The Karyology of South American Primates and Their Relationship to African and Asian Species

Chiarelli, Andrea

doi:10.1007/978-1-4684-3764-5_19

Cited by 14 publications

(12 citation statements)

References 20 publications

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“…Cytogenetic data also support this sister-group relationship. The diploid chromosome number in Brachyteles and Lagothrix is the same (2n ϭ 62), and as observed by Chiarelli (1980Chiarelli ( , 1982 and Viegas-Pequinot et al (1985), all chromosome pairs, except pair 5, are very similar. Some minor differences of banding patterns are due to the presence of intercalary chromatin in the karyotype of Lagothrix, which Viegas-Pequinot et al (1985) attribute to one reciprocal translocation and three inversions.…”

Section: The Brachytelan (Brachyteles Lagothrix) Cladesupporting

confidence: 59%

“…On the other hand, Alouatta has diploid number that varies from 44 to 53 (Armada et al, 1987;Lima and Seuanez, 1991;Stanyon et al, 1995). The further fact that the diploid number of Ateles varies from 32 to 34 (Chiarelli, 1980;Pieczarka et al, 1989) suggests that the diploid number of 62 is a synapomorphy for the sister-grouping of Lagothrix and Brachyteles.…”

Section: The Brachytelan (Brachyteles Lagothrix) Cladementioning

confidence: 90%

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Molecular Phylogeny of Ateline New World Monkeys (Platyrrhini, Atelinae) Based on γ-Globin Gene Sequences: Evidence ThatBrachytelesIs the Sister Group ofLagothrix

Meireles

Czelusniak

Schneider

et al. 1999

Molecular Phylogenetics and Evolution

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Section: The Brachytelan (Brachyteles Lagothrix) Cladesupporting

confidence: 59%

Section: The Brachytelan (Brachyteles Lagothrix) Cladementioning

confidence: 90%

Molecular Phylogeny of Ateline New World Monkeys (Platyrrhini, Atelinae) Based on γ-Globin Gene Sequences: Evidence ThatBrachytelesIs the Sister Group ofLagothrix

Meireles

Czelusniak

Schneider

et al. 1999

Molecular Phylogenetics and Evolution

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“…This confirmed all previous molecular topologies Barroso et al 1997;Meireles 1997;Porter et al 1997a;Canavez et al 1999a) contrary to all previously proposed morphologic arrangements (Rosenberger 1984;Ford 1986;Kay 1990). Molecular topologies were, however, coincident with karyotypic data showing 2n=62 in Brachyteles-Lagothrix and 2n=32-34 in Ateles (Chiarelli 1980(Chiarelli , 1982.…”

Section: Molecular Data and Phylogenetic Analysesmentioning

confidence: 64%

Can molecular data place each neotropical monkey in its own branch?

et al. 2001

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Four different DNA datasets, representative of all extant neotropical primate genera, were tandemly aligned, comprising some 6,763 base pairs (bp) with 2,086 variable characters and 674 informative sites. Maximum Parsimony, Maximum Likelihood and Neighbor-Joining analyses suggested three monophyletic families (Atelidae, Pitheciidae and Cebidae) that emerged almost at the same time during primate radiation. Combined molecular data showed congruent branching inside the atelid clade, placing Alouatta as the most basal lineage followed by Ateles and a more derived branch including Brachyteles and Lagothrix as sister groups. In the Pitheciidae, Callicebus was the most basal lineage with respect to Pithecia and to the more derived sister groups (Cacajao and Chiropotes). Conjoint analysis strongly supported the monophyly of the Cebidae, grouping Aotus, Cebus and Saimiri with the small callitrichines. Within callitrichines, Cebuella merged with Callithrix, Callimico appeared as a sister group of Callithrix/Cebuella, Leontopitecus as a sister group of the previous clade, and Saguinus was the earliest callitrichine offshoot. Two major points remained to be clarified in platyrrhine phylogeny: (i) the exact branching pattern of Aotus, Cebus, Saimiri and the callitrichines, and (ii), which two of these three families (Atelidae, Pitheciidae and Cebidae) are more closely related to one another.

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“…As far as the dentition, vomeronasal organ, and other features are con cerned, Saimiri sciureus repeatedly has been called a relatively primitive member of the ceboid primates [Maier, 1977[Maier, , 1980Rosenberger, 1977;Chiarelli, 1980;Sarich and Cronin, 1980]. Such a general statement cannot be true for all structures of course, and one obviously specialized character is found in the interorbital region.…”

Section: Introductionmentioning

confidence: 86%

Morphology of the Interorbital Region of Saimiri sciureus

Maier¹

1983

IJFP

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The skull of the platyrrhine primate Saimiri sciureus is distinguished by a large interorbital fenestra. Juvenile skulls still show a bony interorbital septum with some small gaps. A morphogenetic study was undertaken to better understand the structures of the interorbital region, which represents a linkage between the base of the braincase and the nasal skeleton. Already in early ontogenetic stages a reduction of the posterior portion of the nasal capsule and of the cartilaginous interorbital septum are observed, resulting in the formation of a primary interorbital fenestra. A bony interorbital septum is mainly formed in perinatal age stages by ossification of the presphenoid and by medial fusion of the frontals; the primary interorbital fenestra is retained as a small opening. It only occurs in late juvenile stages when the definitive interorbital fenestra develops by secondary transformation of bone into a membrane of dense connective tissue; this process is most probably caused by mechanical friction of the very closely approximated eyes of both sides.

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The Karyology of South American Primates and Their Relationship to African and Asian Species

Cited by 14 publications

References 20 publications

Molecular Phylogeny of Ateline New World Monkeys (Platyrrhini, Atelinae) Based on γ-Globin Gene Sequences: Evidence ThatBrachytelesIs the Sister Group ofLagothrix

Molecular Phylogeny of Ateline New World Monkeys (Platyrrhini, Atelinae) Based on γ-Globin Gene Sequences: Evidence ThatBrachytelesIs the Sister Group ofLagothrix

Can molecular data place each neotropical monkey in its own branch?

Morphology of the Interorbital Region of Saimiri sciureus

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