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Azara's night monkey
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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.
There are three subspecies of Azara's night monkey.
The average weight is 1,290 g (2.84 lb) for male A. a. azarae and 1,310 g (2.89 lb) for female A. a. azarae. The mean body weight in A. a. azarae has increased by about 50 g (0.11 lb) in the past two decades. The increase is potentially linked to climate change, as warmer temperatures during the first year of life associate with higher body weights later in life.
For A. a. boliviensis, the mean weight is 1,180 g (2.60 lb) for males and 1,230 g (2.71 lb) for females. The average head and body length of the female is 341 mm (13.4 in) while the male is 346 mm (13.6 in).[citation needed] Its gestation period is about 133 days. The lifespan for Azara's night monkey is unknown, but the captive life span for members of the genus Aotus is believed to be 20 years.
Azara's night monkey is assigned to the genus Aotus which is the only nocturnal genus of monkeys. However, uniquely among night monkeys, populations of Azara's night monkey from the Gran Chaco are active both day and night. Azara's night monkey can be found sleeping in groups of between 2 and 5 in trees. The average group size is about 3 monkeys, consisting of an adult pair and their offspring. It leaps from tree to tree but also moves quadrupedally throughout the forest. It spends its life in trees and becomes more active when the moon is brighter, tending to keep to its well-known paths.[citation needed]
Azara's night monkey is primarily a frugivore, but also will eat leaves, flowers, insects and other small invertebrates, and some small vertebrates. Leaves and flowers are a secondary food choice to fruits and is more typically consumed during the dry season as access to fruits become more scarce. Fruits consumed by this species are of the fig, guava, and nettle families as well as some cultivated species for monkeys living closer to urban areas. Examples of prey consumed by Azara's night monkeys are grasshoppers, moths, millipedes, and sometimes bird eggs or small animals. The hunting of insects occurs at dawn and dusk and is typically done by grabbing the insects midair rather than searching in crevices. As it is a nocturnal species, there is greatly reduced competition from diurnal animals.
Azara's night monkey is typical for monogamous animals and forms stable breeding bonds as it is genetically monogamous. It is a pair-bonded species and groups consist of one male, one female, and their young. These groups are typically made up of an adult male, an adult female, one infant, one to two juveniles and sometimes a sub adult if that offspring has not yet dispersed. It is strictly monogamous and no outside paternities have been found. Male care is especially important in this species and plays a role in its genetic monogamy. Food-sharing has been observed between pairs; a rare behavior in primate species. There is very little sexual dimorphism in this species.
Azara's night monkey will remain with its pair bonded partner typically until the other passes or is replaced by an intruder. The median duration for this bond is 9 years. It typically will only have 1-2 partners over its lifetime. While in a pair bond, it reproduces yearly. However, if a partner passes or is replaced there is a 1 year gap in reproduction. Both males and females are hostile to outsiders due to their monogamous nature.
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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.
There are three subspecies of Azara's night monkey.
The average weight is 1,290 g (2.84 lb) for male A. a. azarae and 1,310 g (2.89 lb) for female A. a. azarae. The mean body weight in A. a. azarae has increased by about 50 g (0.11 lb) in the past two decades. The increase is potentially linked to climate change, as warmer temperatures during the first year of life associate with higher body weights later in life.
For A. a. boliviensis, the mean weight is 1,180 g (2.60 lb) for males and 1,230 g (2.71 lb) for females. The average head and body length of the female is 341 mm (13.4 in) while the male is 346 mm (13.6 in).[citation needed] Its gestation period is about 133 days. The lifespan for Azara's night monkey is unknown, but the captive life span for members of the genus Aotus is believed to be 20 years.
Azara's night monkey is assigned to the genus Aotus which is the only nocturnal genus of monkeys. However, uniquely among night monkeys, populations of Azara's night monkey from the Gran Chaco are active both day and night. Azara's night monkey can be found sleeping in groups of between 2 and 5 in trees. The average group size is about 3 monkeys, consisting of an adult pair and their offspring. It leaps from tree to tree but also moves quadrupedally throughout the forest. It spends its life in trees and becomes more active when the moon is brighter, tending to keep to its well-known paths.[citation needed]
Azara's night monkey is primarily a frugivore, but also will eat leaves, flowers, insects and other small invertebrates, and some small vertebrates. Leaves and flowers are a secondary food choice to fruits and is more typically consumed during the dry season as access to fruits become more scarce. Fruits consumed by this species are of the fig, guava, and nettle families as well as some cultivated species for monkeys living closer to urban areas. Examples of prey consumed by Azara's night monkeys are grasshoppers, moths, millipedes, and sometimes bird eggs or small animals. The hunting of insects occurs at dawn and dusk and is typically done by grabbing the insects midair rather than searching in crevices. As it is a nocturnal species, there is greatly reduced competition from diurnal animals.
Azara's night monkey is typical for monogamous animals and forms stable breeding bonds as it is genetically monogamous. It is a pair-bonded species and groups consist of one male, one female, and their young. These groups are typically made up of an adult male, an adult female, one infant, one to two juveniles and sometimes a sub adult if that offspring has not yet dispersed. It is strictly monogamous and no outside paternities have been found. Male care is especially important in this species and plays a role in its genetic monogamy. Food-sharing has been observed between pairs; a rare behavior in primate species. There is very little sexual dimorphism in this species.
Azara's night monkey will remain with its pair bonded partner typically until the other passes or is replaced by an intruder. The median duration for this bond is 9 years. It typically will only have 1-2 partners over its lifetime. While in a pair bond, it reproduces yearly. However, if a partner passes or is replaced there is a 1 year gap in reproduction. Both males and females are hostile to outsiders due to their monogamous nature.
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