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Home -> Kingdom Animalia -> Phylum Chordata -> Subphylum Vertebrata -> Class Mammalia -> Order Artiodactyla -> Family Bovidae -> Subfamily Caprinae -> Species Ammotragus lervia

Ammotragus lervia
aoudad



2009/01/04 13:07:37.634 US/Eastern

By Matthew Steinway

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Subfamily: Caprinae
Genus: Ammotragus
Species: Ammotragus lervia

Geographic Range

Barbary sheep, also called auodads, originated in the hills of the Sahara and have inhabited all the major mountains of North Africa. In the late 1800s, Barbary sheep were introduced into Europe, including Germany and Italy. Around 1900, the first Barbary sheep were transferred to the United States to be placed in zoos. Surplus zoo stock was sold to private parties who eventually released some to the wild in New Mexico in 1950 and in Texas in 1957. This has allowed a wild population to develop in the southwestern United States (Gray & Simpson, 1980).

Biogeographic Regions:
nearctic (introduced ); palearctic (introduced ); ethiopian (native ).

Habitat

Ammotragus lervia is endemic to the mountains of Northern Africa. It has also survived in the mountains and canyons of the dry southwestern United States. Barbary sheep live in the desert mountains from sea level up to the edge of the snows.

Barbary sheep are also well adapted to a dry climate. They are able to survive long periods of time without fresh water intake by using metabolic water (Gray & Simpson, 1980; The Mammals of Texas - Online Edition, 1994; Schaller, 1977).

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

Physical Description

Mass
65 to 145 kg; avg. 105 kg
(143 to 319 lbs; avg. 231 lbs)


Ammotragus lervia is a relatively large sheep. The main pelage of the Barbary sheep is brown; however, the chin, throat, chest, and insides of the front limbs are covered with long, white hair. This white hair is called the ventral mane and appears as if the sheep had a beard. Sexual dimorphism is evident. Males can be up to 145 kg, while females are much smaller, the largest are up to 65 kg. Both males and females have horns that curve outward, backward, and point inward toward the neck. Females' horns are smaller, but have the same shape (Gray & Simpson, 1980; The Mammals of Texas - Online Edition, 1994). ("The Mammals of Texas - Online Edition", 1994; Gray and Simpson, 20 November 1980)

Some key physical features:
endothermic ; homoiothermic; bilateral symmetry .

Reproduction

Breeding interval
Breeding occurs once yearly.

Breeding season
Breeding occurs from September to November.

Number of offspring
1 to 2; avg. 1.01

Gestation period
5.17 to 5.50 months; avg. 5.33 months

Birth Mass
4500 g (average)
(158.4 oz)
[External Source: AnAge]


Time to weaning
4 months (low); avg. 4 months

Age at sexual or reproductive maturity (female)
19 months (average)

During estrus, females lick the sides of the prospective mate. The animals may touch muzzles. The male mounts the female and achieves copulation. Males defend groups of females from other males. ("The Mammals of Texas - Online Edition", 1994; Gray and Simpson, 20 November 1980)

Mating systems:
polygynous .

Breeding usually occurs from September through November, but the timing can vary. Gestation lasts about 160 days, so most lambs are born between March and May. However, births have been seen as late as November. Most births produce a single offspring, but twins are born one out of every six or seven births. ("The Mammals of Texas - Online Edition", 1994; Gray and Simpson, 20 November 1980)

The timing of sexual maturity varies among males. Sperm were found in one male at eleven months; however, this is probably not the norm. Females are considered sexually mature at 19 months; however, females as young as 8 months of age have produced offspring. ("The Mammals of Texas - Online Edition", 1994; Gray and Simpson, 20 November 1980)

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

Behavior

A dominance hierarchy has been observed in zoo populations of Barbary sheep. The social hierarchy is "one of linear descent through males, females, and juveniles." Males are the dominant sex, mainly because of the tremendous size difference. In groups, however, a dominant female always leaders. Dominance among juveniles is determined by the strength of the pair bond with their mothers. As the bond is broken, juveniles gain a sense of dominance among their peers. (Gray and Simpson, 20 November 1980; Schaller, 1977)

Barbary sheep have a very distinct threat posture used in intraspecific conflicts. They direct their horns toward the animal with which they are in conflict. Aggressive behavior is also shown by two other acts. One is the head-on charge, when two males charge into each other making contact with their horns. The other type of aggressive behavior is more similar to wrestling. The males butt their heads or hook their horns and then twist and make gouging movements. Females have been seen to fight, but they rarely perform the head-on charge. Unlike many of their relatives, Barbary sheep do not kick (Gray & Simpson, 1980; Schaller, 1977). (Gray and Simpson, 20 November 1980; Schaller, 1977)

Key behaviors:
terricolous; diurnal ; motile ; nomadic ; territorial ; social ; dominance hierarchies .

Food Habits

Barbary sheep are herbivorous, feeding on a variety of vegetation such as grass, forbs, and shrubs. Seasonal variation plays a role in determining their diet. In the winter, grass makes up the majority of food intake, while shrubs are the more common food the rest of the year (The Mammals of Texas - Online Edition, 1994). ("The Mammals of Texas - Online Edition", 1994)

Primary Diet:
herbivore (folivore ).

Plant Foods:
leaves.

Economic Importance for Humans: Negative

It is currently unknown as to whether the Barbary sheep will become a pest like many other introduced species. It has been suggested that Barbary sheep would compete directly with mule deer for food. They might also affect the attempt at reintroduction of bighorn sheep. These two species may not survive in the same environment because of direct competition for food and other resources. Barbary sheep have been found feeding on winter wheat crops in Texas (Mammals of Texas - Online Edition, 1994). ("The Mammals of Texas - Online Edition", 1994)

Economic Importance for Humans: Positive

In the United States, Barbary sheep are commercially bred to be used for sport hunting. Nomads of the Sahara depend on Barbary sheep for meat, hide, hair, sinews, and horns (Gray & Simpson, 1980). (Gray and Simpson, 20 November 1980)

Ways that people benefit from these animals:
food ; body parts are source of valuable material.

Conservation Status

IUCN Red List: [link]:
Vulnerable.

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

CITES: [link]:
Appendix II.

Commercially grown and wild populations of Barbary sheep are legally hunted in New Mexico and Texas (Gray & Simpson, 1980). (Gray and Simpson, 20 November 1980)

Other Comments

A viable female offspring was produced when a female domestic goat was mated with a male Barbary sheep. This was confirmed by a backcross with a male Barbary sheep (Gray & Simpson, 1980; The Mammals of Texas - Online Edition, 1994).

Contributors

Matthew Steinway (author), University of Michigan.
Phil Myers (editor), Museum of Zoology, University of Michigan.

References

1994. "The Mammals of Texas - Online Edition" (On-line). Accessed November 21, 1999 at http://www.nsrl.ttu.edu/tmot1/ammolerv.htm.

Gray, G., C. Simpson. 20 November 1980. Ammotragus lervia. Mammalian Species, 144: 1-7.

Schaller, G. 1977. Mountain Monarchs. Chicago, IL: The University of Chicago Press.

2009/01/04 13:07:38.794 US/Eastern

To cite this page: Steinway, M. 2000. "Ammotragus lervia" (On-line), Animal Diversity Web. Accessed January 07, 2009 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Ammotragus_lervia.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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