Chromosome comparison among five species of platyrrhini (Alouatta caraya, Aotus azarae, Callithrix jacchus, Cebus apella, andSaimiri sciureus)

Abstract

ABSTRACT. Karyotypes of 82 individuals from five Platyrrhini species (Alouatta caraya, Aotus azarae, Callithrix jacchus, Cebus apella, and Saimiri sciureus) were studied and compared using a G-banding technique. Cytogenetic analysis showed full chromosome or full arm homologies among these geographically neighbouring species. A small number of chromosomal rearrangements (inversions, deletions, and translocations) could be detected among these taxa. These five species are closely related in chromosomal evolution. An interesting correspondance was found between Cebus apella chromosomes and those of the other four species. AIouatta caraya and Cebus apella are the closest species. Callithrixjaechus and Aotus azarae would have the most separated karyotypes.

Morphological and Genetic Characterization of Saimiri boliviensis

“…All of them, 27 males and 19 females, were in the following breeding or exhibition centers: 6 females and 18 males from Estación Biológica Corrientes (EBCo, ex-CAPRIM; San Cayetano, Corrientes Province), 6 males from Complejo Ecológico Municipal (Roque Saenz Peña, Chaco Province), 7 females from Buenos Aires Zoological Garden (Buenos Aires city), 1 female from Cordoba Zoological Garden (Córdoba, Córdoba Province), and 5 females and 3 males from La Plata Zoological Garden (La Plata, Buenos Aires Province). We reevaluated published data of our group Mudry de Pargament et al 1982;Mudry et al 1990;Szapkievich et al 2002) and studied 8 new specimens: the female from Cordoba Zoological Garden and 4 males and 3 females from EBCo. All specimens from EBCo originated from a colony started with individuals from Santa Cruz de la Sierra, Bolivia.…”

Expression of common fragile sites in two Ceboidea species: Saimiri boliviensis and Alouatta caraya (Primates: Platyrrhini)

“…Taking into account the chromosome homologies previously described in SBO, ACA and CAP [43], a homologous c-fra at band Xq22 was observed in all three species. This finding is in agreement with the well-known conservation of the X chromosome [12,43,57,67,68]. The three species also conserved a c-fra at bands 3q31 from CAP, B 1 q14 from SBO and 2q22 from ACA.…”

“…In order to analyze the conservation of fragile sites in Ceboidea, the present data were compared to previous results on Cebus apella paraguayanus (CAP) chromosomes identifying 11 induced fragile sites (2q13, 2q26, 3q31, 5q22, 6q21, 11q15, 12q22, 19q13, 19q22, 20q13 and Xq22) [22,46]. Taking into account the chromosome homologies previously described in SBO, ACA and CAP [43], a homologous c-fra at band Xq22 was observed in all three species. This finding is in agreement with the well-known conservation of the X chromosome [12,43,57,67,68].…”

“…In ACA, a particular sex determination system was observed, resulting from a reciprocal translocation t(7; Y ), but no heterochromatic region or fragile site were observed on these chromosomes. Only c-fra 1q31 from ACA coincided with a breakpoint involved in a pericentric inversion proposed by Mudry et al [43], demonstrating a low coincidence (1/24, 4%) with rearranged sites. Considering the total number of fragile sites identified in each species, no significant correlation was found between heterochromatic regions or structural changes and fragile sites.…”

Genetic Studies of Neotropical Primates at the Extremes of Their Natural Distributions

“…Alouatta caraya: Fundia et al, 2000;Mudry, 1983;Mudry et al, 1992Mudry et al, , 1994Mudry et al, , 1998Aotus azarae: Mudry, 1983;Mudry et al, 1982cMudry et al, , 1990Mudry and Galliari, 1985; Ateles spp. : Nieves, 2003;Nieves et al, 2003Nieves et al, , 2005Callithrix jacchus: Mudry et al, 1981, 1982a, 1990Cebus apella: Fundia et al, 1987;Mantecón et al, 1984;Martinez, 2003;Martinez et al, 2002Martinez et al, , 2004Mudry, 1983Mudry, , 1990Mudry et al, , 1990Mudry and Slavutsky, 1987;Mudry and Vinuesa, 1988;Ponsá Fontanals et al, 1995;and Saimiri boliviensis: Fundia et al, 2000;Mudry et al, 1982bMudry et al, , 1990Slavutsky and Mudry, 1990;Steinberg et al, 2003Steinberg et al, , 2004Steinberg et al, , 2005 …”