The Chromosomes of Some Platyrrhini (Callicebus, Ateles and Saimiri)

Egozcue, J.; Perkins, Edwin J.; Hagemenas, F.; Ford, Daena

doi:10.1159/000155256

Cited by 33 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chromosome dimorphism has also been described for pair A2 [Egozcue et al, 1969;Egozcue, 1972;Lau and Arrighi, 1976;this paper]. In this case, the difference in length affects the heterochromatic nucleolar organizer, and was interpreted by Egozcue [1972] as due to the insertion of part of a chromosome into its homologue.…”

Section: Discussionmentioning

confidence: 70%

“…The polymorphism affecting the nonacrocentric/acrocentric ratio was inter preted by Egozcue et al [1969] as due to pericentric inversions. This opinion was supported by the results of Srivastava et al [1969] andDe Boer [1974], and confirmed by the banding studies carried out by Ma et al [1974], The peri centric inversions produced two acrocentric pairs, Cl and C2 out of two nonacrocentric pairs, B5 and B11, or vice versa.…”

Section: Discussionmentioning

confidence: 99%

“…The X was a long submetacentric and the Y a very small acrocentric. Later, Egozcue et al [1969], Srivastava et al [1969] and de Boer [1974] described chromosome complements including 14 nonacrocentric and 7 acrocentric pairs, 15 nonacrocentric and 6 acrocentric pairs and 16 nonacrocentric and 5 acrocentric pairs. These dif ferences were interpreted as due pericentric inversions.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Chromosomal Polymorphism and Somatic Segregation in Saimiri sciureus

Garcı́a¹,

Miró²,

Ponsà³

et al. 1979

IJFP

Self Cite

View full text Add to dashboard Cite

Quinacrine (Q) and Giemsa (G) banding, and sister chromatid exchange (SCE) studies have been carried out in Saimiri sciureus. In one male and one female studied, the diploid number was 2n = 44 and the karyotype corresponded to that described for the geographical region of Georgetown, Guyana. In the second male three different cell lines were observed, one corresponding to the geographical region of Leticia (Colombia), another to the geographical location of Iquitos (Peru) and a third line with 46 chromosomes. In the three lines, pair A2 was heterozygous, with nucleolar organizers of different size, and pair B6 was also heterozygous, with different amounts of heterochromatin in the short arms. The presence of three different cell lines in this male may be due to a mechanism of somatic segregation. The chromosomal changes involved in the intraspecific polymorphism found in Saimiri have been reinterpreted.

show abstract

Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Chromosomal Polymorphism and Somatic Segregation in Saimiri sciureus

Garcı́a¹,

Miró²,

Ponsà³

et al. 1979

IJFP

Self Cite

View full text Add to dashboard Cite

show abstract

“…in Barros et al, 2000] and 2n = 20 in C. torquatus [C. t. torquatus in Benirschke & Bogart, 1976]. The diploid chromosome number reported in this last species was, until now, the lowest recorded in any primate [see also Egozcue et al, 1969]. Comparisons with other Neotropical primates indicated that Callicebus is a karyotypically shuffled taxon when compared to other, more conserved groups [Stanyon et al, 2000].…”

mentioning

confidence: 88%

“…2n = 50 can be found in C. hoffmannsi [Rodrigues et al, 2001] and C. donacophilus [C. moloch donacophilus in de Boer, 1974;Minezawa & Borda, 1984]; 2n = 48 in C. moloch [C. m. moloch in Pieczarka & Nagamachi, 1988] and C. brunneus [C. m. brunneus in Minezawa et al, 1989]; 2n = 46 in Callicebus sp. of the moloch group [C. moloch in Egozcue et al, 1969], C. cupreus [C. m. cupreus in Benirschke & Brownhill, 1963;de Boer, 1974;Benirschke & Bogart, 1976] and C. ornatus [C. m. ornatus in de Boer, 1974]; 2n = 22 in Callicebus sp. of the torquatus group [C. torquatus sp.…”

mentioning

confidence: 99%

The Lowest Diploid Number (2n = 16) yet Found in Any Primate: Callicebus lugens (Humboldt, 1811)

Bonvicino¹,

Penna-Firme²,

Nascimento³

et al. 2003

IJFP

View full text Add to dashboard Cite

Morphologic, molecular and karyologic analyses of Callicebus lugens (Humboldt, 1811) of known geographic origin supported the proposition that this is a valid species. Morphologic and morphometric analyses showed evident differences between C. lugens and two other related taxa of the same group (Callicebus purinus and Callicebus torquatus). Cytochrome b DNA analyses (maximum parsimony, neighbour joining and maximum likelihood) were congruent in showing a strong association between C. lugens and Callicebus sp. of the torquatus group in one branch and a sister branch further divided into two clades: one with species of the personatus group and another, with species of the moloch group. Karyotypic analysis showed that C. lugens has the lowest diploid chromosome number of the primate order (2n = 16). Comparisons with other congeneric species clearly supported the proposition that C. lugens is karyotypically similar to others of the torquatus group.

show abstract

Radiation and speciation of spider monkeys, genusAteles, from the cytogenetic viewpoint

et al. 1997

View full text Add to dashboard Cite

The chromosomes of 22 animals of four subspecies of the genus Ateles (A. paniscus paniscus, A. p. chamek, A. belzebuth hybridus, and A. b. marginatus) were compared using G/C banding and NOR (nucleolar organizer region) staining methods. The cytogenetic data of Ateles in the literature were also used to clarify the phylogenetic relationships of the species and subspecies and to infer the routes of radiation and speciation of these taxa. Chromosomes 6 and 7 that showed more informative geographic variation and the apomorphic form 4/12, exclusively in A. p. paniscus, are the keys for understanding the evolution, radiation, and specification of the Ateles taxa. The ancestral populations of the genus originated in the southwestern Amazon Basin (the occurrence area of A. paniscus chamek) and spread in the Amazon Basin and westward, crossing the Andes and colonizing Central America and northwesternmost regions of South America. The evolutionary history of the northern South American taxa is interpreted using the model of biogeographical evolution postulated by Haffer [Science 185:131–137, 1969]. Ateles paniscus paniscus is the genetically most differentiated form and probably derives from A. belzebuth hybridus. Based on the karyotype differences, the populations of Ateles can be divided into four different group. These findings indicate the necessity of a more coherent taxonomic arrangement for the taxa of Ateles. Am. J. Primatol. 42:167–178, 1997. © 1997 Wiley‐Liss, Inc.

show abstract

The Chromosomes of Some Platyrrhini (Callicebus, Ateles and Saimiri)

Cited by 33 publications

References 0 publications

Chromosomal Polymorphism and Somatic Segregation in Saimiri sciureus

Chromosomal Polymorphism and Somatic Segregation in Saimiri sciureus

The Lowest Diploid Number (2n = 16) yet Found in Any Primate: Callicebus lugens (Humboldt, 1811)

Radiation and speciation of spider monkeys, genusAteles, from the cytogenetic viewpoint

Contact Info

Product

Resources

About