Primates

, Volume 30, Issue 1, pp 81–88 | Cite as

Karyotypic study of titi monkeys,Callicebus moloch brunneus

  • Mitsuru Minezawa
  • Otto Carlos Jordan C.
  • C. Jaime Valdivia B.
Article

Abstract

A karyotypic study on a subspecies of the dusky titi,Callicebus moloch brunneus, was carried out and a third karyotype ofC. moloch was discovered. The chromosome number of this subspecies is 48. The autosomes consist of 5 subtelocentric, 5 submeta- or metacentric, and 13 acrocentric chromosome pairs. The X chromosome and the Y chromosome are submetacentric and metacentric, respectively.

A comparative study with other subspecies of theC. moloch group (i.e.,C. m. cupreus andC. m. ornatus with 2n=46 andC. m. donacophilus with 2n=50) suggests that the karyotype ofbrunneus occupies a position intermediate between the two other karyotypes ofC. moloch, but nearer to that of 2n=50. The presumed total differences betweenbrunneus andcupreus comprise one Robertsonian rearrangement, one centromeric transposition and four pericentric inversions, and those betweenbrunneus anddonacophilus involve one translocation or breakage (possibly corresponding to two events, that is, one Robertsonian rearrangement and one centromeric transposition).

Key Words

Callicebus moloch brunneus New World monkey Karyotype Comparative cytogenetics Differentiation 

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Copyright information

© Japan Monkey Centre 1989

Authors and Affiliations

  • Mitsuru Minezawa
    • 1
  • Otto Carlos Jordan C.
    • 2
  • C. Jaime Valdivia B.
    • 3
  1. 1.Kyoto UniversityJapan
  2. 2.Zoo Municipal Santa Cruz, Fauna SudamericaSanta CruzBolivia
  3. 3.Instituto Bioclinico CentralSanta CruzBolivia

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