Saturday 25 May
European ground squirrel (Spermophilus citellus)
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European ground squirrel fact file
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European ground squirrel description
The European ground squirrel belongs to a genus commonly referred to as the sousliks, with representatives spread throughout the northern hemisphere from California to China (3). Ground squirrels tend to have stout, low-slung bodies, resting upon short legs, and a well-furred tail measuring about a third the length of the body (2) (3) (4). The European ground squirrel generally has short yellowish fur but the back is tinged distinctly grey with dense cream spots (2) (3). All species within the genus have sizeable internal cheek pouches for carrying food (3).
- Also known as
- European souslik, European squirrel.
- Souslik D'Europe.
- Ardilla Terrestre. Top
- The Rufford Small Grants Foundation:
- A species or taxonomic group that is only found in one particular country or geographic area.
- A category used in taxonomy, which is below ‘family’ and above ‘species’. A genus tends to contain species that have characteristics in common. The genus forms the first part of a ‘binomial’ Latin species name; the second part is the specific name.
- A winter survival strategy characteristic of some mammals in which an animal’s metabolic rate slows down and a state of deep sleep is attained. Whilst hibernating, animals survive on stored reserves of fat that they have accumulated in summer.
- Animals with no backbone.
- Semi-arid grassland with few trees.
- IUCN Red List (April, 2008)
- Kleiman, D.G., Geist, V. and McDade, M.C. (2003) Grzimek's Animal Life Encyclopedia. Vol 15, Mammals IV. Gale Group, Farmington Hills, Michigan.
- Nowak, R.M. (1999) Walker's Mammals of the World. Johns Hopkins University Press, Baltimore, Maryland.
- World Association of Zoos and Aquariums (November, 2008)
- Hulová, S. and Sedláček, F. (2008) Population genetic structure of the European ground squirrel in the Czech Republic. Conservation Genetics, 9: 615 - 625.
- Koshev, Y.S. (2005) Conservation of the European souslik - a step towards the prosperity of its native predators and preferred habitats. The Whitley Laing Foundation for International Nature Conservation/Rufford Small Grant programme, UK. Available at:
- EU Habitats Directive (November, 2008)
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European ground squirrel biology
Although the European ground squirrel lives in burrows in loosely structured populations, it is not an exceptionally social or territorial species (2). In common with all ground-dwelling squirrels, it is mostly active during the hours of sunlight, devoting most of its attention to foraging for food. Roots, seeds, shoots and flowers comprise the bulk of this species’ diet, but occasionally small invertebrates will also be taken (1) (4). However, as an important part of the food chain itself, it is commonly preyed upon by larger predators such as polecats and birds of prey (5) (6). During the summer months, there is a rise in foraging activity as each ground squirrel attempts to accumulate as much stored fat as possible before the onset of hibernation (2). Unlike many other ground squirrels, it does not stock-pile food but must rely on doubling its body mass to see it through the long winter (2) (3). Entering hibernation near the beginning of September, European ground squirrels do not appear from the underground burrows again until late March. Soon after emerging there is a scramble amongst the males to gain access to the reproductively active females. This period of breeding lasts three to four weeks, with each female mating with only one male. Following 25 days of development in the womb, the females give birth to a litter of 4 to 11 young which receive milk for around 30 days before being weaned. The young reach maturity after the following hibernation, but not all will breed in their first year (3).Top
European ground squirrel range
The European ground squirrel is endemic to central and eastern Europe, from the Czech Republic in the northwest to Turkey in the southeast (1). Historically, its western boundary extended into southeast Germany (1) (2).Top
European ground squirrel habitat
An inhabitant of open landscape without dense vegetation cover, the European ground squirrel is normally found in short-grass habitats on light, well-drained soils (1) (3). This includes a range of natural and artificial habitats such as steppe grassland, pasture, vineyards, sports fields and golf courses (1).Top
European ground squirrel status
Classified as Vulnerable (VU) on the IUCN Red List (1).Top
European ground squirrel threats
The conversion of steppe grassland and pasture into cultivated farmland and forestry is chiefly responsible for a serious decline in the population of European ground squirrels (1) (3). As a consequence of the rapid loss of suitable habitat, the population is becoming severely fragmented, whilst its range is retracting, particularly in the west (1). Furthermore, as an integral part of the food chain, a decrease in the number of European ground squirrels is probably responsible for a decline in the populations of many other vulnerable species (5).Top
European ground squirrel conservation
The European ground squirrel is listed on Appendix II of the Bern Convention and Annexes II and IV of the EU Habitats and Species Directive (1). Under this legislation, it is the responsibility of the countries within the species’ range to ensure its conservation (7). In 2005, this species was reintroduced successfully to Poland and a project has recently been initiated to reintroduce it into Germany. One of the main priorities of conservation efforts is to conduct further studies into the ecology, threats and population biology of the European ground squirrel. This research will provide crucial data in determining appropriate future conservation measures (1).Top
Find out more
For more information on the conservation of European ground squirrels see:
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