Sand Rat
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| Sand Rat Fossil range: Late Miocene - Recent |
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Secure
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| Psammomys obesus |
Sand Rat (Psammomys obesus) also known as the Fat Sand Rat is a terrestrial mammal from the gerbil subfamily that is mostly found in North Africa and Middle East ranging from Mauritania to the Arabian Peninsula.
[edit] Habitat, behavior and food habits
This species usually lives in sandy deserts, but may also be found in rocky terrain or saline-marsh areas. It lives in burrows which are often located under the bushes in which the rats forage, such as salt bushes of the Chenopodiaceae family.
The Fat Sand Rat is diurnal, but its activity on the surface depends on the ambient temperature.
[edit] Medical significance
Sand Rats can easily acquire diabetes mellitus when they are fed a normal rodent diet of grains. Therefore they have been used as an animal model for studies on diabetes.
The presence of Sand Rats in North Africa and the Middle East is of healthcare importance, as this species can harbor the parasite agent which causes Leishmaniasis in humans.
These animals have been studied extensively for their remarkably efficient kidneys: they can produce very concentrated urine which enables them to survive extreme heat and lack of water in desert environments.
[edit] External links
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