Bonvicino Cibele R, Penna-Firme Valéria, do Nascimento Fabrícia F, Lemos Bernardo, Stanyon Roscoe, Seuánez Héctor N
Division of Genetics, Instituto Nacional de Câncer, Praça da Cruz Vermelha 23, 6o Andar, 20230-130 Rio de Haneiro, Brazil.
Folia Primatol (Basel). 2003 May-Jun;74(3):141-9. doi: 10.1159/000070647.
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.
对已知地理起源的卢氏伶猴（Callicebus lugens，洪堡，1811年）进行的形态学、分子学和核型分析支持了这一观点，即它是一个有效物种。形态学和形态测量分析表明，卢氏伶猴与同一类群的其他两个相关分类单元（纯色伶猴Callicebus purinus和白领伶猴Callicebus torquatus）之间存在明显差异。细胞色素b DNA分析（最大简约法、邻接法和最大似然法）一致表明，卢氏伶猴与torquatus组的Callicebus sp.在一个分支中存在紧密关联，另一个姐妹分支进一步分为两个进化枝：一个包含personatus组的物种，另一个包含moloch组的物种。核型分析表明，卢氏伶猴的二倍体染色体数是灵长目动物中最低的（2n = 16）。与其他同属物种的比较清楚地支持了这一观点，即卢氏伶猴在核型上与torquatus组的其他物种相似。
