Old World monkey is the common English name for a
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
of
primate
Primates are a diverse order of mammals. They are divided into the strepsirrhines, which include the lemurs, galagos, and lorisids, and the haplorhines, which include the tarsiers and the simians (monkeys and apes, the latter including huma ...
s known
taxonomically
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given ...
as the Cercopithecidae (). Twenty-four
genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...
and 138
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
are recognized, making it the largest primate family. Old World monkey genera include
baboon
Baboons are primates comprising the genus ''Papio'', one of the 23 genera of Old World monkeys. There are six species of baboon: the hamadryas baboon, the Guinea baboon, the olive baboon, the yellow baboon, the Kinda baboon and the chacma ba ...
s (genus ''
Papio''), red colobus (genus ''
Piliocolobus'') and
macaques (genus ''
Macaca''). Common names for other Old World monkeys include the
talapoin
__NOTOC__
Talapoins () are the two species of Old World monkeys classified in genus ''Miopithecus''. They live in central Africa, with their range extending from Cameroon and the Democratic Republic of the Congo to Angola.
With a typical length ...
,
guenon
The guenons (, ) are Old World monkeys of the genus ''Cercopithecus'' (). Not all members of this genus have the word "guenon" in their common names; also, because of changes in scientific classification, some monkeys in other genera may have co ...
,
colobus
Black-and-white colobuses (or colobi) are Old World monkeys of the genus ''Colobus'', native to Africa. They are closely related to the red colobus monkeys of genus '' Piliocolobus''. There are five species of this monkey, and at least eight subs ...
,
douc
The doucs or douc langurs make up the genus ''Pygathrix''. They are colobine Old World monkeys, native to Southeast Asia, which consists of these 3 species: red-shanked douc, black-shanked douc, and gray-shanked douc.
Description
The doucs ...
(douc langur, genus ''
Pygathrix
The doucs or douc langurs make up the genus ''Pygathrix''. They are colobine Old World monkeys, native to Southeast Asia, which consists of these 3 species: red-shanked douc, black-shanked douc, and gray-shanked douc.
Description
The doucs ar ...
''),
vervet
The vervet monkey (''Chlorocebus pygerythrus''), or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term "vervet" is also used to refer to all the members of the genus ''Chlorocebus''. The five distinct ...
,
gelada
The gelada (''Theropithecus gelada'', am, ጭላዳ, translit=č̣əlada), sometimes called the bleeding-heart monkey or the gelada baboon, is a species of Old World monkey found only in the Ethiopian Highlands, living at elevations of above se ...
,
mangabey
Mangabeys are West-African Old World monkeys, with species in three of the six genera of tribe Papionini.
The more typical representatives of ''Cercocebus'', also known as the white-eyelid mangabeys, are characterized by their bare, upper eye-l ...
(a group of genera),
langur
The Colobinae or leaf-eating monkeys are a subfamily of the Old World monkey family that includes 61 species in 11 genera, including the black-and-white colobus, the large-nosed proboscis monkey, and the gray langurs. Some classifications sp ...
,
mandrill
The mandrill (''Mandrillus sphinx'') is a large Old World monkey native to west central Africa. It is one of the most colorful mammals in the world, with red and blue skin on its face and posterior. The species is sexually dimorphic, as males ...
,
surili (''
Presbytis
The surilis are a group of Old World monkeys in the genus ''Presbytis''. They live in the Thai-Malay Peninsula, on Sumatra, Borneo, Java and smaller nearby islands. Besides surili, the common names for the monkeys in the genus also sometimes use ...
''),
patas
The common patas monkey (''Erythrocebus patas''), also known as the wadi monkey or hussar monkey, is a ground-dwelling monkey distributed over semi-arid areas of West Africa, and into East Africa.
Taxonomy
There is some confusion surrounding ...
, and
proboscis monkey. Phylogenetically, they are more closely related to
ape
Apes (collectively Hominoidea ) are a clade of Old World simians native to sub-Saharan Africa and Southeast Asia (though they were more widespread in Africa, most of Asia, and as well as Europe in prehistory), which together with its sister g ...
s than to
New World monkey
New World monkeys are the five families of primates that are found in the tropical regions of Mexico, Central and South America: Callitrichidae, Cebidae, Aotidae, Pitheciidae, and Atelidae. The five families are ranked together as the Ceboidea ...
s. They diverged from a common ancestor of New World monkeys around 45 to 55 million years ago.
