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Mongolian jird : ウィキペディア英語版
Mongolian gerbil

''Meriones unguiculatus'', the Mongolian jird or Mongolian gerbil is a rodent belonging to subfamily Gerbillinae. It is the most widely known species of the gerbil subfamily, and is the usual gerbil species to be kept as a pet or experimental animal, when it is known as the domesticated gerbil. Like the Syrian or golden hamster, it was first brought to the United States in 1954 by Dr. Victor Schwentker for use in research. Forty-four pairs were caught in Mongolia and brought to England. They were described as "squirrel colors... with long furry tails."〔Schwentker, V. "The Gerbil. A new laboratory animal." ''Ill Vet'' 6: 5–9, 1963.〕 They are somewhat larger than mice, with a body about 12 cm long (and a tail of similar length), with body mass averaging 50-55 grams in females and 60 grams in males.
The Mongolian gerbil is classed as a "prohibited new organism" under New Zealand's Hazardous Substances and New Organisms Act 1996, preventing it from being imported into the country.
==Origin==
''Meriones unguiculatus'' evolved on the semideserts and steppes of Mongolia. There, they developed long legs for jumping and running from predators, teeth to deal with hard seeds and plant matter, and water conservation techniques that allow them to survive in the arid climate, such as the ability to use dry food or stores of fat to generate metabolic water. Mongolian gerbils do not have many natural enemies due to the harsh climate. Most predators are birds of prey or snakes. Mongolian gerbils are diurnal, but return to their burrows for the coldest and hottest parts of the day.

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「Mongolian gerbil」の詳細全文を読む



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