Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/101617
Type: Artigo de periódico
Title: Cytogenetic Analysis Of Four Poison Frogs Of The Epipedobates Genus (anura: Dendrobatidae)
Author: Aguiar Jr. O.
Lima A.P.
Giaretta A.A.
Recco-Pimentel S.M.
Abstract: We determined the overall karyotypic structure, positions of NORs, as well as the distribution of constitutive heterochromatin for Epipedobates flavopictus, E. trivittatus, E. femoralis, and E. hahneli. Despite a conserved chromosome number (2N = 24), morphological differences were seen in the group of small chromosomes. Epipedobates femoralis presented a distinctive karyotype compared to the other species analyzed. All species examined had NORs on different chromosomes. The C-banding pattern showed a considerable variation among the species. Epipedobates flavopictus is remarkably different from the others in possessing only centromeric C-bands. The distribution of heterochromatin varied among species and seems to evolve as a species-specific trait. We suggest that NOR location variability indicates that some rearrangement mechanisms have taken place during the evolutionary history of this group, because Dendrobatidae is considered a monophyletic taxon. We do not discard that some general pattern in either C-band or NOR location, or both, may emerge when more species of this genus are analyzed.
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Rights: aberto
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0036347623&partnerID=40&md5=99397bac0b18a8767a7ada909b0f18ca
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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