Relief of a porcupine in an Egyptian desert, detail of a wall fragment from the grave of Pehenuikai at Saqqara, Egypt, Old Kingdom, 5th Dynasty, c. 2500 BCE. Neues Museum, Berlin
The Old World porcupines, or Hystricidae, are large terrestrial rodents, distinguished by the spiny covering from which they take their name. They range over the south of Europe and the Levant,[1] most of Africa, India, and Southeast Asia as far east as Flores. Although both the Old World and New World porcupine families belong to the infraorder Hystricognathi of the vast order Rodentia, they are quite different and are not particularly closely related.
Old World porcupines are stout, heavily built animals, with blunt, rounded heads, fleshy, mobile snouts, and coats of thick cylindrical or flattened spines, which form the whole covering of their bodies, and are not intermingled with ordinary hairs. The habits of most species are strictly terrestrial. They vary in size from the relatively small long–tailed porcupine with body lengths of 27.9 to 48cm (11.0 to 18.9in), and a weight of 1.5 to 2.3kg (3.3 to 5.1lb),[2] to the much larger crested porcupines, which are 60 to 83cm (24 to 33in) long, discounting the tail, and weigh from 13 to 27kg (29 to 60lb).[3]
The various species are typically herbivorous, eating fruit, roots, and bulbs. Some species also gnaw on dry bones, perhaps as a source of calcium. Like other rodents, they have powerful gnawing incisors, and no canine teeth. Their dental formula is 1.0.1.31.0.1.3.[4] The prominent diastema allows the lips to be drawn inwards while gnawing. Similar to other hystricomorphs, their chewing muscles are unique. Through an arm of the masseter muscles, passing through the infraorbital foramen, chewing movements are very efficient.[5][6]
One or two (or, rarely, three) young are born after a gestation period between 90 and 112 days, depending on the species. Females typically give birth only once a year, in a grass-lined underground chamber within a burrow system. The young are born more or less fully developed, and the spines, which are initially soft, harden within a few hours of birth. Although they begin to take solid food within two weeks, they are not fully weaned until 13 to 19 weeks after birth. The young remain with the colony until they reach sexual maturity at around two years of age, and share the burrow system with their parents and siblings from other litters. Males, in particular, help defend the colony from intruders, although both sexes are aggressive towards unrelated porcupines.[3]
These rodents are also characterized by the imperfectly rooted cheek-teeth, imperfect clavicles or collar-bones, cleft upper lip, rudimentary first front-toes, smooth soles, six teats arranged on the side of the body, and many cranial characters.
Species
African brush-tailed porcupine (Atherurus africanus) sold for meat in Cameroon
Of the three genera, Hystrix is characterized by an inflated skull, in which the nasal cavity is often considerably larger than the brain case, and a short tail, tipped with numerous slender-stalked open quills, which make a rattling noise whenever the animal moves. When threatened, most porcupines will wag their tails, making a louder rattling noise to scare off predators. The African brush-tailed porcupine (A. africanus) will simultaneously raise sharp quills, 40cm (16 inches) in length, on its back and sides.[7]
The crested porcupine (Hystrix cristata), a typical representative of the Old World porcupines, occurs throughout the south of Europe and North and West Africa. It is replaced in southern and central Africa by the Cape porcupine, H. africaeaustralis, and in India by the Malayan porcupine (H. brachyura) and Indian (crested) porcupine (H. indica). The latter also lives throughout the Middle East.
Besides these large-crested species, several smaller species without crests occur in northeast India, and the Malay region from Nepal to Borneo.
The genus Atherurus includes the brush-tailed porcupines which are much smaller animals, with long tails tipped with bundles of flattened spines. One species is found in the Malay region and one in Central and West Africa. The latter species, the African brush-tailed porcupine, is often hunted for its meat.[8]
Trichys, the last genus, contains one species, the long-tailed porcupine (T. fasciculata) of Borneo. This species is externally very similar to Atherurus, but differs from the members of that genus in many cranial characteristics.
Fossil species are also known from Africa and Eurasia, with one of the oldest being Sivacanthion from the Miocene of present-day Pakistan. However, it was probably not a direct ancestor of modern porcupines.[9]
Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation. The term covers two families of animals: the Old World porcupines of the family Hystricidae, and the New World porcupines of the family Erethizontidae. Both families belong to the infraorder Hystricognathi within the profoundly diverse order Rodentia and display superficially similar coats of rigid or semi-rigid quills, which are modified hairs composed of keratin. Despite this, the two groups are distinct from one another and are not closely related to each other within the Hystricognathi. The largest species of porcupine is the third-largest living rodent in the world, after the capybara and beaver.
The Cape porcupine, Cape crested porcupine or South African porcupine, is a species of Old World porcupine native to central and southern Africa.
The Indian crested porcupine is a hystricomorph rodent species native to southern Asia and the Middle East. It is listed as Least Concern on the IUCN Red List. It belongs to the Old World porcupine family, Hystricidae.
The African brush-tailed porcupine is a species of rat-like Old World porcupine, indigenous to a broad belt of Africa ranging from Guinea on the west coast to Kenya on the east. This is a common species with a very wide range, and despite it being used extensively for bushmeat, the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
Hystrix is a genus of porcupines containing most of the Old World porcupines. Fossils belonging to the genus date back to the late Miocene of Africa.
The brush-tailed porcupines are a genus, Atherurus, of Old World porcupines found in Asia and Africa.
The crested porcupine, also known as the African crested porcupine, is a species of rodent in the family Hystricidae native to Italy, North Africa and sub-Saharan Africa.
The Asiatic brush-tailed porcupine is a species of rodent in the family Hystricidae. It is found in China, Bhutan, India, Laos, Malaysia, Myanmar, Thailand, and Vietnam.
The Malayan porcupine or Himalayan porcupine is a species of rodent in the family Hystricidae. Three subspecies are extant in South and Southeast Asia.
The Sunda porcupine also known as Javan porcupine is a species of rodent in the family Hystricidae. It is endemic to Indonesia. Due to the popularity of the hunting and consumption of the Sunda porcupine as an aphrodisiac, the Ministry of Environment and Forestry in Indonesia has listed this species as a protected animal as of June 2018.
The Philippine porcupine or Palawan porcupine is a species of rodent in the family Hystricidae endemic to the island of Palawan in the Philippines. It is known locally as durian or landak.
The long-tailed porcupine is a species of rodent in the family Hystricidae. It is monotypic within the genus Trichys, and is found in Brunei, Indonesia, and Malaysia.
↑ McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN0-231-11013-8.
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