Iracilda Sampaio
Biographic Data
| ID | 4298959 |
|---|---|
| NAME | Iracilda Sampaio |
| GIVEN NAMES | Iracilda |
| FAMILY NAME | Sampaio |
| SIGNATURE | SAMPAIO I |
| AFFILIATIONS | Universidade Federal do Pará |
| ORCID | 0000-0002-2137-4656 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 41 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1996 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Revisiting the relationships among howler monkeys through molecular phylogenetic analysis (Primates; Atelidae; Alouatta)
The howler monkeys ( Alouatta ) are part of the Platyrrhini infraorder, a group of Neotropical primates with the widest geographical distribution, occurring from southern Mexico to northern Argentina. Previous phylogenetic studies based on cytogenetic, morphological, and molecular data have shown inconsistent results, requiring new approaches to clarify relationships within the genus. In this study, we analyzed nine species of Alouatta using 24 m…
Molecular phylogenetic inference of the howler monkey radiation (Primates: (Alouatta)
Phylogenetic relationships in the genus Cheracebus (Callicebinae, Pitheciidae)
Cheracebus is a new genus of New World primate of the family Pitheciidae, subfamily Callicebinae. Until recently, Cheracebus was classified as the torquatus species group of the genus Callicebus . The genus Cheracebus has six species: C. lucifer, C. lugens, C. regulus, C. medemi, C. torquatus , and C. purinus , which are all endemic to the Amazon biome. Before the present study, there had been no conclusive interpretation of the phylogenetic rela…
Phylogeny of the titi monkeys of the Callicebus moloch group (Pitheciidae, Primates)
Callicebus is a Neotropical primate genus of the family Pitheciidae, which currently comprises 34 recognized species. Based on their morphological traits and geographic distribution, these species are currently assigned to five groups: the C. moloch, C. cupreus, C. donacophilus, C. torquatus, and C. personatus groups, although in the past, alternative arrangements have been proposed based on the analysis of morphological data. The principal disag…
Alu elements and the phylogeny of capuchin ( Cebus and Sapajus ) monkeys
Three families of New World monkeys, the Pitheciidae, Atelidae, and Cebidae, are currently recognized. The monophyly of the Cebidae is supported unequivocally by the presence of ten unique Alu elements, which are absent from the other two families. In this paper, the five genomic regions containing these Alu elements were sequenced in specimens representing nine capuchin (Cebus, Sapajus) species in order to identify mutations that may help elucid…
A molecular phylogeny of the tamarins (genus Saguinus ) based on five nuclear sequence data from regions containing Alu insertions
This study presents a molecular phylogeny of the Saguinus genus, based on the analysis of the DNA sequences of five nuclear loci with Alu insertions in 10 species. The concatenated alignment produced a polytomic arrangement with four main groups, although only two clades—the Amazonian ( S. midas , S. niger , and S. bicolor ) and the Colombian ( S. leucopus and S. oedipus ) tamarins—were statistically significant. The emergence of the midas ‐ bico…
Spider monkey, Muriqui and Woolly monkey relationships revisited
Sequences from the 5? flanking region of the ?-globin gene support the relationship ofCallicebuswith the pitheciins
The purpose of this study was to determine nucleotide sequences from the 5' flanking region of the epsilon-globin gene of selected platyrrhine primates and to analyze the data for phylogenetic information and estimated times of divergence. We report new sequence data for two species of New World monkeys, Callicebus torquatus and Pithecia irrorata. We analyzed these data in conjunction with homologous sequences from other primate species. The data…
Sequences from the 5′ flanking region of the ε‐globin gene support the relationship of Callicebus with the pitheciins
The purpose of this study was to determine nucleotide sequences from the 5′ flanking region of the ε-globin gene of selected platyrrhine primates and to analyze the data for phylogenetic information and estimated times of divergence. We report new sequence data for two species of New World monkeys, Callicebus torquatus and Pithecia irrorata. We analyzed these data in conjunction with homologous sequences from other primate species. The data suppo…
Update on the Phylogenetic Systematics of New World Monkeys: Further DNA Evidence for Placing the Pygmy Marmoset (Cebuella) within the Genus Callithrix
Phylogeny and Evolution of Selected Primates as Determined by Sequences of the ε-Globin Locus and 5′ Flanking Regions
Taxonomy of theAlouatta seniculus group: Biochemical and chromosome data
Molecular phylogeny of the New World monkeys (Platyrrhini, primates) based on two unlinked nuclear genes: IRBP intron 1 and ε-globin sequences
Nuclear sequences of the 1.8 kilobase (kb) long intron 1 of the interstitial retinol-binding protein gene (IRBP), previously determined for 11 of the 16 extant genera of New World monkeys (superfamily Ceboidea, infraorder Platyrrhini), have now been determined for the remaining 5 genera. The maximum parsimony trees found, first with IRBP sequences alone and then with tandemly combined IRBP and epsilon-globin gene sequences from the same species, …
