RBG banding resulting in multiple, clear DNA replication bands was obtained on the chromosomes of Tropidurus montanus (2n = 36) and T. torquatus (2n = 36) after fibroblast culture and BrdU incorporation. High-resolution RBG-banding patterns of prometaphase chromosomes are presented.

Cytogenetic studies were performed on three species of eyelidless microteiids, Procellosaurinus erythrocerus, P. tetradactylus, and Vanzosaura rubricauda (Squamata, Gymnophthalmidae), all with a diploid number of 2n = 40. The specimens were collected in the palaeoquartenary dune fields of the middle Rio São Francisco in the State of Bahia, Brazil. Chromosomes from fibroblast cultures were studied after routine Giemsa staining, CBG- and RBG-banding, and Ag-NOR staining. Despite similarities in chromosome number and morphology, each species can be differentiated by the position and amount of C-heterochromatin. Our cytogenetic and DNA content data indicate that there are more similarities between the two species of Procellosaurinus than exist between either species and V. rubricauda, reinforcing the importance of banding techniques for the characterization of reptilian species.

(1992) Chromosomal characterization and comparative cytogenetic analysis of two species of Proechimys (Echimyidae, Rodentia) from the Caatinga domain of the State of Bahia, Brazil, Caryologia, 45:2, 197-212, DOI: 10.1080/00087114.1992 To link to this article: https://doi.org/10.1080/00087114.1992.10797223 Vol. 45, n. 2: 197-212, 1992 Chromosomal characterization and comparative cytogenetic analysis of two species of Proechimys (Echimyidae, Rodentia) from the Caatinga domain of the State of Bahia, Brazil