Chromosome evolution in three Brazilian Leptodactylus species (Anura, Leptodactylidae), with phylogenetic considerations

Cruz Campos, Joao Reinaldo [UNESP]; Ananias, Fernando; Brasileiro, Cinthia Aguirre; Yamamoto, Marcos; Baptista Haddad, Celio Fernando [UNESP]; Kasahara, Sanae [UNESP]

Chromosome evolution in three Brazilian Leptodactylus species (Anura, Leptodactylidae), with phylogenetic considerations

Arquivos

WOS000266111700008.pdf (291.12 KB)

Data

2009-05-01

Autores

Cruz Campos, Joao Reinaldo

Ananias, Fernando

Brasileiro, Cinthia Aguirre

Yamamoto, Marcos

Baptista Haddad, Celio Fernando

Kasahara, Sanae

Editor

Wiley-Blackwell Publishing, Inc

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

Karyotypic analyses on three species of the Leptodactylus from Brazil showed 2n=24 in L. cf. marmoratus, 2n=23 in Leptodactylus sp. (aff. bokermanni), and 2n=26 in L. hylaedactylus, with distinct numbers of bi and uni-armed chromosomes. Leptodactylus cf. marmoratus presented a variation as regard to the morphology of pair 12. All specimens of L. cf. marmoratus had Ag-NOR in pair 6, confirmed by FISH, but the sample from one of the localities presented additional Ag-NOR, in one of the chromosomes 8. In Leptodactylus sp. (aff. bokermanni) and L. hylaedactylus the chromosome pairs bearing Ag-NOR are 11 and 7, respectively. The C banding patterns are predominantly centromeric, but only in L. marmoratus this heterochromatin appeared very brilliant with DAPI. on the other hand, bright labelling was noticed with CMA(3) in the three species, on the Ag-NOR site. The data obtained here are in accordance with the proposed phylogeny to the genus, and the chromosomal analyses in these Leptodactylus showed that the karyotype evolution was based mainly in centric fusion and pericentric inversion.