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Type: Artigo de periódico
Title: Cytogenetic analysis of four central Amazonian species of Colostethus (Anura-Dendrobatidae) with a diploid complement of 22 chromosomes
Author: Veiga-Menoncello, ACP
Lima, AP
Recco-Pimentel, SM
Abstract: Colostethus marchesianus from the type locality and three related species had 2n = 22 chromosomes, which differed from most other Colostethus species that have 2n = 24 chromosomes. The species analyzed were morphologically similar and showed a conservative karyotype, although they could be distinguished from each other by their C-banding pattern. Additional NOR sites, heteromorphism in NOR size and heterochromatin, and an additional rDNA site detected by FISH, were observed. These data suggest that chromosomal rearrangements and hetrochromatin-related events may have contributed to the karyotype differentiation of these Colostethus.
Country: EUA
Editor: Wiley-blackwell
Rights: aberto
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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