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Aotidae
Night monkeys, also known as owl monkeys or douroucoulis (), are nocturnal New World monkeys of the genus ''Aotus'', the only member of the family (biology), family Aotidae (). The genus comprises eleven species which are found across Panama and much of South America in primary and secondary forests, tropical rainforests and cloud forests up to . Night monkeys have large eyes which improve their vision at night, while their ears are mostly hidden, giving them their name ''Aotus'', meaning "earless". Night monkeys are the only truly nocturnal monkeys, although some Cathemerality, cathemeral populations of Azara's night monkey have irregular bursts of activity during day and night. They have a varied repertoire of vocalisations and live in small family groups of a pair bonding, mated pair and their immature offspring. Night monkeys have monochromacy, monochromatic vision which improves their ability to detect visual cues at night. Night monkeys are threatened by habitat loss, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 (), the only extant superfamily in the parvorder Platyrrhini (). Platyrrhini is derived from the Greek for "broad nosed", and their noses are flatter than those of other simians, with sideways-facing nostrils. Monkeys in the family Atelidae, such as the spider monkey, are the only primates to have prehensile tails. New World monkeys' closest relatives are the other simians, the Catarrhini ("down-nosed"), comprising Old World monkeys and apes. New World monkeys descend from African simians that colonized South America, a line that split off about 40 million years ago. Evolutionary history About 40 million years ago, the Simiiformes infraorder split into the parvorders Platyrrhini (New World monkeys) and Catarrhini (apes and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panamanian Night Monkey
The Panamanian night monkey or Chocoan night monkey (''Aotus zonalis'') is a species of night monkey formerly considered a subspecies of the gray-bellied night monkey of the family Aotidae. Its range consists of Panama and the Chocó region of Colombia. There are also unconfirmed reports of its occurrence in Costa Rica, especially on the Caribbean coast of Costa Rica. The species definitely occurs in the Atlantic lowlands of Panama close to the Costa Rica border. The exact classification of the Panamanian Night Monkey is uncertain. While some authors consider it a subspecies of the gray-bellied night monkey, ''A. lemurinus'', other authors follow a study by Thomas Defler from 2001, which concluded that it is a separate species, ''A. zonalis''. The Panamanian night monkey is a relatively small monkey, with males weighing approximately and females weighing about . The fur on the back ranges from grayish brown to reddish brown. The belly is yellow. The hair on the back o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aotus Griseimembra
The gray-handed night monkey (''Aotus griseimembra'') is a species of night monkey formerly considered a subspecies of Gray-bellied night monkey of the family Aotidae. Its range consists of parts of Colombia and Venezuela. The exact classification of the gray-handed night monkey is uncertain. While some authors consider it a subspecies of the gray-bellied night monkey, ''A. lemurinus'', other authors consider it a separate species, ''A. griseimembra''. In Colombia, its range consists of the northern portion from the Sinú River (or perhaps further east) to the Venezuelan border, including the Sierra Nevada de Santa Marta and the Magdalena River, Cauca River and Sao Jorge River valleys. In Venezuela, it is found to the west and south of Maracaibo. The gray-handed night monkey is a relatively small monkey, with males weighing approximately and females weighing about . It has short, tight fur. The fur on the back ranges from grayish brown to reddish brown. The belly is yello ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gray-bellied Night Monkey
The gray-bellied night monkey (''Aotus lemurinus''), also called the grey-legged douroucouli Royal Edinburgh Zoo or lemurine owl monkey, is a small of the family . Native to tropical and subtropical forests of , the gray-bellied night monkey faces a significant threat from hunting, harvesting for use in |
Aotus Zonalis
The Panamanian night monkey or Chocoan night monkey (''Aotus zonalis'') is a species of night monkey formerly considered a subspecies of the gray-bellied night monkey of the family Aotidae. Its range consists of Panama and the Chocó region of Colombia. There are also unconfirmed reports of its occurrence in Costa Rica, especially on the Caribbean coast of Costa Rica. The species definitely occurs in the Atlantic lowlands of Panama close to the Costa Rica border. The exact classification of the Panamanian Night Monkey is uncertain. While some authors consider it a subspecies of the gray-bellied night monkey, ''A. lemurinus'', other authors follow a study by Thomas Defler from 2001, which concluded that it is a separate species, ''A. zonalis''. The Panamanian night monkey is a relatively small monkey, with males weighing approximately and females weighing about . The fur on the back ranges from grayish brown to reddish brown. The belly is yellow. The hair on the back of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peruvian Night Monkey
The Peruvian night monkey (''Aotus miconax''), also known as the Andean night monkey, is a nocturnal New World monkey endemic to northern Peru. Adults weigh around and measure up to in length. Its colour is grey to light brown with characteristic black and white markings on the face. The chest, belly and upper arms are orange tinged, however, to a lesser extent then '' Aotus nigriceps''. The species is one of the least known and possibly rarest Neotropical primates. This species is listed as vulnerable by the IUCN and endangered under Peruvian Law. The Peruvian night monkey is also one of the least studied of all primates. The only data that exists about this species are museum specimens, sighting records and very basic ecological information. The species is thought to inhabit areas of cloud forest at above sea level in the departments of Amazonas, Huanuco and San Martin, and in border regions of neighboring departments. Behavior The species is monogamous and lives in sm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three-striped Night Monkey