The smallest Old World monkey is the talapoin, with a head and body 34–37 cm in length, and weighing between 0.7 and 1.3 kg. The largest is the male mandrill, around 70 cm in length, and weighing up to 50 kg.
Old World monkeys have a variety of facial features; some have
snouts, some are flat nosed, and many exhibit coloration. Most have tails, but they are not
prehensile
Prehensility is the quality of an appendage or organ (anatomy), organ that has Adaptation (biology), adapted for grasping or holding. The word is derived from the Latin term ''prehendere'', meaning "to grasp". The ability to grasp is likely der ...
.
Old World monkeys are native to Africa and Asia today, inhabiting numerous environments: tropical
rain forest
Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainforest ...
s,
savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to ...
s,
shrubland
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It m ...
s, and mountainous terrain. They inhabited much of Europe in the past; today, the only survivors in Europe are the
Barbary macaques of
Gibraltar
)
, anthem = " God Save the King"
, song = " Gibraltar Anthem"
, image_map = Gibraltar location in Europe.svg
, map_alt = Location of Gibraltar in Europe
, map_caption = United Kingdom shown in pale green
, mapsize =
, image_map2 = Gib ...
. Whether they are native to Gibraltar or were brought by humans is unknown.
Some Old World monkeys are
arboreal
Arboreal locomotion is the Animal locomotion, locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some animals may scale trees only occasionally, but others are exclusively arboreal. Th ...
, such as the
colobus
Black-and-white colobuses (or colobi) are Old World monkeys of the genus ''Colobus'', native to Africa. They are closely related to the red colobus monkeys of genus '' Piliocolobus''. There are five species of this monkey, and at least eight subs ...
monkeys; others are
terrestrial
Terrestrial refers to things related to land or the planet Earth.
Terrestrial may also refer to:
* Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...
, such as the
baboons. Most are at least partially
omnivorous
An omnivore () is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nutri ...
, but all prefer plant matter, which forms the bulk of their diets. Most are highly opportunistic, primarily eating fruit, but also consuming almost any food items available, such as flowers, leaves, bulbs and
rhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...
s, insects, snails, small mammals,
and garbage and handouts from humans.
Taxonomic classification and phylogeny
Two
subfamilies are recognized, the
Cercopithecinae
The Cercopithecinae are a subfamily of the Old World monkeys, which comprises roughly 71 species, including the baboons, the macaques, and the vervet monkeys. Most cercopithecine monkeys are limited to sub-Saharan Africa, although the macaques ...
, which are mainly African, but include the diverse
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
macaques, which are Asian and North African, and the
Colobinae
The Colobinae or leaf-eating monkeys are a subfamily of the Old World monkey family that includes 61 species in 11 genera, including the black-and-white colobus, the large-nosed proboscis monkey, and the gray langurs. Some classifications s ...
, which includes most of the Asian genera, but also the African colobus monkeys.
The
Linnaean classification
Linnaean taxonomy can mean either of two related concepts:
# The particular form of biological classification (taxonomy) set up by Carl Linnaeus, as set forth in his ''Systema Naturae'' (1735) and subsequent works. In the taxonomy of Linnaeus t ...
beginning with the
superfamily
SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...
is:
* Superfamily Cercopithecoidea
** Family Cercopithecidae: Old World monkeys
*** Subfamily
Cercopithecinae
The Cercopithecinae are a subfamily of the Old World monkeys, which comprises roughly 71 species, including the baboons, the macaques, and the vervet monkeys. Most cercopithecine monkeys are limited to sub-Saharan Africa, although the macaques ...
**** Tribe
Cercopithecini
Cercopithecini is a tribe of Old World monkey that includes several monkey species, including the vervet monkeys, talapoins, Allen's swamp monkeys and the guenons, all in Africa.
Classification
* Family Cercopithecidae
** Subfamily Cercopit ...
***** Genus ''
Allenopithecus
The Allen's swamp monkey (''Allenopithecus nigroviridis'') is a species of Old World monkey and the only member of the genus ''Allenopithecus''. Phylogenetically, it is a sister clade to the guenons, but differs in dentition and habits.
Allen' ...
'' – Allen's swamp monkey
***** Genus ''
Miopithecus
__NOTOC__
Talapoins () are the two species of Old World monkeys classified in genus ''Miopithecus''. They live in central Africa, with their range extending from Cameroon and the Democratic Republic of the Congo to Angola.
With a typical length o ...
