Tuesday 18 June
Greater Egyptian gerbil (Gerbillus pyramidum)
Greater Egyptian gerbil fact file
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Greater Egyptian gerbil description
The largest gerbil in Egypt (3), the greater Egyptian gerbil has orange-brown to tawny-grey fur on its upperparts (4), often with a darker stripe running down the spine and a white patch on the rump (2). In common with most other gerbils, the greater Egyptian gerbil has a creamy white belly (2), and large ears and claws (5). The long tail is pale brown on top and white underneath, with a black, bushy tuft at the end (2). The long hind feet measure roughly a quarter of the body length (5) and the soles of the feet are hairy (2).Top
Greater Egyptian gerbil biology
Typically solitary, due to limited food availability (7), the greater Egyptian gerbil is nocturnal, spending the daytime in a burrow (8). The burrow may have one to five entrances (2), which can be blocked with sand once the gerbil is inside (8).
Like many other gerbil species, the greater Egyptian gerbil forages at dusk and during the night for seeds (its preferred food) and other plant parts (2) (6). The greater Egyptian gerbil is known to store food reserves to cope with periods of food scarcity in its desert habitat; this often includes storing camel dung, which the gerbil picks through to find undigested seeds (2). It rarely ventures into open habitat because it is hunted by owls, but may also avoid shrubs due to the presence of snakes (9).
This species breeds between late winter and early spring, when increased rainfall boosts the amount of food available (10). The greater Egyptian gerbil gives birth to an average of four young at a time, after a gestation period of 25 days (4). The young, which are born naked and helpless with their eyes closed (5), are weaned after 25 to 30 days (8).Top
Greater Egyptian gerbil rangeTop
Greater Egyptian gerbil habitat
The greater Egyptian gerbil occurs in a wide range of sandy desert habitats, showing a preference for unstable sand dunes with little vegetation cover (6).Top
Greater Egyptian gerbil status
Classified as Least Concern (LC) on the IUCN Red List (1).Top
Greater Egyptian gerbil threats
The greater Egyptian gerbil is currently not considered to be at risk of extinction, as it has a wide distribution, presumed large population, and is unlikely to be declining rapidly as there are no known major threats to the species (1). However, Gerbillus species tend to live in harsh environments, in habitat that is easily disturbed by human activity, which could pose a future threat to the greater Egyptian gerbil (5). It is possible that the growth of agricultural activities in its range, such as in the Nile Valley, may have negative impacts on the species (1).Top
Greater Egyptian gerbil conservation
The greater Egyptian gerbil is not known to be present in any protected areas and is not currently the subject of any specific conservation efforts (1).Top
Checked (24/08/10) by Dr Francis Gilbert, Associate Professor, University of Nottingham.
- The state of being pregnant; the period from conception to birth.
- Active at night.
IUCN Red List (April, 2010)
- Aulagnier, S., Haffner, P., Mitchell-Jones, A.J., Moutou, F. and Zima, J. (2009) Mammals of Europe, North Africa and the Middle East. A&C Black Publishers Limited, London.
- Hoath, R. (2009) A Field Guide to the Mammals of Egypt. The American University in Cairo Press, Cairo.
- Qumsiyeh, M.B. (1996) Mammals of the Holy Land. Texas Tech University Press, Texas.
- Nowak, R.M. (1999) Walker’s Mammals of the World. The Johns Hopkins University Press, Baltimore, Maryland.
- Abramsky, Z., Rosenzweig, M.L. and Pinshow, B. (1991) The shape of a gerbil isocline measured using principles of optimal habitat selection. Ecology, 72(1): 329-340.
- MacDonald, D.W. (2001) The New Encyclopedia of Mammals. Oxford University Press, Oxford.
Gerbil Information Page (April, 2010)
- Kotler, B.P., Blaustein, L. and Brown, J.S. (1992) Predator facilitation: the combined effect of snakes and owls on the foraging behaviour of gerbils. Annales Zoologici Fennici, 29: 199-206
- Soliman, S. and Mohallal, E.M. (2009) Patterns of reproduction in two sympatric gerbil species in arid Egypt. Integrative Zoology, 4: 248-253.
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