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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]
The evolutionary history of night monkeys (genus Aotus) is deeply rooted in the New World monkey lineage (Platyrrhini). They diverged from other New World monkeys around ~18.5 million years ago (Helenbrook 2024).
- 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
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. The Colombian night monkey (Aotus lemurinus) is known by...
The night monkey genus, Aotus, includes at least twelve species and three subspecies. ANDEAN NIGHT MONKEY. Aotus miconax. CONSERVATION STATUS: ENDANGERED. Andean night monkeys, also known as Peruvian night monkeys, are endemic to the South American country of Peru, in the Andes Mountains.
Sep 14, 2023 · Owl monkeys ( Aotus) offer a valuable counterexample to the primate and anthropoid trend, exhibiting a loss of visual acuity and color discrimination associated with their transition to nocturnality (Jacobs 1977b; Jacobs et al. 1996 ).
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Both males and females of Aotus trivirgatus are similar in size with a body length of 24 to 47 cm. Tail length ranges from 22 to 42 cm. Coats range from grizzled brown, gray or reddish backs and off white to orange undersides.
