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Home -> Kingdom Animalia -> Phylum Chordata -> Subphylum Vertebrata -> Class Mammalia -> Order Soricomorpha -> Family Soricidae -> Subfamily Soricinae -> Species Sorex araneus

Sorex araneus
Eurasian shrew



2009/11/08 05:11:23.093 US/Eastern

By Meghan Taylor

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Order: Soricomorpha
Family: Soricidae
Subfamily: Soricinae
Genus: Sorex
Species: Sorex araneus

Geographic Range

Sorex araneus is found in Europe, including Great Britain and the Pyrenees. The extent of its range to the east is Lake Baikal, except in the dry steppes and desert zone. It is not found in Iberia, or most of France.(Mitchell-Jones 1999, Stone 1995)

Biogeographic Regions:
palearctic (native ).

Habitat

Sorex araneus lives in variable habitats. These include woodlands, grassland, dunes, scree, heath, and hedgerows. It can live as far as the limits of the summer snow line.(Parker 1990)

These animals are found in the following types of habitat:
temperate .

Terrestrial Biomes:
forest ; mountains .

Physical Description

Mass
5 to 14 g; avg. 9.50 g
(0.18 to 0.49 oz; avg. 0.33 oz)


Length
48 to 80 mm; avg. 64 mm
(1.89 to 3.15 in; avg. 2.52 in)


Basal Metabolic Rate


Sorex araneus has a tricolored coat. The ventral side is grayish, and the dorsal side varies in color from black to reddish brown. Its flanks are nut brown. Its tail is brown on the dorsal side, and gray ventrally. It has small eyes and it ears are hidden in fur. It has red-tipped teeth.(Mitchell-Jones 1990, Stone 1995)

Some key physical features:
endothermic ; bilateral symmetry .

Reproduction

Gestation period
19 to 21 days; avg. 20 days

Time to weaning
26 to 30 days; avg. 28 days

Age at sexual or reproductive maturity (female)
9 to 10 months; avg. 9.50 months

Age at sexual or reproductive maturity (male)
9 to 10 months; avg. 9.50 months

Gestation takes place for 19-21 days. Young are born weighing between 0.5-0.6 grams. The young are weaned after 26-30 days, and reach sexual maturity at 9 or 10 months.(Parker 1990, Mitchell-Jones 1999)

Key reproductive features:
gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization (internal ); viviparous .

Lifespan/Longevity

Extreme lifespan (wild)
1 years (high)
[External Source: AnAge]


Average lifespan (captivity)
2 years

Sorex araneus can live for about 2 years. (Mitchell-Jones 1990)

Behavior

Juveniles disperse shortly after weaning, and are especially vulnerable to predation during dispersal. Both sexes establish home ranges as juveniles, and are territorial. The home ranges vary in size from 370-630 m^(2). Breeding is delayed until the second year. Individuals are solitary and aggressive, and population densities range from 42-69 individuals per hectare. They are active during night and day. (Stone 1995)

Key behaviors:
nocturnal ; motile ; solitary ; territorial .

Food Habits

It is an opportunistic feeder that preys upon many insects, woodlice, spiders, and earthworms. (Cove et al. 2000)

Primary Diet:
carnivore (insectivore , eats non-insect arthropods).

Predation

Known predators

There are a number of predators of Sorex araneus, as listed below. (Kristofik 1999, Parker 1990)

Ecosystem Roles

Sorex araneus makes burrows below ground, and also uses the burrows of mice, voles, and moles. (Stone 1995)

Economic Importance for Humans: Negative

Sorex araneus eats helpful invertebrates such as earthworms and spiders.

Economic Importance for Humans: Positive

There may be some pest invertebrates in the diet of Sorex araneus.

Ways that people benefit from these animals:
controls pest population.

Conservation Status

IUCN Red List: [link]:
Lower Risk - Least Concern.

US Federal List: [link]:
No special status.

CITES: [link]:
No special status.

The main threat to Sorex araneus is by habitat destruction through road construction and development in Europe(Stone 1995).

The common shrew in England is protected by the Wildlife and Countryside Act (1981) and cannot trapped without a license (The Mammal Society 2001).

For More Information

Find Sorex araneus information at

Contributors

Meghan Taylor (author), University of Michigan.
Bret Weinstein (editor), University of Michigan.

References

January 1, 2001. "The Mammal Society" (On-line). Accessed November 25, 2001 at http://www.abdn.ac.uk/mammal/cshrew.htm.

Cove, R., D. Glue, S. Harris, C. Webbon. 2000. Changes in the food of British barn owls between 1974 and 1997. Mammal Review, 30(2): 107-129.

Kristofik, J. 1999. Small mammals in floodplain forests. Folia Zoologica, 48(3): 173-184.

Mitchell-Jones, A. 1999. The Atlas of European Mammals. San Diego, CA: Academic Press.

Parker, S. 1990. Grzimek's Encyclopedia of Mammals. New York, NY: McGraw Hill, Inc..

2009/11/08 05:11:24.357 US/Eastern

To cite this page: Taylor, M. 2002. "Sorex araneus" (On-line), Animal Diversity Web. Accessed November 09, 2009 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Sorex_araneus.html.

Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

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