Taxonomy of theAlouatta seniculus group: Biochemical and chromosome data
Molecular phylogeny of the New World monkeys (Platyrrhini, primates) based on two unlinked nuclear genes: IRBP intron 1 and ε-globin sequences
Nuclear sequences of the 1.8 kilobase (kb) long intron 1 of the interstitial retinol-binding protein gene (IRBP), previously determined for 11 of the 16 extant genera of New World monkeys (superfamily Ceboidea, infraorder Platyrrhini), have now been determined for the remaining 5 genera. The maximum parsimony trees found, first with IRBP sequences alone and then with tandemly combined IRBP and epsilon-globin gene sequences from the same species, …
Update on the Phylogenetic Systematics of New World Monkeys: Further DNA Evidence for Placing the Pygmy Marmoset (Cebuella) within the Genus Callithrix
Phylogeny and Evolution of Selected Primates as Determined by Sequences of the ε-Globin Locus and 5′ Flanking Regions
Sequences from the 5? flanking region of the ?-globin gene support the relationship ofCallicebuswith the pitheciins
The purpose of this study was to determine nucleotide sequences from the 5' flanking region of the epsilon-globin gene of selected platyrrhine primates and to analyze the data for phylogenetic information and estimated times of divergence. We report new sequence data for two species of New World monkeys, Callicebus torquatus and Pithecia irrorata. We analyzed these data in conjunction with homologous sequences from other primate species. The data…
Sequences from the 5′ flanking region of the ε‐globin gene support the relationship of Callicebus with the pitheciins
The purpose of this study was to determine nucleotide sequences from the 5′ flanking region of the ε-globin gene of selected platyrrhine primates and to analyze the data for phylogenetic information and estimated times of divergence. We report new sequence data for two species of New World monkeys, Callicebus torquatus and Pithecia irrorata. We analyzed these data in conjunction with homologous sequences from other primate species. The data suppo…
Spider monkey, Muriqui and Woolly monkey relationships revisited
A molecular phylogeny of the tamarins (genus Saguinus ) based on five nuclear sequence data from regions containing Alu insertions
This study presents a molecular phylogeny of the Saguinus genus, based on the analysis of the DNA sequences of five nuclear loci with Alu insertions in 10 species. The concatenated alignment produced a polytomic arrangement with four main groups, although only two clades—the Amazonian ( S. midas , S. niger , and S. bicolor ) and the Colombian ( S. leucopus and S. oedipus ) tamarins—were statistically significant. The emergence of the midas ‐ bico…
Alu elements and the phylogeny of capuchin ( Cebus and Sapajus ) monkeys
Three families of New World monkeys, the Pitheciidae, Atelidae, and Cebidae, are currently recognized. The monophyly of the Cebidae is supported unequivocally by the presence of ten unique Alu elements, which are absent from the other two families. In this paper, the five genomic regions containing these Alu elements were sequenced in specimens representing nine capuchin (Cebus, Sapajus) species in order to identify mutations that may help elucid…
Phylogeny of the titi monkeys of the Callicebus moloch group (Pitheciidae, Primates)
Callicebus is a Neotropical primate genus of the family Pitheciidae, which currently comprises 34 recognized species. Based on their morphological traits and geographic distribution, these species are currently assigned to five groups: the C. moloch, C. cupreus, C. donacophilus, C. torquatus, and C. personatus groups, although in the past, alternative arrangements have been proposed based on the analysis of morphological data. The principal disag…
Phylogenetic relationships in the genus Cheracebus (Callicebinae, Pitheciidae)
Cheracebus is a new genus of New World primate of the family Pitheciidae, subfamily Callicebinae. Until recently, Cheracebus was classified as the torquatus species group of the genus Callicebus . The genus Cheracebus has six species: C. lucifer, C. lugens, C. regulus, C. medemi, C. torquatus , and C. purinus , which are all endemic to the Amazon biome. Before the present study, there had been no conclusive interpretation of the phylogenetic rela…
Molecular phylogenetic inference of the howler monkey radiation (Primates: (Alouatta)
Revisiting the relationships among howler monkeys through molecular phylogenetic analysis (Primates; Atelidae; Alouatta)
The howler monkeys ( Alouatta ) are part of the Platyrrhini infraorder, a group of Neotropical primates with the widest geographical distribution, occurring from southern Mexico to northern Argentina. Previous phylogenetic studies based on cytogenetic, morphological, and molecular data have shown inconsistent results, requiring new approaches to clarify relationships within the genus. In this study, we analyzed nine species of Alouatta using 24 m…
Biology (10 works) · Zoology (10 works) · Phylogenetic tree (9 works) · Primate Behavior and Ecology (9 works) · Clade (8 works) · Evolutionary biology (7 works) · Gene (7 works) · Genetics (7 works) · Phylogenetics (6 works) · Animal ecology (5 works)