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معنى القرد بالانجليزية
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The crested mona monkey, also known as the crowned guenon, crowned monkey, golden-bellied guenon, or golden-bellied monkey, (Cercopithecus pogonias), is a species of African primate in the family Cercopithecidae found in west central Africa.
The crested mona monkey is a medium-sized, long tailed arboreal monkey with the females being smaller than the males but showing similar colouration and pattern of coat. They have a brown coat speckled with grey which becomes black on its lower arms and legs and on the base of its long tail. The rump, belly and the insides of the legs are golden-yellow contrasting with the rest of the fur. The males have a distinctive blue scrotum. Their faces are mainly dark blue with a pink muzzle. Around the face the fur is yellow marked with a wide black stripes which runs from the beside the eyes over to the temples and across the centre of the fore where it forms the characteristic small crest which gives this species its common name.[4][5]
Western central Africa from the Cross River in Nigeria and southern Cameroon south to Cabinda, Angola, including Bioko Island, and east into the Central African Republic, eastern Congo and the northern Democratic Republic of Congo.[5]
The Crested mona monkey occurs in mature lowland rainforest, in both primary and secondary forest, where there is a well developed canopy and with a clear understorey. Will also occur in flooded forest but avoids small forest patches, gallery forests and open secondary forest with a dense understorey.[5]
معنى القرد بالانجليزية
The crested mona monkey is a highly vocal species with a wide repertoire of calls. Both males and females have vocal sacs which are inflated to be used as resonators. A typical call is the booming call made by the adult male which can be heard more than 2m away. Social interactions include tail twining between resting monkeys and a ritualised display.[5]
The crested mona monkey is an agile species, which crosses large gaps between trees by jumping. They are normally found in groups of between 8 and 2 individuals which are typically made up of a single male, several females and their dependent offspring. Groups are highly vocal, with the males producing the loud, “boom” mentioned above announcing their presence and status, there is also a sharp hacking call which is used as an alarm. The dominant males are able to establish groups, and therefore the lives of most males are rather solitary and are marked by an absence of social contact. Surprisingly, this appears to lead to some males joining groups of other monkeys such as the black colobus Colobus satanas, where these solitary males can form strong group bonds with the bon conspecific monkeys, possibly resulting in a permanent loss of mating opportunities. The social groups of crested mona monkeys will also associate with other guenon species, especially with moustached guenon Cercopithecus cephus and greater spot-nosed monkey Cercopithecus nictitans . These large mixed-species groups grant the monkeys’ increasedprotection from predation, as the greater number of eyes on the sky means that the spotting of predators such as birds of prey is more likely, and it also facilitates the sharing of information between groups about the best foraging sites.[6]
The crested mona monkey is mainly frugivorous but invertebrates are also frequently taken, along with small quantities of leaves. Unlike most guenons, populations of the crested mona monkey in the northern parts of its range are known to migrate over long distances to forage for seasonally abundant food supplies. The crested mona monkey has a polygynous mating system where the dominant male in each group has exclusive breeding access to all the females in that group. Breeding seem to take place at any time of year, and the females give birth to a single baby after a gestation period of roughly five months.[6]
This species sits within the mona superspecies grouping within Cercopithecus.[5] There does not seem to be a consensus around how many subspecies of the crested mona monkey are recognised and some which were formerly considered subspecies of this species are now regarded as species in their own right, e.g. Wolf’s mona monkey Cercopithecus wolfi and Dent’s mona monkey Cercopithecus denti. Three subspecies appear to be the most widely accepted treatment.[3]
The subspecies and their ranges are:[5]
The subspecies schwarzianus is not now generally recognised.[5]
Cercopithecinae – 12 genera
Colobinae – 11 genera
The Old World monkeys or Cercopithecidae are a family of catarrhines, the only family in the superfamily Cercopithecoidea in the clade (or parvorder) of Catarrhini.