'' – talapoins
***** Genus ''
Erythrocebus'' – patas monkeys
***** Genus ''
Chlorocebus
''Chlorocebus'' is a genus of medium-sized primates from the family of Old World monkeys. Six species are currently recognized, although some people classify them all as a single species with numerous subspecies. Either way, they make up the enti ...
''
***** Genus ''
Cercopithecus
The guenons (, ) are Old World monkeys of the genus ''Cercopithecus'' (). Not all members of this genus have the word "guenon" in their common names; also, because of changes in scientific classification, some monkeys in other genera may have ...
'' – guenons
***** Genus ''
Allochrocebus
''Allochrocebus'' is a primate genus including the terrestrial guenons: the L'Hoest's monkey, the Preuss's monkey, and the sun-tailed monkey.
Taxonomy & systematics
Formerly included in genus ''Cercopithecus'', the three species of terrestrial g ...
'' – terrestrial guenons
**** Tribe
Papionini
Papionini is a tribe of Old World monkeys that includes several large monkey species, which include the macaques of North Africa and Asia, as well as the baboons, geladas, mangabeys, kipunji, drills, and mandrills, which are essentially from sub- ...
***** Genus ''
Macaca'' – macaques
***** Genus ''
Lophocebus
The crested mangabeys are West African Old World monkeys belonging to the genus ''Lophocebus''. They tend to have dark skin, eyelids that match their facial skin, and crests of hair on their heads. Another genus of mangabeys, ''Cercocebus'', was ...
'' – crested mangabeys
***** Genus ''
Rungwecebus
The kipunji (''Rungwecebus kipunji''), also known as the highland mangabey, is a species of Old World monkey that lives in the highland forests of Tanzania. The kipunji has a unique call, described as a 'honk-bark', which distinguishes it from i ...
'' – kipunji
***** Genus ''
Papio'' – baboons
***** Genus ''
Theropithecus
''Theropithecus'' is a genus of primates in the family Cercopithecidae. It contains a single living species, the gelada (''Theropithecus gelada''), native to the Ethiopian Highlands
The Ethiopian Highlands is a rugged mass of mountains in Et ...
'' – gelada
***** Genus ''
Cercocebus'' – white-eyelid mangabeys
***** Genus ''
Mandrillus
''Mandrillus'' is a genus of large Old World monkeys distributed throughout central and southern Africa, consisting of two species: ''M. sphinx'' and ''M. leucophaeus'', the mandrill and drill, respectively. ''Mandrillus'', originally placed und ...
'' – mandrill and drill
*** Subfamily
Colobinae
The Colobinae or leaf-eating monkeys are a subfamily of the Old World monkey family that includes 61 species in 11 genera, including the black-and-white colobus, the large-nosed proboscis monkey, and the gray langurs. Some classifications s ...
**** African group
***** Genus ''
Colobus
Black-and-white colobuses (or colobi) are Old World monkeys of the genus ''Colobus'', native to Africa. They are closely related to the red colobus monkeys of genus '' Piliocolobus''. There are five species of this monkey, and at least eight subs ...
'' – black-and-white colobuses
***** Genus ''
Piliocolobus'' – red colobuses
***** Genus ''
Procolobus'' – olive colobus
**** Langur (leaf monkey) group
***** Genus ''
Semnopithecus
Gray langurs, also called Hanuman langurs and Hanuman monkeys, are Old World monkeys native to the Indian subcontinent constituting the genus ''Semnopithecus''. Traditionally only one species ''Semnopithecus entellus'' was recognized, but since a ...
'' – gray langurs or Hanuman langurs
***** Genus ''
Trachypithecus
The lutungs, langurs, or leaf monkeys are a group of Old World monkeys in the genus ''Trachypithecus'' (derived from Greek , meaning "rough" and , meaning "monkey"). Their range is much of Southeast Asia (northeast India, Vietnam, southern Chin ...
'' – lutungs
***** Genus ''
Presbytis
The surilis are a group of Old World monkeys in the genus ''Presbytis''. They live in the Thai-Malay Peninsula, on Sumatra, Borneo, Java and smaller nearby islands. Besides surili, the common names for the monkeys in the genus also sometimes use ...
'' – surilis
**** Odd-nosed group
***** Genus ''
Pygathrix
The doucs or douc langurs make up the genus ''Pygathrix''. They are colobine Old World monkeys, native to Southeast Asia, which consists of these 3 species: red-shanked douc, black-shanked douc, and gray-shanked douc.
Description
The doucs ar ...