The three-striped night monkey (''Aotus trivirgatus''), also known as northern night monkey or northern owl monkey, is one of several species of owl monkeys currently recognised. It is found in Venezuela and north-central Brazil. Until 1983, all the owl monkeys were regarded as subspecies of ''Aotus trivirgatus'', and all were referred to as douroucoulis. The use of the name douroucouli exclusively for the three-striped night monkey is not universally accepted; some authors use it for the entire genus, or for the grey-necked group of species within it (to which ''A. trivirgatus'' belongs). Like other owl monkeys, the three-striped night monkey lives in woodlands including rain forest. It is mainly black, with striking white markings on its face. Its body size is 27–48 cm, and its tail is about the same length again. Adults weigh up to 1 kg. It has very large eyes, and is most active on moonlit nights, feeding on fruit, nuts, leaves, insects and other small invertebra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aotus Brumbacki
Brumback's night monkey (''Aotus brumbacki'') is a species of night monkey found in Colombia. It has traditionally been considered a subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ... of gray-bellied night monkey, ''Aotus lemurinus''. However, it has recently been argued that it should be considered a separate species. References Brumback's night monkey Mammals of Colombia Endemic fauna of Colombia Brumback's night monkey Taxa named by Philip Hershkovitz {{newworld-monkey-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black-headed Night Monkey
The black-headed night monkey (''Aotus nigriceps'') is a night monkey species from South America. It is found in Brazil, Bolivia and Peru. The ''A. nigriceps'' in Peru were notably inhabiting areas that were degraded, and often these areas were disturbed either by human activities or natural occurrences in the ecosystem. A black-headed night monkey is about the same size as a small squirrel. Black-headed night monkeys have small ears that are hidden by their fur. When they become adults they are about 750g and usually are about 14 months old. Black-headed night monkeys have three black stripes that meet on their forehead. These monkeys have white patches by their eyes, cheeks, and under their mouth. Their eyes are very large and brown. Reproduction A newborn usually weighs about 90 to 150g. Sexual maturity for males is at 2 years and for females is about 3 or 4 years. They occur in between August and February. A female only gives birth to one infant each year. The males are the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nancy Ma's Night Monkey
Nancy Ma's night monkey (''Aotus nancymaae'') is a night monkey species from South America. It is found in Brazil and Peru. The species is named after Dr. Nancy Shui-Fong Ma. It is known in medical research as a model organism for studying the Duffy antigen Duffy antigen/chemokine receptor (DARC), also known as Fy glycoprotein (FY) or CD234 (Cluster of Differentiation 234), is a protein that in humans is encoded by the ''ACKR1'' gene. The Duffy antigen is located on the surface of red blood cells, .... Nancy Ma's night monkeys have also been found to have an evolutionary pattern change in the hormone oxytocin. It was believed that all placental mammals had the same OXT amino acid chain until the discovery of a change in this New World monkey and others. References Nancy Ma's night monkey Primates of Brazil Mammals of Peru Nancy Ma's night monkey Nancy Ma's night monkey Taxobox binomials not recognized by IUCN {{newworld-monkey-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azara's Night Monkey
Azara's night monkey (''Aotus azarae''), also known as the Azara's owl monkey, the southern night monkey, or the mirikiná, is a night monkey species from South America. It is found in Argentina, Bolivia, Brazil, Peru and Paraguay. The species is monogamous, with males providing a large amount of parental care. It is named after Spanish naturalist Félix de Azara. Although primarily nocturnal, some populations of Azara's night monkey are unique among night monkeys in being cathemeral: active at both day and night. The species is listed as Least Concern on the IUCN Red List. Taxonomy There are three subspecies of Azara's night monkey. * ''Aotus azarae azarae'' * Bolivian night monkey, ''Aotus azarae boliviensis'' * Feline night monkey, ''Aotus azarae infulatus'' Physical characteristics Due to a lack of data body size and weight measurements of Azara's night monkey have been estimated from a small number of wild samples. The average head and body length of the female is whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spix's Night Monkey
Spix's night monkey (''Aotus vociferans''), also known as the Colombian gray night monkey, noisy night monkey and Spix's owl monkey, is a night monkey species from South America. It is found in Brazil, Colombia, Ecuador and Peru. The Spix's night monkey is a small bodied monkey species usually having a mass of around one kilogram. It belongs to the only nocturnal genus of New World primates, '' Aotus''. This type of monkey can leap farther than most due to it having longer arms than legs. The monkey averages 0.5 meters in height. The night monkey is considered to be a new world monkey. The social behavior of the ''Aotus vociferans'' is group based. These groups usually consist of breeding pairs and their offspring. This species has a monogamous mating system. After the offspring are born, the father becomes the main caretaker, only giving up the offspring for them to suckle. The offspring will usually stay with their birth group until they reach two and a half to three and a hal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
