The Chromosomes of Aotus trivirgatus Humboldt 1812

Abstract

The karyotypes of 22 South American owl monkeys (Aotus trivirgatus) are surveyed. Animals were assigned on the basis of coat color variation to two previously described subspecies, Aotus trivirgatus griseimembra and Aotus trivirgatus trivirgatus. A Robertsonian polymorphism, distributed consistent with a Hardy-Weinberg equi librium, was found among 17 Aotus trivirgatus griseimembra, whose diploid numbers were 54, 53, and 52. The 5 Aotus trivirgatus trivirgatus all had diploid numbers of 54. Their karyotypes are significantly different from those of Aotus trivirgatus griseimembra, however, and may indicate the need for taxonomic re-classification.

The ancestral karyotype of platyrrhine monkeys

“…Although comparisons with other karyotypes previously published are difficult to make, it is obvious that the animals we studied have the same number of chromo somes as those studied by Miller et al (1977), but a different karyotype. Our karyo types seem to correspond to those published by Brumback et al (1971) for Aotus tri virgatus trivirgatus.…”

“…Variation in the numbers of chromosomes has been described in Aotus trivirgatus: chromosome numbers of 46 (Ma et a!.. 19766), 49-50 (Ma et al, 1976a;Yunis et al, 1977;Cambeiort and Moro, 1978), 52 (Ma et al, 19766;Miller et al, 1977), 54 (Brumback et al, 1971;de Boer et al, 1971;Ma et al, 1976a;M iller et al, 1977), and 56 (Bogart, 1978). The differences observed are the result of translocations (Robertsonian and others).…”

Mammalian Diversity and Matses Ethnomammalogy in Amazonian Peru Part 1: Primates

“…Although Hershkovitz (1983: 228) said that these specimens were from ''the series described by Brumback et al (1971),'' the FMNH mammal catalog states they originated from the Johns Hopkins Hospital Primate Colony, whereas Brumback et al's (1971) material came from other institutions. Instead, FMNH 123032 and 123033 are probably two of the three Johns Hopkins specimens karyotyped by Brumback (1973), who said they were collected in ''the Leticia, Colombia-Iquitos, Peru area of the Amazon Basin south [sic] of the Andes mountains'' (op.…”

An Unusual Karyotypic Observation on Cultured Cells from an Owl Monkey (Aotus Trivirgatus)

“…(Fig. a, b) represented by cells with the previously described trivirgatus karyotype (Brumback et al, 1971) and a chromosome number of 54 (Fig. b) together with cells with this same karyotype but with an additional, long, acrocentric chromosome, giving the chromosome number 55 (Fig.…”

“…More recently, Brumback et al (1971) have described karyotypic differences which correlated with the two sub-species of this animal. Individuals of the A. trivirgatus trivirgatus sub-species were found to possess a chromosome number of 54, whereas specimens of A. trivirgatus griseimnembra had either 54, 53 or 52 as a result of a Robertsonian polymorphism.…”