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Type: Artigo de periódico
Title: Cytogenetic analysis of three Physalaemus species (Amphibia, Anura)
Author: do Amaral, MJLV
Cardoso, AJ
Recco-Pimentel, SM
Abstract: Physalaemus biligonigerus, P. fuscomaculatus and P. sp. have 2n=22 chromosomes, consistent with the number of chromosomal pairs found in the genus. There were no substantial differences in the karyotypes of the three species, except for chromosome 3 which was submetacentric in P. fuscomaculatus and metacentric in P. biligonigerus and P. sp. All chromosomes were characterised by the presence of a C-band in the pericentromeric region. Some interstitial bands were also detected at the same position in all karyotypes, but the band located on the short arm of chromosome 3 was larger in P. biligonigerus and P. sp. than in P. fuscomaculatus. Also, only P. sp. had a large block of pericentromeric heterochromatin in the short arm of chromosome 9 and another one in the telomeric band on the long arm. The NOR was located on the long arm of chromosome 9 in the three species. These findings confirmed that the three species are indeed closely related cytogenetically.
Subject: Ag-NOR
Physalaemus biligonigerus
Physalaemus fuscomaculatus
Physalaemus sp.
Country: Itália
Editor: Univ Florence Botany Inst
Rights: fechado
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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