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The lowest diploid number (2n=16) yet found in any primate: Callicebus lugens (Humboldt, 1811)

  1. Author:
    Bonvicino, C. R.
    Penna-Firme, V.
    do Nascimento, F. F.
    Lemos, B.
    Stanyon, R.
    Seuanez, H. N.

  2. Author Address

    Univ Fed Rio de Janeiro, Div Genet, Inst Nacl Canc, Prace Cruz Vermelha 23,6 Andar, BR-20230130 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro, Div Genet, Inst Nacl Canc, BR-20230130 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro, Dept Trop Med, Inst Oswaldo Cruz Fiocruz, BR-20230130 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro, Dept Genet, BR-20230130 Rio De Janeiro, Brazil NCI, Comparat Mol Cytogenet Core Genet Branch, Frederick, MD 21701 USA Seuanez HN Univ Fed Rio de Janeiro, Div Genet, Inst Nacl Canc, Prace Cruz Vermelha 23,6 Andar, BR-20230130 Rio De Janeiro, Brazil
    1. Year: 2003
  2. Journal: Folia Primatologica
    1. 74
    2. 3
    3. Pages: 141-149
  4. Type of Article: Article
  1. Abstract:

    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. Copyright (C) 2003 S. Karger AG, Basel.

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