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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]
Mar 13, 2024 · What is an owl monkey and where do they live? The owl monkeys are a group of 10 species in the genus Aotus, split into two groups. Previously the genus just contained one species with several...
- 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
Night monkeys (Aotus), also known as owl monkeys, are New World primates found across Central and South America, ranging from Panama to northern Argentina. Belonging to the family Aotidae, they are characterized by their nocturnal lifestyle and distinctive owl-like appearance.
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. Its range is limited by geographical barriers: the…
Sep 14, 2023 · Morphological studies consider the genus to have a close affinity to the Pitheciidae, whereas molecular studies consider that the affinity of Aotus is closest to the Cebidae. Aotus is a sibling species complex, making it difficult for researchers to distinguish species based on external phenotype.
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Sep 14, 2016 · Owl monkeys are arboreal, quadrupedal, small-bodied platyrrhines (New World monkeys), with body masses ranging from 0.7 to 1.2 kg. Species differ in body mass by as much as 50 percent, with nocturnal Aotus species from the tropics being smaller than A. azarae from the South American Chaco (Fernandez-Duque 2011 ).
