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.[3]

Nancy Ma's night monkey[1]
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Aotidae
Genus: Aotus
A. nancymaae
Binomial name
Aotus nancymaae
Nancy Ma's Night Monkey area.png
Nancy Ma's night monkey range

It is known in medical research as a model organism for studying the Duffy antigen. 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.[4]


  1. ^ Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. p. 140. ISBN 0-801-88221-4. OCLC 62265494.
  2. ^ Maldonado, A.; Guzman-Caro, D.; Shanee, S.; Defler, T.R. & Roncancio, N. (2017). "Aotus nancymaae". IUCN Red List of Threatened Species. 2017: e.T41540A121725532. doi:10.2305/IUCN.UK.2017-3.RLTS.T41540A121725532.en.
  3. ^ "Nancy Ma's Night Monkey, Aotus nancymaae | New England Primate Conservancy". 2022-02-16. Retrieved 2023-01-29.
  4. ^ Vargas-Pinilla, Pedro; Paixão-Côrtes, Vanessa Rodrigues; Paré, Pamela; Tovo-Rodrigues, Luciana; Vieira, Carlos Meton de Alencar Gadelha; Xavier, Agatha; Comas, David; Pissinatti, Alcides; Sinigaglia, Marialva; Rigo, Maurício Menegatti; Vieira, Gustavo Fioravanti (2014-12-22). "Evolutionary pattern in the OXT-OXTR system in primates: Coevolution and positive selection footprints". Proceedings of the National Academy of Sciences. 112 (1): 88–93. doi:10.1073/pnas.1419399112. ISSN 0027-8424. PMC 4291646. PMID 25535371.