The Old World monkeys are native to Africa and Asia today, inhabiting a range of environments from tropical rain forest to savanna, shrubland and mountainous terrain, and are also known from Europe in the fossil record. However, a (possibly introduced) free-roaming group of monkeys still survives in Gibraltar (Europe) to this day. Old World monkeys include many of the most familiar species of non-human primates, such as baboons and macaques. Currently, 138 species are recognised, making Cercopithecidae the largest primate family.
Old World monkeys are medium to large in size, and range from arboreal forms, such as the colobus monkeys, to fully terrestrial forms, such as the baboons. The smallest is the talapoin, with a and body 34–37 cm in length, and weighing between .7 and 1.3 kilograms, while the largest is the male mandrill (the females of the species being significantly smaller), at around 7 cm in length, and weighing up to 5 kilograms.[2]
معنى القرد بالانجليزية
By superficial appearance, Old World monkeys are unlike apes in that most have tails (the family name means “tailed ape”) and, unlike the New World monkeys (platyrrhines), in that their tails are never prehensile. Technically, the distinction of catarrhines from platyrrhines depends on the structure of the nose, and the distinction of Old World monkeys from apes depends on dentition (the number of teeth is the same in both, but they are shaped differently). In platyrrhines, the nostrils face sideways, while in catarrhines, they face downward. Other distinctions include both a tubular ectotympanic (ear bone), and eight, not twelve, premolars in catarrhines, giving them a dental formula of: 2.1.2.32.1.2.3
Several Old World monkeys have anatomical oddities. For example, the colobus monkeys have stubs for thumbs to assist with their arboreal movement, the proboscis monkey has an extraordinary nose, while the snub-nosed monkeys have almost no nose at all.
The male mandrill’s penis is red and the scrotum is lilac the face is also brightly colored. The coloration is more pronounced in dominant males.[3]
Most Old World monkeys are at least partially omnivorous, but all prefer plant matter, which forms the bulk of their diet. Leaf monkeys are the most vegetarian, subsisting primarily on leaves, and eating only a small number of insects, while the other species are highly opportunistic, primarily eating fruit, but also consuming almost any food items available, such as flowers, leaves, bulbs and rhizomes, insects, snails, and even small vertebrates.[2] The Barbary macaque’s diet consists mostly of leaves and roots, though it will also eat insects and uses cedar trees as a water source.[4]
Gestation in the Old World monkeys lasts between five and seven months. Births are usually single, although, as with humans, twins occur from time to time. The young are born relatively well-developed, and are able to cling onto their mother’s fur with their hands from birth. Compared with most other mammals, they take a long time to reach sexual maturity, with four to six years being typical of most species.
In most species, daughters remain with their mothers for life, so that the basic social group among Old World monkeys is a matrilineal troop. Males leave the group on reaching adolescence, and find a new troop to join. In many species, only a single adult male lives with each group, driving off all rivals, but others are more tolerant, establishing hierarchical relationships between dominant and subordinate males. Group sizes are highly iable, even within species, depending on the availability of food and other resources.[2]
Two subfamilies are recognized, the Cercopithecinae, which are mainly African, but include the diverse genus of macaques, which are Asian and North African, and the Colobinae, which includes most of the Asian genera, but also the African colobus monkeys.
The distinction between apes and monkeys is complicated by the traditional paraphyly of monkeys: Apes emerged as a sister group of Old World Monkeys in the catarrhines, which are a sister group of New World Monkeys. Therefore, cladistically, apes, catarrhines and related contemporary extinct groups such as Parapithecidae are monkeys as well, for any consistent definition of “monkey”. “Old World monkey” may also legitimately be taken to be meant to include all the catarrhines, including apes and extinct species such as Aegyptopithecus,[5] in which case the apes, Cercopithecoidea and Aegyptopithecus and (under an even more expanded definition) even the Platyrrhini[6] emerged within the Old World monkeys.
1