'' – doucs
***** Genus ''
Rhinopithecus
__NOTOC__
Snub-nosed monkeys are a group of Old World monkeys and make up the entirety of the genus ''Rhinopithecus''. The genus is rare and not fully researched. Some taxonomists group snub-nosed monkeys together with the genus '' Pygathrix''.
...
'' – snub-nosed monkeys
***** Genus ''
Nasalis'' – proboscis monkey
***** Genus ''
Simias'' – pig-tailed langur
The distinction between apes and
monkeys
Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as the simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes, which constitutes an incomple ...
is complicated by the traditional
paraphyly
In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and most of its descendants, excluding a few monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ...
of
monkeys
Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as the simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes, which constitutes an incomple ...
: Apes emerged as a sister group of Old World monkeys in the
catarrhines
The parvorder Catarrhini , catarrhine monkeys, Old World anthropoids, or Old World monkeys, consisting of the Cercopithecoidea and apes (Hominoidea). In 1812, Geoffroy grouped those two groups together and established the name Catarrhini, "Old W ...
, which are a sister group of New World monkeys. Therefore,
cladistically
Cladistics (; ) is an approach to biological classification in which organisms are categorized in groups ("clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is typically shared derived char ...
, apes, catarrhines and related contemporary extinct groups, such as
Parapithecidae
Parapithecidae is an extinct family of primates which lived in the Eocene and Oligocene periods in Egypt. Eocene fossils from Myanmar are sometimes included in the family in addition. They showed certain similarities in dentition to Condylarthra, ...
, 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
''Aegyptopithecus'' ("Egyptian ape", from Greek ''Αίγυπτος'' "Egypt" and ''πίθηκος'' "ape") is an early fossil catarrhine that predates the divergence between hominoids ( apes) and cercopithecids (Old World monkeys). It is kno ...
'', in which case the apes, Cercopithecoidea and ''Aegyptopithecus'' as well as (under an even more expanded definition) even the
Platyrrhini emerged within the Old World monkeys. Historically, monkeys from the "Old World" (Afro-Arabia), somehow drifted to the "New World" some 40 million years ago, forming the "New World monkeys" (platyrrhines). Apes would emerge later within the Afro-Arabia group.
Characteristics
Old World monkeys are medium to large in size, and range from
arboreal
Arboreal locomotion is the Animal locomotion, locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some animals may scale trees only occasionally, but others are exclusively arboreal. Th ...
forms, such as the
colobus monkeys
Black-and-white colobuses (or colobi) are Old World monkeys of the genus ''Colobus'', native to Africa. They are closely related to the red colobus monkeys of genus '' Piliocolobus''. There are five species of this monkey, and at least eight subs ...
, to fully terrestrial forms, such as the baboons. The smallest is the
talapoin
__NOTOC__
Talapoins () are the two species of Old World monkeys classified in genus ''Miopithecus''. They live in central Africa, with their range extending from Cameroon and the Democratic Republic of the Congo to Angola.
With a typical length ...
, with a head and body 34–37 cm in length, and weighing between 0.7 and 1.3 kilograms, while the largest is the male
mandrill
The mandrill (''Mandrillus sphinx'') is a large Old World monkey native to west central Africa. It is one of the most colorful mammals in the world, with red and blue skin on its face and posterior. The species is sexually dimorphic, as males ...
(the females of the species being significantly smaller), at around 70 cm in length, and weighing up to 50 kilograms.
Most Old World monkeys have tails (the family name means "tailed ape"), unlike the tailless apes. The tails of Old World monkeys are not
prehensile
Prehensility is the quality of an appendage or organ (anatomy), organ that has Adaptation (biology), adapted for grasping or holding. The word is derived from the Latin term ''prehendere'', meaning "to grasp". The ability to grasp is likely der ...
, unlike those of the
New World monkey
New World monkeys are the five families of primates that are found in the tropical regions of Mexico, Central and South America: Callitrichidae, Cebidae, Aotidae, Pitheciidae, and Atelidae. The five families are ranked together as the Ceboidea ...
s (platyrrhines).
The distinction of catarrhines from platyrrhines depends on the structure of the
rhinarium
The rhinarium (New Latin, "belonging to the nose"; plural: rhinaria) is the furless skin surface surrounding the external openings of the nostrils in many mammals. Commonly it is referred to as the tip of the ''snout'', and breeders of cats and ...
, and the distinction of Old World monkeys from apes depends on
dentition
Dentition pertains to the development of teeth and their arrangement in the mouth. In particular, it is the characteristic arrangement, kind, and number of teeth in a given species at a given age. That is, the number, type, and morpho-physiolo ...
