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Campbell's dwarf hamster (''Phodopus campbelli'') is a species of hamster in the genus ''Phodopus''. It was given its common name by Oldfield Thomas in honour of W.C. 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. In the wild, the breeding season for Campbell's dwarf hamster varies by location. For example, the breeding season begins towards the middle of April in Tuva and towards the end of April in Mongolia. However, in captivity, there is no fixed breeding season and they can breed frequently throughout the year. Females are usually sexually mature at two months of age and the gestation period is typically 20 days. Campbell's dwarf hamster is crepuscular, along with all species of ''Phodopus'' and is active throughout the year. Campbell's dwarf hamsters are omnivores, and so feed on both plant and insect material. Campbell's dwarf hamster inhabits burrows with four to six horizontal and vertical tunnels in the steppes and semi deserts of central Asia, the Altai mountains, autonomous areas of Tuva and the Hebei province in northeastern China. This hamster is listed as of Least Concern by the International Union for the Conservation of Nature (IUCN). It is native to China, Kazakhstan, Mongolia and Russian Federation. ==Taxonomy and naming== The binomial name of Campbell's dwarf hamster is ''Phodopus campbelli''. This species is the type species of ''Phodopus'', and is named after W. C. Campbell, who first described it on July 1, 1902, in Inner Mongolia. The exact location was given as "Shaborte" (a Mongolian word for a dry lake) and so the exact co-ordinates are not clear.〔〔〔 Thomas described the type specimen in 1905 as ''Cricetulus campbelli''.〔 Synonyms for this species are ''Phodopus crepidatus'' and ''Phodopus tuvinicus''.〔 Common names have been applied to Campbell's dwarf hamster, including the striped hairy-footed hamster, the Djungarian hamster,〔〔 the Siberian hamster, and Campbell's hamster. Campbell's dwarf hamster is commonly confused with the Djungarian hamster (''Phodopus sungorus'') due to some of the common names, such as the "Siberian hamster" also being used to describe the Djungarian hamster.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Campbell's dwarf hamster」の詳細全文を読む スポンサード リンク
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