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Home -> Kingdom Animalia -> Phylum Chordata -> Subphylum Vertebrata -> Class Mammalia -> Order Erinaceomorpha -> Family Erinaceidae -> Subfamily Erinaceinae -> Species Paraechinus aethiopicus

Paraechinus aethiopicus
desert hedgehog



2008/07/06 07:13:09.768 GMT-4

By Dustin Hall

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Order: Erinaceomorpha
Family: Erinaceidae
Subfamily: Erinaceinae
Genus: Paraechinus
Species: Paraechinus aethiopicus

Geographic Range

This species is found widely throughout much of northern Africa and the Arabian Peninsula. Its range extends all over the Sahara from Morocco to Egypt to Syria and Iraq.

Biogeographic Regions:
ethiopian (native ).

Habitat

Paraechinus aethiopicus is well adapted to arid, drought-like conditions. It lives in hot, dry deserts but can also be found in vegetated areas of an oasis or coast.

Terrestrial Biomes:
desert or dune .

Physical Description

Mass
400 to 700 g; avg. 550 g
(14.08 to 24.64 oz; avg. 19.36 oz)


Length
140 to 230 mm; avg. 185 mm
(5.51 to 9.06 in; avg. 7.28 in)


Paraechinus aethiopicus carries an armament of dorsal spines from the base of its head to its rear, leaving the top of its head bald. These spines are hollow and pale brown with dark tips. The color of the ventral side and feet is a variable combination of brown, black, white, solid brown or solid white. The muzzle and mask are black with lighter bands on the forehead. Paraechinus aethiopicus is larger than the other species of hedghog that shares its region, Hemiechinus auritus, but quite similar otherwise.

Some key physical features:
endothermic ; bilateral symmetry .

Reproduction

Breeding season
May to June

Number of offspring
2 to 7; avg. 4.50

Gestation period
30 to 40 days (average)

Time to weaning
40 days (average)

The reproductive pattern of this species is not well documented, but it is known that not all of the offspring of a litter survive to adolesence. Some die soon after birth, and it has been reported that females sometimes cannibalize their young, probably in times of food shortage.

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

Deaf and blind, a young P. aethiopicus is born fairly helpless. It is born with its spines for some protection; however, during the actual birth the spines remain under the skin, which no doubt makes labor easier on the mother. The young weigh about 8 or 9 grams at birth, and their eyes open in 23-29 days. After about 40 days they begin eating solid food (in addition to mother's milk).

Parental investment:
altricial ; female parental care .

Lifespan/Longevity

Average lifespan (captivity)
4.50 years
[External Source: Max Planck Institute for Demographic Research]


Typically, the lifespan of a hedgehog in the wild is 3-4 years. In captivity they have been known to live as long as 10 years. The lifespan of this particular species, however, has not been documented.

Behavior

During the daytime, members of this species rest near rocks and cliffs. This allows them protection while they sleep, hiding them from birds of prey. They sleep on their sides, so their spines give them little protection while at rest. They hunt at night. Insects and other prey congregate near coastline or inland vegetation around an oasis, which is why P. aethiopicus can often be found in these areas. During prolonged periods of cold weather, these hedgehogs hibernate, waking periodically to forage for food. These periods of hibernation may be necessary as a result of the poor insulation offered by their spines.

Key behaviors:
nocturnal ; motile ; solitary .

Food Habits

This species is mainly insectivorous, but it eats a variety of foods when they are available. It is not, however, thought to eat plant matter. One other interesting note is that P. aethiopicus, like other hedgehogs, has a high tolerance for snake and insect venoms, estimated to be 30 to 40 times that of a similar sized rodent. This protects them while hunting venomous or stinging prey.

Prey include: insects, small invertebrates, the eggs of ground-nesting birds, frogs, snakes and scorpions.

Primary Diet:
carnivore (insectivore ).

Animal Foods:
amphibians; reptiles; eggs; insects; terrestrial non-insect arthropods.

Predation

Known predators

The spines of this species, and other hedgehogs, are the main tool for escaping predators. It tucks its head into its ventral region and effectively rolls into a ball. This exposes only its spines to a potential predator, making it difficult to eat.

Ecosystem Roles

The role that this species plays in its desert ecosystem is not well studied.

Economic Importance for Humans: Negative

There are no adverse effects of P. aethiopicus on humans.

Economic Importance for Humans: Positive

Hedgehogs may help to control pest populations through their predation on insects and other invertebrates.

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.

By all accounts, this species is not endangered and is, in fact, quite common in some parts of its range.

Other Comments

The phylogeny of this species has been disputed. It is sometimes classified in the genus Hemiechinus and sometimes in the genus Paraechinus. Up to five subspecies have been recognized. Hedgehogs have become a fairly common pet in North America and Europe; however, the common pet hedgehog is actually a hybrid of two other African species, not Paraechinus aethiopicus.

Contributors

Dustin Hall (author), University of Michigan.
Bret Weinstein (editor), University of Michigan.

References

Bates, P. "Arabia's Hedgehogs: primitive but successful" (On-line). Accessed October 9, 2001 at http;//www.arabianwildlife.com/archive/vol2.1/hedge.htm.

DVM Hammet, D. "Caring For Pet Hedgehogs" (On-line). Accessed October 11, 2001 at http://www.appspring.com/ACVC/hedgehog.htm.

DVM Johnson-Delaney, C. "Common Disorders and Care of Pet Hedgehogs" (On-line). Accessed October 11, 2001 at http://netvet.wustl.edu/species/exotic/hedgehog.htm.

Nowak, R. "Walker's Mammals of the World" (On-line). Accessed October 9, 2001 at http://www.press.jhu.edu/books/walkers_mammals_of_the_world/insectivora/insectivora.erinaceidae.paraechinus.html.

Harrison, D. 1964. The Mammals of Arabia volume 1. London, England: Ernest Benn Limited.

Hayssen, V. 1993. Asdell's Patterns of Mammalian Reproduction. Ithaca, New York: Comstock Publishing Associates.

IUCN, 1995. "Eurasian Insectivores and Tree Shrews - Status Survey and Conservation Action Plan" (On-line). Accessed October 9, 2001 at http://members.vienna.at/shrew/itsesAP95-erinaceidae.html.

Kock, D., C. Ebenau. 1996. The Desert Hedgehog, Paraechinus aethiopicus (Ehrinberg, 1833), New to the Fauna of Syria. Pp. 189-191 in L. Giessen, K. Kiel, eds. Zeitschift Fur Saugetierkunde. Stuttgart, Germany: Gustav Fischer.

Nader, I., M. Al-Safadi. 1993. The Ethiopian Hedgehog Paraechinus aethiopicus (Ehrenberg, 1833) and Brandt's Hedgehog Paraechinus hypomelas (Brandt, 1836) (Mammalia: Insectivora: Erinacidae) from Northern Yemen. Pp. 397-400 in W. Prof. Dr. Buttiker, F. Dr. Krupp, eds. Fauna of Saudi Arabia. Riyadh, Saudi Arabia: National Commission for Wildlife Conservation and Development.

2008/07/06 07:13:12.422 GMT-4

To cite this page: Hall, D. 2002. "Paraechinus aethiopicus" (On-line), Animal Diversity Web. Accessed July 09, 2008 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Paraechinus_aethiopicus.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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