(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
Dentition pertains to the development of teeth and their arrangement in the mouth. In particular, it is the characteristic arrangement, kind, and number of teeth in a given species at a given age. That is, the number, type, and morpho-physiolo ...
of:
Several Old World monkeys have anatomical oddities. For example, the
colobus
Black-and-white colobuses (or colobi) are Old World monkeys of the genus ''Colobus'', native to Africa. They are closely related to the red colobus monkeys of genus '' Piliocolobus''. There are five species of this monkey, and at least eight subs ...
monkeys have stubs for thumbs to assist with their arboreal movement, the
proboscis monkey has an extraordinary nose, while the
snub-nosed monkey
__NOTOC__
Snub-nosed monkeys are a group of Old World monkeys and make up the entirety of the genus ''Rhinopithecus''. The genus is rare and not fully researched. Some taxonomists group snub-nosed monkeys together with the genus '' Pygathrix''.
S ...
s have almost no nose at all.
The
penis
A penis (plural ''penises'' or ''penes'' () is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. Such organs occur in many animals, both vertebrate and invertebrate, but males do n ...
of the male
mandrill
The mandrill (''Mandrillus sphinx'') is a large Old World monkey native to west central Africa. It is one of the most colorful mammals in the world, with red and blue skin on its face and posterior. The species is sexually dimorphic, as males ...
is red and the
scrotum
The scrotum or scrotal sac is an anatomical male reproductive structure located at the base of the penis that consists of a suspended dual-chambered sac of skin and smooth muscle. It is present in most terrestrial male mammals. The scrotum cont ...
is
lilac
''Syringa'' is a genus of 12 currently recognized species of flowering plant, flowering woody plants in the olive family or Oleaceae called lilacs. These lilacs are native to woodland and scrub from southeastern Europe to eastern Asia, and wid ...
; the face is also brightly colored. The coloration is more pronounced in dominant males.
[Setchell, Joanna M., and Alan F. Dixson.]
Developmental variables and dominance rank in adolescent male mandrills (Mandrillus sphinx)
" American Journal of Primatology 56.1 (2002): 9-25.
Habitat and distribution
The Old World
monkey
Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as the simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes, which constitutes an incomple ...
s are native to
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...
and
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...
today, inhabiting numerous environments: tropical
rain forest
Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainforest ...
s,
savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to ...
s,
shrubland
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It m ...
s, and mountainous terrain. They inhabited much of
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
during the
Neogene
The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. ...
period;
today the only survivors in Europe are the
Barbary macaques of
Gibraltar
)
, anthem = " God Save the King"
, song = " Gibraltar Anthem"
, image_map = Gibraltar location in Europe.svg
, map_alt = Location of Gibraltar in Europe
, map_caption = United Kingdom shown in pale green
, mapsize =
, image_map2 = Gib ...
.
Behaviour and ecology
Diet
Most Old World monkeys are at least partially
omnivorous
An omnivore () is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nutri ...
, 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
rhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...
s, insects, snails, and even small vertebrates.
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.
[Ciani, Andrea Camperio, Loredana Martinoli, Claudio Capiluppi, Mohamed Arahou, and Mohamed Mouna. "Effects of Water Availability and Habitat Quality on Bark-Stripping Behavior in Barbary Macaques." Conservation Biology 15.1 (n.d.): 259-65. JSTOR. Web. 14 Nov. 2012.]
Reproduction
Gestation
Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). It is typical for mammals, but also occurs for some non-mammals. Mammals during pregna ...
in the Old World monkeys lasts between five and seven months. Births are usually single, although, as with humans, twins occur occasionally. 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.
Social systems
In most species, daughters remain with their mothers for life, so that the basic social group among Old World monkeys is a
matrilineal
Matrilineality is the tracing of kinship through the female line. It may also correlate with a social system in which each person is identified with their matriline – their mother's Lineage (anthropology), lineage – and which can in ...
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 variable, even within species, depending on the availability of food and other resources.
See also
*
List of Old World monkey species
Old World monkeys are all simian primates. They are more closely related to the apes than they are to the New World monkeys.
Taxonomic classification
* Infraorder Simian, Simiiformes
** Parvorder Catarrhini
*** Superfamily Old World monkey, Cer ...
*
List of primates by population
This is a list of primate species by estimated global population. This list is not comprehensive, as not all primates have had their numbers quantified.
See also
* Lists of organisms by population
*Lists of mammals by population
*Human popul ...
References
External links
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{{Authority control
Old World monkeys
Extant Oligocene first appearances