Aotus from the southwestern Amazon region is geographically and chromosomally intermediate betweenA. azarae boliviensis andA. infulatus

Pieczarka, Júlio César; Barros, Regina Maria de Souza; Faria, F. M. de; Nagamachi, Cleusa Yoshiko

doi:10.1007/bf02381390

Cited by 26 publications

(17 citation statements)

References 18 publications

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“…All of them possess 49(male)/50(female) karyotypes, with the exception of A. nigriceps (51m/52f). These findings suggest that the southern expansion of Aotus was gradual (e.g., only one chromosomal fission event and the maintenance of the Y-autosomal fusion event in southern males), with species diversifying steadily in different points in time, not through multiple splits or population bottlenecks (Pieczarka et al, 1993(Pieczarka et al, , 1998Torres et al, 1998). This scenario would fit with the paleogeographic history of the South American continent and the Amazon River, including the formation of the gigantic inland Lago Amazonas by the Andean uplift 9 Ma and its drainage 5.0-2.5 Ma, as well as the more recent establishment of southern rivers and the draining of the South American Chaco (Rosenberger et al, 2009).…”

Section: Chronology Of Coii Aotus Phylogenymentioning

confidence: 92%

mtDNA diversity in azara's owl monkeys (Aotus azarai azarai) of the Argentinean Chaco

Babb

Fernández-Duque

Baiduc

et al. 2011

American J Phys Anthropol

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Owl monkeys (Aotus spp.) inhabit much of South America yet represent an enigmatic evolutionary branch among primates. While morphological, cytogenetic, and immunological evidence suggest that owl monkey populations have undergone isolation and diversification since their emergence in the New World, problems with adjacent species ranges, and sample provenance have complicated efforts to characterize genetic variation within the genus. As a result, the phylogeographic history of owl monkey species and subspecies remains unclear, and the extent of genetic diversity at the population level is unknown. To explore these issues, we analyzed mitochondrial DNA (mt DNA) variation in a population of wild Azara's owl monkeys (Aotus azarai azarai) living in the Gran Chaco region of Argentina. We sequenced the complete mitochondrial genome from one individual (16,585 base pairs (bp)) and analyzed 1,099 bp of the hypervariable control region (CR) and 696 bp of the cytochrome oxidase II (COII) gene in 117 others. In addition, we sequenced the mitochondrial genome (16,472 bp) of one Nancy Ma's owl monkey (A. nancymaae). Based on the whole mtDNA and COII data, we observed an ancient phylogeographic discontinuity among Aotus species living north, south, and west of the Amazon River that began more than eight million years ago. Our population analyses identified three major CR lineages and detected a high level of haplotypic diversity within A. a. azarai. These data point to a recent expansion of Azara's owl monkeys into the Argentinean Chaco. Overall, we provide a detailed view of owl monkey mtDNA variation at genus, species, and population levels.

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Section: Chronology Of Coii Aotus Phylogenymentioning

confidence: 92%

mtDNA diversity in azara's owl monkeys (Aotus azarai azarai) of the Argentinean Chaco

Babb

Fernández-Duque

Baiduc

et al. 2011

American J Phys Anthropol

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“…Across the area, the various forms of Aotus occupy habitat types that range from evergreen rain forests to semideciduous dry forests. They likewise show dramatic variation in chromosome number (2n=46-54, Defler et al 2001;Galbreath 1983;Hershkovitz 1983;Ma et al 1985;Pieczarka et al 1993;Torres et al 1998), body mass (800-1350 g; Aquino and Encarnación 1986a, b;Fernandez-Duque 2007;Smith and Jungers 1997), and activity pattern. Most species are strictly nocturnal, whereas at least one is cathemeral, with activity taking place during the day and at night (Erkert and Grober 1986;Fernandez-Duque 2003;Fernandez-Duque and Erkert 2006;Wright 1989).…”

Section: Introductionmentioning

confidence: 94%

Behavior, Ecology, and Demography of Aotus vociferans in Yasuní National Park, Ecuador

2008

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Given its broad geographical distribution, Aotus is a productive genus for comparative studies that evaluate how different ecological factors influence the morphology, behavior, ecology, and demography of closely related species. During 18 mo we collected demographic, ranging, and activity data from owl monkeys (Aotus vociferans) in Yasuní National Park in eastern Ecuador. To collect demographic data, we monitored the trail system several times per week searching for groups. To characterize patterns of activity, we recorded the time when the subjects began and ended their nocturnal activity, and we collected data on range use and daily path length during 12 full-moon and 12 new-moon night follows of 1 radiocollared group. They ranged in size between 3 and 5 individuals (n=4 groups). All groups were strictly nocturnal, beginning their activity between 1800 and 1900 h and finishing it between 0500 and 0600 h. The territory size of the radiocollared group was 6.3 ha. On average, the subjects traveled 645 m per night (±286 m) and ranged farther during full-moon than new-moon nights. The owl monkeys used a small number of preferred daytime sleeping trees. Our data conform well with previous studies of other tropical owl monkeys from Colombia and Perú. A comparison of tropical owl monkeys with more temperate Aotus azarai from the Int Argentinean Gran Chaco reveals that grouping patterns, day range length, and territory size are relatively conserved across the genus despite dramatic differences in body size and activity pattern.

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“…The inversion breakpoints of the human 10a/16a association, presumably linking Atelidae and Pitheciidae, also have to be better analyzed. Pieczarka et al 1992Pieczarka et al , 1993Torres et al 1998). Chromosome painting was first applied to metaphases of Aotus nancymaae, showing that the karyotype of owl monkeys is highly derived.…”

Section: Cebidaementioning

confidence: 99%

Neotropical primate evolution and phylogenetic reconstruction using chromosomal data

Dumas

Mazzoleni

2017

The European Zoological Journal

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Platyrrhini are a group of Neotropical primates living in central and south America, and have been extensively studied through morphological and molecular data in order to shed light on their phylogeny and evolution. Agreement on the main clades of Neotropical primates has been reached using different approaches, but many phylogenetic nodes remain under discussion. Contrasting hypotheses have been proposed, presumably due to different markers and the presence of polymorphisms in the features considered; furthermore, neither Neotropical primate biodiversity nor their taxonomy are entirely known. In our perspective, a cytogenetic approach can help by making an important contribution to the evaluation of the phylogenetic relationships among Platyrrhini. In this work, molecular cytogenetic data regarding the principal nodes of the Neotropical monkey tree have been reviewed; classical cytogenetic data have also been considered, especially when other data have proven elusive, permitting us to discuss highly derived karyotypes characterized by a wide range of diploid numbers of chromosomes and variable chromosomal evolution with different rearrangement and polymorphism rates.

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Aotus from the southwestern Amazon region is geographically and chromosomally intermediate betweenA. azarae boliviensis andA. infulatus

Cited by 26 publications

References 18 publications

mtDNA diversity in azara's owl monkeys (Aotus azarai azarai) of the Argentinean Chaco

mtDNA diversity in azara's owl monkeys (Aotus azarai azarai) of the Argentinean Chaco

Behavior, Ecology, and Demography of Aotus vociferans in Yasuní National Park, Ecuador

Neotropical primate evolution and phylogenetic reconstruction using chromosomal data

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