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C and AgAs bands of the octaploid untanha frog Ceratophrys dorsata (C. aurita) (8n = 104, Amphibia, Anura)

Marta Dias Soares-Scott; Isa Trajtengertz; Mithitaka Soma; Maria Luiza Beçak

Serviço de Genética, Instituto Butantan, São Paulo, SP, Brasil. Send correspondence to M.D.S.-S.

ABSTRACT

Ceratophrys aurita (C. dorsata), a rare octaploid species of Brazilian anuran (8n = 104), has 9 NORs distributed among distinct chromosome groups (6 and 11) with centromeric and telomeric C bands, as analyzed in one male.
This species also presents interpopulational variability of DNA content. The NOR banding pattern shows the occurrence of interspecific polymorphism as compared to C. orna ta. The number and distribution of NORs, as well as the variability in DNA content are caused by postploidy rearrangements.

Keywords: AgAs; bands; octaploid; untanha; frog; Ceratophrys dorsata.

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