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  1. This taxonomy is based on both morphological characteristics and genetic data. Species include Aotus nigriceps (black-headed night monkey), Aotus nancymaae (Nancy Ma's night monkey), and several others, each adapted to specific regions and ecological conditions.

  2. en.wikipedia.org › wiki › Night_monkeyNight monkey - Wikipedia

    A primary distinction between red-necked and gray-necked night monkeys is spatial distribution. Gray-necked night monkeys (Aotus lemurinus group) are found north of the Amazon River, while the red-necked group (Aotus azare group) are localized south of the Amazon River. [11]

  3. Mar 13, 2024 · Azara’s night monkey (Aotus azarae) lives in the Gran Chaco region of South America, according to the New England Primate Conservancy.

    • Molecular Markers and Species Identification
    • Phylogenetic Considerations
    • Evolutionary, Karyological and Taxonomic Considerations

    Our findings showed different MT-CO1, MT-CO2, MT-CYB and SRY haplotypes between Aotus species although some SRY haplotypes differed by only one nucleotide (see Figure 2A), as was the case of A. infulatus (IN2) when compared to A. azarae boliviensis (AB1) and A. nigriceps(NI2). Identification based on MT-CO2was shown to be unreliable for closely rel...

    Analyses of the different datasets showed that Dat-CO1 contained the highest number of PI sites (182), closely followed by Dat-CYB (181), while Dat-CO2, showed the lowest number (66). This might be related to the smaller size of MT-CO2 (696 bp) respective to MT-CO1 (1,557 bp) and MT-CYB (1,140 bp) although a similar number of PI sites was found in ...

    Our phylogenetic reconstructions question the classical grouping of red neck and grey neck species proposed by Hershkovitz . All phylogenetic reconstructions based on mtDNA showed that the lineage leading to the grey neck species A. trivirgatus was a sister lineage of the one leading to the red neck clade (A. nigriceps (A. azarae, A. infulatus)). I...

    • Albert N Menezes, Cibele R Bonvicino, Hector N Seuánez
    • 2010
  4. First described in 1823 by German naturalist Johann Baptist von Spix, Spix’s night monkey (Aotus vociferans)—also known as the Colombian gray night monkey, noisy night monkey, or Spix’s owl monkey—is found north of the Amazon River in Brazil, Colombia, Ecuador, and Peru.

  5. The northern night monkey is listed as Least Concern by the International Union for Conservation of Nature’s Red List of Threatened Species (IUCN, 2018). They are widespread in their range, yet they are threatened by habitat loss.

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  7. animaldiversity.org › accounts › AotidaeADW: Aotidae: INFORMATION

    Night monkeys are found in southern Central America through South America as far south as Bolivia, northeastern Argentina, and Paraguay. The genus Aotus is the second most widely distributed New World monkey genus, with howler monkeys being more widely distributed. (Cawthon Lang and Fernandez-Duque, 2005; Martin, 2004; Nowak, 1991)

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