomedical research. After females deliver their third litter, they exhibit a progressive decline in litter size. They stop reproducing at about 16 months of age. Progesterone injections can induce pregnancies in aged females, though infant mortality is higher and the growth of the young is retarded (Parkening 1982). Some authors consider the *griseus* subspecies as a separate species.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Cricetulus barabensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 23
Species With Barcodes: 1

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Batsaikhan, N., Tinnin, D., Shar, S., Avirmed, D. & Usukhjargal, D.

Reviewer/s
Amori, G. (Small Nonvolant Mammal Red List Authority) & Tsytsulina, K. (Global Mammal Assessment Team)

Justification
This species has a large population size and a wide distribution. No decline in population size has been detected, and there are no known widespread major threats.

History
  • 1996
    Lower Risk/least concern
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Population

Population
No data are available at present.

Population Trend
Unknown
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Threats

Threats

Major Threats
Habitat degradation may be resulting through grazing by increasing numbers of livestock. Habitat loss through human-caused and natural wildfires also constitutes a threat. Neither of these are considered major threats to the species at present.
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Management

Conservation Actions

Conservation Actions
Approximately 9% of the species’ range in Mongolia occurs within protected areas. In China and Russia listed as Least Concern.
Conservation measures required. Further research is recommended.
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Wikipedia

Chinese striped hamster

{{Taxobox | name = Chinese Striped Hamster | status = LC | status_system = IUCN3.1 | status_ref = [1] | regnum = [[Animal]beef]iaChicken | phylum = Chordata | classis = Mammalia | ordo = Rodentia | familia = Cricetidae | genus = Cricetulus | species = C. barabensis | binomial = Cricetulus barabensis | binomial_authority = (Pallas, 1773) }}

The Chinese striped hamster (Cricetulus barabensis), also known as the striped dwarf hamster, is a species of hamster. It is distributed across Northern Asia, from southern Siberia through Mongolia and northeastern China to northern North Korea. An adult Chinese striped hamster weighs 16.7-31.0g, and has a body length of 74.2-103.6 mm with a tail of 21-36 mm. It is smaller and has a much shorter tail than the greater long-tailed hamster, Tscherskia triton, which inhabits much of the same range.It needs a huge cage for the dawarfy miget

Contents

Latin nomenclature

There is quite some confusion over the Latin name of the Chinese striped hamster and the closely related Chinese hamster. Some people consider the Chinese hamster (Cricetulus griseus) and the Chinese striped hamster (Cricetulus barabensis) different species [1], whereas others classify them as identical [2], the Chinese striped hamster as a subspecies of the Chinese hamster (in which case the Latin name of the Chinese striped hamster would be Cricetulus griseus barabensis) [3] or the other way round (in which case the Latin name of the Chinese hamster would be Cricetulus barabensis griseus) [4].

References

  1. ^ Batsaikhan, N., Tinnin, D., Shar, S., Avirmed, D. & Usukhjargal, D. (2008). Cricetulus barabensis. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 12 Jule 2009. Database entry includes a brief justification of why this species is of least concern.
  • Won Byeong-o (원병오) (2004). 한국의 포유동물 (Hangugui poyudongmul, Mammals of Korea). Seoul: Dongbang Media. ISBN 89-8457-310-8. 

See also

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Chinese hamster

The Chinese hamster (Cricetulus griseus), is a species of hamster originating from the deserts of northern China and Mongolia.

Contents

Description

These animals grow to between 82 and 127 mm in body length (tail length 20–33 mm) and weigh 1.7 grams at birth, then as they get older can weigh 30-45 grams. They live two to three years on average. A Chinese hamster's body proportions, compared with those of other hamsters, appear "long and thin" and they have (for a hamster) a relatively long tail. Males have a relatively large scrotum, therefore females were generally kept as pets and males used solely for breeding and research purposes, until scientists started using other rodents, albino mice and rats. Chinese hamsters are not related to the social "dwarf" hamsters. The term "dwarf" is often used to refer solely to animals in the genus Phodopus, (the two types of Russian dwarf hamsters and Roborovski dwarf hamsters).

The wild colour is brown with a black stripe down the spine, black and grey ticks and a whitish belly. This coloration, combined with their lithe build and longer tail, makes them look "mousy" to some eyes and, in fact, they are members of the group called ratlike hamsters. Besides the wild colour, a well-known variation is the white-spotted Chinese hamster, which often is grayish white all over, with only a dark stripe on its back.

They can have quite vicious temperaments but are easily handled; one of their endearing traits is that of clinging to a finger with all four paws, rather like a harvest mouse on a corn stalk. Chinese hamsters can be quite nervous as youngsters but, once they are tame, can display an endearing calmness and gentleness of character.

In the past, Chinese hamsters were commonly used laboratory animals, until they were replaced by the common mouse and rat, which are easier to keep and breed; however, quite a few biotech drugs are still being produced by putting the gene for the protein into Chinese hamster ovary cells (CHO cells), which then produce the protein.

Of note, some United States states such as California and New Jersey regard the Chinese hamster as a pest, and as a result require a special permit to own, breed or sell.[1]

Colour mutations

There are only three known colour mutations found in Chinese hamsters, Normal/Wild type, dominant spot and Black Eyed White. Normal and Dominant spot are readily available in the pet trade throughout the United Kingdom (UK) whereas the Black Eyed Whites is extremely rare and there are just a handful owned by a couple of hobbyist breeders in the UK.

Latin name

There is quite some confusion over the Latin name of the Chinese hamster and the closely related Chinese striped hamster. Some people consider the Chinese hamster (Cricetulus griseus) and the Chinese striped hamster (Cricetulus barabensis) different species,[2] whereas others classify them as identical,[3] the Chinese striped hamster as a subspecies of the Chinese hamster (in which case the Latin name of the Chinese striped hamster would be Cricetulus griseus barabensis)[4] or the other way round (in which case the Latin name of the Chinese hamster would be Cricetulus barabensis griseus).[5]

References

  1. ^ Lianne McLeod, "Chinese Hamsters," About.com.
  2. ^ "Cricetulus," The NCBI taxonomy database.
  3. ^ European Molecular Biology network. "SRS db query re 'Chinese hamster'". Columbia University. http://walnut.bioc.columbia.edu/srs7bin/cgi-bin/wgetz?-id+4mKAd1Sl9c0+%5Btaxonomy-ID:10029%5D+-e. Retrieved 2009-08-16. 
  4. ^ Anne, "Taxonomy of common rodent and rodent-like pets," Rat Behavior and Biology.
  5. ^ Russell Tofts, "The Chinese Cricetulus barabensis)".

See also

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