is restricted to Africa. They are most common in southern Africa, specifically in Nambia, the Cape province of South Africa, and extreme southern Botswana. They can also be found from southeastern Sudan and northeastern Somalia to central Tanzania (Nowak 1997). See map in media section for illustration.
are found in a variety of habitats including open plains, arid lowlands, savannas, deserts, thornbush, and tropical forests. Most will take over old rodent burrows. The majority of Elephant shrews are forest dwellers that often live in burrows, ground depressions, rock crevices, termite mound crevices or under logs. Some elephant shrews construct nests on the forest floor, in which they sleep when not active. They also construct a network of paths to help them move around their territory. These trails are also used as escape routes from predators, such as snakes and small mammals (Smithers 1971).
Although the common name ofis 'elephant shrew', it is not a shrew nor is it related to elephants. It gets its name from its long mobile snout, which it can move around rather like an elephant’s trunk. It uses its snout to search for worms, ants, termites and other inverterbrates. Its legs are long and thin; its hindlimbs are longer than its forelimbs, allowing it to jump and hop. It has a long tail, and large eyes and ears. It also has long, soft fur; the upper parts are sandy brown, buffy gray or buffy orange and the underparts are white, or grayish (Corbet and Hanks 1968).
The pair does not spend much time together. Females are usually dominant to males. Each individual defends the mating teritory sex-specifically; males ward off males and females ward off females. Boundary encounters are characterized by drumming of one or both hind feet, ritualized gestures, and high speed chases (Rathbun 1995).
form monogamous pairs when they mate and share a territory of about 0.34 ha. The pair makes trails through this area and mate at established points they mark. These markings are made by scent-marking, including rubbing a sternal gland on the substrate and probably by urination and defecation (Koontz and Roeper 1983). Females may have several liters annually; recorded interbirth intervals range from 56 to 145 days. There is no seasonal time for reproduction- mating takes place year round (Koontz and Roeper 1983).
have a gestation period of about two months. The young are precocial, well developed at birth, covered with hair, and fairly large. . Their eyes are open at birth or soon thereafter and can walk almost immediately after they are born and thus, require minimal parental care. They are weaned by the time they are about 25 days old. At about 50 days they reach adult size, are sexually mature, and are driven from the parental territory.
There are different estimates of the life span of these animals. Animals living in the wild might reach an age of 1 to 1.5 years; those in captivity live about 3.5 years.
usually live singly or in pairs, although they have been seen to also live in small colonies (Nowak 1997). They are usually diurnal; active mainly during the
day, but can be nocturnal during hot weather, moonlit nights, and when threatened by diurnal predators.
A pair occupies a territory that averages 0.34 ha.
The diet consists mainly of termites and ants, but also includes shoots, berries and roots (Vaughan 2000). In captivity they accept various foods, including fruits and vegetables (Nowak 1997).
have a keen sense of smell that helps them to sense food and danger. When pursued, they hide in any available shelter. They also make a series of escape routes radiating out from their nests to feeding areas so that they can quickly escape if being pursued by a predator. Few predators actually raid their nest sites perhaps because the young mature quickly and leave the nest (Smithers 1971).
has a very limited role in the ecosystem. One reason for this is that it rarely ever creates new habitat due to the fact that it uses old, abondoned burrows and piles of leaves to build its nest.
The East African long-eared elephant shrew () carries a type of malaria that humans apparently cannot contract. Therefore, it has been used in malarial research and has contributed greatly to medical advancement in the curing and understanding of Malaria (Koontz and Roeper 1983).
These animals are not known to have a negative economic impact on humans.
According to the "Red List of Threatened Animals" of the IUCN (International Union for the Conservation of Nature) in 1996was classified as "vulnerable". The most important causes for decline of its populations are habitat loss and fragmentation by deforestation (Rathbun 1995).
Rania Awaad (author), University of Michigan-Ann Arbor, Bret Weinstein (editor), University of Michigan-Ann Arbor.
living in sub-Saharan Africa (south of 30 degrees north) and Madagascar.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
uses smells or other chemicals to communicate
in deserts low (less than 30 cm per year) and unpredictable rainfall results in landscapes dominated by plants and animals adapted to aridity. Vegetation is typically sparse, though spectacular blooms may occur following rain. Deserts can be cold or warm and daily temperates typically fluctuate. In dune areas vegetation is also sparse and conditions are dry. This is because sand does not hold water well so little is available to plants. In dunes near seas and oceans this is compounded by the influence of salt in the air and soil. Salt limits the ability of plants to take up water through their roots.
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
parental care is carried out by females
union of egg and spermatozoan
forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.
fertilization takes place within the female's body
parental care is carried out by males
Having one mate at a time.
having the capacity to move from one place to another.
the area in which the animal is naturally found, the region in which it is endemic.
active during the night
an animal that mainly eats all kinds of things, including plants and animals
rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.
scrub forests develop in areas that experience dry seasons.
reproduction that includes combining the genetic contribution of two individuals, a male and a female
uses touch to communicate
Living on the ground.
defends an area within the home range, occupied by a single animals or group of animals of the same species and held through overt defense, display, or advertisement
reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.
breeding takes place throughout the year
young are relatively well-developed when born
Corbet, G., J. Hanks. 1968. A revision of the elephant-shrews, family Macroscelididae. Natural History, 16: 1-111.
FitzGibbon, C. 1995. Comparitive ecology of two elephant shrew species in a Kenyan Costal forest. Mammal Review, 25: 19-30.
Koontz, F., N. Roeper. 1983. Elephantulus rufescens. Mammalian Species, 204: 5.
Nowak, R. 1997. "Elephant Shrews" (On-line). Accessed October 10, 2001 at http://www.press.jhu.edu/books/walkers_mammals_of_the_world/macroscelidea/macroscelidea.macroscelididae.html#genera.
Rathbun, G. 1995. Conservation issues and strategies for elephant shrews. Mammal Review, 25: 79-86.
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Simons, E., P. Holroyd, T. Bown. November 1991. Early tertiary elphant-shrews from Egypt and the origin of the Macroscelidea. Proc. National Academy of Science, 88: 9734-9737.
Smithers, R. 1971. The mammals of Botswana. Rhodesia: Trustees Natl. Museums and Monuments Rhodesia Mus.
Zoo, L. "Short-eared Elephant Shrew" (On-line). Accessed October 10, 2001 at http://zoo.interaccess.com/tour/factsheets/mammals/elephant_shrew.html.