Azara's night monkey
{{Short description|Species of New World monkey}}
{{Speciesbox
| name = Azara's night monkey{{MSW3 Groves|pages=139–140|id=12100300}}
| image = Aotus azarae infulatus.jpg
| image_caption = Azara's night monkey (A. a. infulatus) at Cristalino Jungle Lodge, Mato Grosso, Brazil
| status = LC
| status_system = IUCN3.1
| genus = Aotus
| species = azarae
| authority = (Humboldt, 1811)
| range_map = Azara's Night Monkey area.png
| range_map_caption = Azara's night monkey range
}}
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
Physical characteristics
File:Bollettino della Societá romana per gli studi zoologici (1896) (20391949975).jpg
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 {{Convert|341|mm|in|abbr=on}} while the male is {{Convert|346|mm|in|abbr=on}}.{{citation needed|date=June 2014}} The average weight is {{Convert|1254|g|lb|abbr=on}} for male A. a. azarae, {{Convert|1246|g|lb|abbr=on}} for female A. a. azarae, {{Convert|1180|g|lb|abbr=on}} for male A. a. boliviensis, and {{Convert|1230|g|lb|abbr=on}} for female A. a. boliviensis.{{cite web | last = Cawthon Lang | first = K.A. | date = 2005-07-18 | title = Primate Factsheets: Owl monkey (Aotus) Taxonomy, Morphology, & Ecology | publisher = Primate Info Net | url = http://pin.primate.wisc.edu/factsheets/entry/owl_monkey | accessdate = 2012-04-18}} 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.
Behavior and ecology
Azara's night monkey is a monogamous and pair-living species, with the male remaining present to raise the offspring and provide food.{{Citation |last=Garcia de la Chica |first=Alba |title=The Social Life of Owl Monkeys |date=2023 |work=Owl Monkeys: Biology, Adaptive Radiation, and Behavioral Ecology of the Only Nocturnal Primate in the Americas |pages=391–422 |editor-last=Fernandez-Duque |editor-first=Eduardo |url=https://link.springer.com/chapter/10.1007/978-3-031-13555-2_14 |access-date=2025-03-25 |place=Cham |publisher=Springer International Publishing |language=en |doi=10.1007/978-3-031-13555-2_14 |isbn=978-3-031-13555-2 |last2=Spence-Aizenberg |first2=Andrea |last3=Wolovich |first3=Christy K. |last4=Evans |first4=Sian |last5=Fernandez-Duque |first5=Eduardo|url-access=subscription }} The offspring will only stay with its family until two to three years of age and then will disperse to begin a family of its own. There is very little sexual dimorphism in this species.
Azara's night monkey is primarily a frugivore, but also will eat things such as leaves, flowers, and insects. One of the main advantages of being a nocturnal or cathemeral animal is that there is greatly reduced competition from diurnal animals.
Azara's night monkey spends its life in trees and becomes more active when the moon is brighter, tending to keep to its well-known paths. 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 others 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.
Habitat and distribution
Azara's night monkey is found in northern Argentina, Bolivia, central Brazil, Paraguay and far southeastern Peru. Its range includes the southern Amazon, ranging into more open habitats such as the Gran Chaco. Aotus a. azarae is found in gallery forest and semi-deciduous forest, A. a. infulatus is found in humid lowland forest and gallery forest, and A. a. infulatus is found in various forest types. The last has been recorded as high as {{convert|1250|m|ft|abbr=on}} in the Andean foothills.
Conservation
References
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External links
- {{usurped|1=[https://web.archive.org/web/20080104025836/http://www.theprimata.com/aotus_azarae.html Aotus azarae]}} information at ThePrimata.
- [http://www.mdanderson.org/education-and-research/departments-programs-and-labs/programs-centers-institutes/michale-e-keeling-center-for-comparative-medicine-and-research/animal-resources/kccmr-ombrr-aotus-the-owl-monkey-s-natural-history.html Aotus: The Owl Monkey's Natural History] at MD Anderson.
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