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Type: Artigo
Title: Comparative cytogenetics of Physalaemus albifronsandPhysalaemus cuvierispecies groups (Anura, Leptodactylidae)
Author: Vittorazzi, Stenio Eder
Quinderé, Yeda Rumi Serra Douglas
|Recco-Pimentel, Shirlei Maria
Tomatis, Cristian
Baldo, Diego
Lima, Janaina Reis Ferreira
Ferro, Juan Martín
Lima, Jucivaldo Dias
Lourenço, Luciana Bolsoni
Abstract: Recently, Physalaemus albifrons (Spix, 1824) was relocated from the Physalaemus cuvieri group to the same group as Physalaemus biligonigerus (Cope, 1861), Physalaemus marmoratus (Reinhardt & Lütken, 1862) and Physalaemus santafecinus Barrio, 1965. To contribute to the analysis of this proposition, we studied the karyotypes of Physalaemus albifrons, Physalaemus santafecinus and three species of the Physalaemus cuvieri group. The karyotype of Physalaemus santafecinus was found to be very similar to those of Physalaemus biligonigerus and Physalaemus marmoratus, which were previously described. A remarkable characteristic that these three species share is a conspicuous C-band that extends from the pericentromeric region almost to the telomere in the short arm of chromosome 3. This characteristic is not present in the Physalaemus albifrons karyotype and could be a synapomorphy of Physalaemus biligonigerus, Physalaemus marmoratus and Physalaemus santafecinus. The karyotype of Physalaemus santafecinus is also similar to those of Physalaemus marmoratus and Physalaemus biligonigerus owing to the presence of several terminal C-bands and the distal localization of the NOR in a small metacentric chromosome. In contrast, the Physalaemus albifrons karyotype has no terminal C-bands and its NOR is located interstitially in the long arm of submetacentric chromosome 8. The NOR-bearing chromosome of Physalaemus albifrons very closely resembles those found in Physalaemus albonotatus (Steindachner, 1864), Physalaemus cuqui Lobo, 1993 and some populations of Physalaemus cuvieri Fitzinger, 1826. Additionally, the Physalaemus albifrons karyotype has an interstitial C-band in chromosome 5 that has been exclusively observed in species of the Physalaemus cuvieri group. Therefore, we were not able to identify any chromosomal feature that supports the reallocation of Physalaemus albifrons.
Recently, Physalaemus albifrons(Spix, 1824) was relocated from thePhysalaemus cuvierigroup to the same group asPhysalaemus biligonigerus(Cope, 1861),Physalaemus marmoratus(Reinhardt & Lütken, 1862) andPhysalaemus santafecinusBarrio, 1965. To contribute to
Subject: Cromossomos
Região organizadora do nucléolo
Bandeamento cromossômico
Country: Bulgária
Editor: Pensoft
Citation: Comparative Cytogenetics. v. 8, n. 2, p. 103-23, 2014.
Rights: aberto
Identifier DOI: 10.3897/CompCytogen.v8i2.6414
Date Issue: 2014
Appears in Collections:IB - Artigos e Outros Documentos

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