Estudos citogenéticos clássicos e moleculares em Alouatta clamitans (Primates, Platyrrhini): análise da variabilidade cromossômica dos bugios das regiões sul e sudeste do Brasil

Mitochondrial COII Gene Sequences Provide New Insights into the Phylogeny of Marmoset Species Groups (Callitrichidae, Primates)

“…3). This is consistent with conclusions based on morphological [29,30], ecological [31], vocal [32] and molecular [5,6] characteristics. The results throw little light onto the relationship between the remaining taxa, however.…”

Polygyny in a Free-Ranging Group of Buffy-Tufted-Ear Marmosets, Callithrix aurita

“…Population density, home range and most other aspects of the ecology of C. aurita were in fact far more similar to C.flaviceps [22] than to C.jacchus [13], as might be expected from the greater proximity of the former 2 taxa in both geographical and phylogenetic [23] terms. But while the C.flaviceps study group was much larger than that of C. aurita -with as many as 6 adult female members at any one time -it was strictly monogynous [17], If polygyny is accepted as a common pattern in the genus, then, explaining its absence in the C.flaviceps study group might be more pertinent than accounting for its occurrence in C. aurita.…”

Cytogenetic Study in a Specimen of Cebus apella with an Atypical Phenotype

“…In the most recent scheme of classification [4], C. apella is subdivided into 5 sub species: C. a. apella, C. a. libidinosus, C. a. robustus, C. a. nigritus and C. a. xanthosternos. Mudry et al [5] described a 6th subspecies in Argentina named C. a. vellerosus, which admittedly exhibits similarities to C. a. nigritus.…”

“…The G-and Q-banding patterns proposed [6] were based on a sample of 40 specimens of C. a. paraguayanus, which is considered [4] to be a subpopulation of the subspecies C. a. libidinosus. According to this banding pattern, all animals have a diploid number of 54 chromosomes, with 10 pairs of metacentrics and 16 pairs of acrocentrics making up the complement of autosomes.…”