Nagamachi C Y, Pieczarka J C, Schwarz M, Barros R M, Mattevi M S
Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Am J Primatol. 1997;41(1):53-60. doi: 10.1002/(SICI)1098-2345(1997)41:1<53::AID-AJP5>3.0.CO;2-Z.
The karyotypes of four marmoset species of the Callithrix jacchus group (C. aurita, C. kuhlii, C. geoffroyi, and C. penicillata) were investigated. The patterns of G-, C-, and NOR-bands of these karyotypes were compared with those of C. jacchus, previously described, in order to clarify the taxonomic relationships of this species group. All species present 2n = 46, 14 uni- and 30 biarmed autosomes, a median size submetacentric X chromosome, and the same NOR-band patterns. No rearrangement or constitutive heterochromatic variation differentiate these species, which differ only in the morphology of the Y chromosome. The data obtained indicate that, from the chromosomal point stand, the marmoset species of C. jacchus group constitute a homogeneous clade.
对狨属雅氏狨类群（金头狨、库氏狨、杰氏狨和白领狨）的四个物种的核型进行了研究。将这些核型的G带、C带和核仁组织区带模式与先前描述的雅氏狨的模式进行比较，以阐明该物种群的分类关系。所有物种均具有2n = 46，14条单臂和30条双臂常染色体，一条中等大小的亚中着丝粒X染色体，以及相同的核仁组织区带模式。这些物种之间没有重排或组成型异染色质变异，仅在Y染色体形态上有所不同。所获得的数据表明，从染色体角度来看，雅氏狨类群的狨猴物种构成一个同质进化枝。
