Captive Meercat [Suricata suricatta]


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License: Creative Commons - Attribution
Author: Pedro Ribeiro Simões
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Lisbon Zoological garden, Sete Rios, Lisbon, Portugal ABOUT THE SURICATTA CONSERVATION STATUS Least Concern (IUCN 3.1) SCIENTIFIC CLASSIFICATION Kingdom:Animalia Phylum:Chordata Class:Mammalia Order:Carnivora Suborder:Feliformia Family:Herpestidae Genus:Suricata Desmarest, 1804 Species:S. suricatta Binomial name Suricata suricatta (Schreber, 1776) Meerkat Area.svg MEERKAT RANGE The meerkat (Suricata suricatta) or suricate is a small carnivoran in the mongoose family. It is the only member of the genus Suricata. Meerkats live in all parts of the Kalahari Desert in Botswana, in much of the Namib Desert in Namibia and southwestern Angola, and in South Africa. A group of meerkats is called a "mob", "gang" or "clan". A meerkat clan often contains about 20 meerkats, but some super-families have 50 or more members. In captivity, meerkats have an average life span of 12–14 years, and about half this in the wild. ETYMOLOGY "Meerkat" is a loanword from Afrikaans (pronounced [ˈmɪərkat]). The name has a Dutch origin, but by misidentification. In Dutch, meerkat means the guenon, a monkey of the genus Cercopithecus. The word meerkat is Dutch for "lake cat", but although the suricata is a feliform, it is not of the cat family; the word possibly started as a Dutch adaptation of a derivative of Sanskrit markaṭa = "ape", perhaps in Africa via an Indian sailor on board a Dutch East India Company ship. In early literature, suricates were referred as mierkat. In colloquial Afrikaans, mier means termite, and kat means cat. It has been speculated that the name comes from their frequent association with termite mounds or the termites they eat. TAXONOMY Three subspecies are currently recognized: Suricata suricatta suricatta NATIVE TO SOUTHERN NAMIBIA AND BOTSWANA, AND SOUTH AFRICA. Suricata suricatta ionaAngolan meerkat NATIVE TO SOUTHWESTERN ANGOLA. Suricata suricatta majoriaeDesert meerkat NATIVE TO THE NAMIB DESERT AND CENTRAL AND NORTHWESTERN NAMIBIA. DESCRIPTION Skull and dentition, as illustrated in Gervais' Histoire naturelle des mammifères Skull of a meerkat The meerkat is a small diurnal herpestid (mongoose) weighing on average about 0.5 to 2.5 kilograms (1.1 to 5.5 lb). Its long slender body and limbs give it a body length of 35 to 50 centimetres (14 to 20 in) and an added tail length of around 25 centimetres (9.8 in). The meerkat uses its tail to balance when standing upright, as well as for signaling. Its face tapers, coming to a point at the nose, which is brown. The eyes always have black patches around them, and they have small black crescent-shaped ears. Meerkats have binocular vision, with two eyes on the front of the face. At the end of each of a meerkat's "fingers" is a claw used for digging burrows and digging for prey. Claws are also used with muscular hindlegs to help climb trees. Meerkats have four toes on each foot and long slender limbs. The coat is usually peppered gray, tan, or brown with silver. They have short parallel stripes across their backs, extending from the base of the tail to the shoulders. The patterns of stripes are unique to each meerkat. The underside of the meerkat has no markings, but the belly has a patch which is only sparsely covered with hair and shows the black skin underneath. The meerkat uses this area to absorb heat while standing on its rear legs, usually early in the morning after cold desert nights. DIET AND FORAGING BEHAVIOUR Meerkats are primarily insectivores, but also eat other animals (lizards, snakes, scorpions, spiders, eggs, small mammals, millipedes, centipedes and, more rarely, small birds), plants and fungi (the desert truffle Kalaharituber pfeilii. Meerkats are immune to certain types of venom, including the very strong venom of the scorpions of the Kalahari Desert. Baby meerkats do not start foraging for food until they are about one month old, and they do so by following an older member of the group who acts as the pup's tutor. Meerkats forage in a group with one sentry watching for predators while the others search for food. Sentry duty is usually approximately an hour long. The meerkat standing guard makes peeping sounds when all is well. A meerkat has the ability to dig through a quantity of sand equal to its own weight in just seconds. Digging is done to create burrows, to get food and also to create dust clouds to distract predators. PREDATORS Martial eagles, tawny eagles and jackals are the main predators of meerkats. Meerkats sometimes die of snakebite in confrontations with snakes (puff adders and Cape cobras). REPRODUCTION Meerkats become sexually mature at about two years of age and can have one to four pups in a litter, with three pups being the most common litter size. Meerkats are iteroparous and can reproduce any time of the year. The pups are allowed to leave the burrow at two to three weeks old. There is no precopulatory display; the male may fight with the female until she submits to him and copulation begins. Gestation lasts approximately 11 weeks and the young are born within the underground burrow and are altricial (undeveloped). The young's ears open at about 10 days of age, and their eyes at 10–14 days. They are weaned around 49 to 63 days.