Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Chromosomal analysis of Physalaemus kroyeri and Physalaemus cicada (Anura, Leptodactylidae)

Full text
Author(s):
Vittorazzi, Stenio Eder ; Lourenco, Luciana Bolsoni ; Sole, Mirco ; Faria, Renato Gomes ; Recco-Pimentel, Shirlei Maria
Total Authors: 5
Document type: Journal article
Source: COMPARATIVE CYTOGENETICS; v. 10, n. 2, p. 311-323, 2016.
Web of Science Citations: 0
Abstract

All the species of Physalaemus Fitzinger, 1826 karyotyped up until now have been classified as 2n = 22. The species of the P. cuvieri group analyzed by C-banding present a block of heterochromatin in the interstitial region of the short arm of pair 5. Physalaemus cicada Bokermann, 1966 has been considered to be a member of the P. cuvieri species group, although its interspecific phylogenetic relationships remain unknown. The PcP190 satellite DNA has been mapped on the chromosomes of most of the species of the P. cuvieri group. For two species, P. cicada and P. kroyeri (Reinhardt \& Lutken, 1862), however, only the chromosome number and morphology are known. Given this, the objective of the present study was to analyze the chromosomes of P. cicada and P. kroyeri, primarily by C-banding and PcP190 mapping. The results indicate that P. kroyeri and P. cicada have similar karyotypes, which were typical of Physalaemus. In both species, the NORs are located on the long arm of pair 8, and the C-banding indicated that, among other features, P. kroyeri has the interstitial band on chromosome 5, which is however absent in P. cicada. Even so, a number of telomeric bands were observed in P. cicada. The mapping of the PcP190 satellite DNA highlighted areas of the centromeric region of the chromosomes of pair 1 in both species, although in P. kroyeri, heteromorphism was also observed in pair 3. The cytogenetic evidence does not support the inclusion of P. cicada in the P. cuvieri group. In the case of P. kroyeri, the interstitial band on pair 5 is consistent with the existence of a cytogenetic synapomorphy in the P. cuvieri species group. (AU)

FAPESP's process: 10/11300-7 - Chromosomal and DNA sequencing studies in anurans
Grantee:Shirlei Maria Recco-Pimentel
Support Opportunities: Regular Research Grants