Chromosoma

, Volume 104, Issue 5, pp 348–357

Comparative karyology and evolution of the Amazonian Callithrix (Platyrrhini, Primates)

  • Flavio Canavez
  • Gilda Alves
  • Thomas G. Fanning
  • Héctor N. Seuánez
Original Papers

DOI: 10.1007/BF00337224

Cite this article as:
Canavez, F., Alves, G., Fanning, T.G. et al. Chromosoma (1996) 104: 348. doi:10.1007/BF00337224

Abstract

Chromosomal studies in three species of Amazonian Callithrix (2n=44) and data in the literature show that this group is karyomonotypic. Moreover, it is characterized by the presence of abundant heterochromatic regions, unlike the situation in congeneric forms of Callithrix of the Atlantic coast with 2n=46, and by the presence of a highly repetitive, exclusive DNA component, with a basic repeat motif of 1528 bp. Karyotypic comparisons with other Callitrichids and an outgroup species showed that Callitrichids are karyologically conserved and explained several rearrangements that had presumably occurred during their phyletic radiation. Analyses of karyologic data enabled the construction of two alternative phylogenetic topologies. The lack of derived homoeologies, common to all members of the genus Callithrix grouped at present, and the fact that Amazonian species were more similar to Cebuella pygmaea (2n=44) than to their congeneric forms with 2n=46 suggested that species at present included in the Amazonian Callithrix should be grouped with C. pygmaea.

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • Flavio Canavez
    • 1
    • 2
  • Gilda Alves
    • 1
    • 3
  • Thomas G. Fanning
    • 3
  • Héctor N. Seuánez
    • 1
    • 2
  1. 1.Genetics SectionInstituto Nacional de Câncer (INCa)Rio de JaneiroBrazil
  2. 2.Department of GeneticsUniversidade Federal do Rio de Janeiro (UFRJ)Brazil
  3. 3.Department of Cellular PathologyArmed Forces Institute of Pathology (AFIP)Washington, DCUSA