[15] Usually, the alpha pair reserves the right to mate and normally kills any young not its own, to ensure that its offspring have the best chance of survival. The dominant couple may also evict the mothers of the offending offspring. New meerkat groups are often formed by evicted females joining a group of males. Females appear to be able to discriminate the odour of their kin from the odour of their non-kin. Kin recognition is a useful ability that facilitates cooperation among relatives and the avoidance of inbreeding. When mating does occur between meerkat relatives, it often results in negative fitness consequences or inbreeding depression. Inbreeding depression was evident for a variety of traits: pup mass at emergence from the natal burrow, hind-foot length, growth until independence and juvenile survival. These negative effects are likely due to the increased homozygosity that arises from inbreeding and the consequent expression of deleterious recessive mutations. The avoidance of inbreeding and the promotion of outcrossing allow the masking of deleterious recessive mutations. BEHAVIOUR Meerkats are small burrowing animals, living in large underground networks with multiple entrances which they leave only during the day, except to avoid the heat of the afternoon.They are very social creatures and they live in colonies together. Animals in the same group groom each other regularly. The alpha pair often scent-mark subordinates of the group to express their authority. There may be up to 30 meerkats in a group. To look out for predators, one or more meerkats stand sentry, to warn others of approaching dangers. When a predator is spotted, the meerkat performing as sentry gives a warning bark or whistle, and other members of the group run and hide in one of the many holes they have spread across their territory. Meerkats also babysit the young in the group. Females that have never produced offspring of their own often lactate to feed the alpha pair's young. They also protect the young from threats, often endangering their own lives. On warning of danger, the babysitter takes the young underground to safety and is prepared to defend them if the danger follows. Meerkats are also known to share their burrow with the yellow mongoose and ground squirrel. Like many species, meerkat young learn by observing and mimicking adult behaviour, though adults also engage in active instruction. For example, meerkat adults teach their pups how to eat a venomous scorpion: they will remove the stinger and help the pup learn how to handle the creature. Despite this altruistic behaviour, meerkats sometimes kill young members of their group. Subordinate meerkats have been seen killing the offspring of more senior members in order to improve their own offspring's position. When colonies are exposed to human presence for a long time, they will become habituated, which allows for documentation of their natural behavior. It is not unusual for camera crews, who must largely stay still for long periods while filming, to be utilized as convenient sentry posts. VOCALIZATION Meerkat calls may carry specific meanings, with particular calls indicating the type of predator and the urgency of the situation. In addition to alarm calls, meerkats also make panic calls, recruitment calls, and moving calls. They chirrup, trill, growl, or bark, depending on the circumstances. Meerkats make different alarm calls depending upon whether they see an aerial or a terrestrial predator. Moreover, acoustic characteristics of the call will change with the urgency of the potential predatory episode. Therefore, six different predatory alarm calls with six different meanings have been identified: aerial predator with low, medium, and high urgency; and terrestrial predator with low, medium, and high urgency. Meerkats respond differently after hearing a terrestrial predator alarm call than after hearing an aerial predator alarm call. For example, upon hearing a high-urgency terrestrial predator alarm call, meerkats are most likely to seek shelter and scan the area. On the other hand, upon hearing a high-urgency aerial predator alarm call, meerkats are most likely to crouch down. On many occasions under these circumstances, they also look towards the sky. MEERKATS AS PETS Meerkats, being wild animals, make poor pets. They can be aggressive, especially toward guests, and may bite. They will scent-mark their owner and the house (their "territory"). SOURCE: en.wikipedia.org/wiki/Meerkat

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