title: Comparative chromosomal study of five taxa of genus Callithrix, group jacchus (Platyrrhini, Primates).
abstract: 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.
authors.affiliation: Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: C Y
authors.initials: CY
authors.lastname: Nagamachi
authors.forename: J C
authors.initials: JC
authors.lastname: Pieczarka
authors.forename: M
authors.initials: M
authors.lastname: Schwarz
authors.forename: R M
authors.initials: RM
authors.lastname: Barros
authors.forename: M S
authors.initials: MS
authors.lastname: Mattevi
mesh_terms: D000818:Animals; D001938:Brazil; D002144:Callithrix / Q000145:classification* / Q000235:genetics; D002871:Chromosome Banding / Q000662:veterinary*; D005260:Female; D007621:Karyotyping / Q000662:veterinary; D008297:Male