Citogenética comparativa do gênero Engystomops= uma abordagem clássica e molecular= Comparative cytogenetics of the genus Engystomops: classical and molecular approaches

Abstract:

Of the species in the genus Engystomops, only three species of the Edentulus clade (E. freibergi, E. petersi and E. pustulosus) and two species of the Duovox clade (E. pustulatus and E. puyango) have had their diploid number described, while the NOR (nucleolus organizer region) and the heterochromatic sites were known only for E. freibergi, E. petersi and E. puyango karyotypes. The species of Duovox clade had 2n= 20, while the diploid chromosome number of all species of Edentulus clade was 2n= 22, which is the same diploid number of species of Physalaemus and Edalohina, genera closely related to Engystomops. Thus, the diploid number reduction from 2n= 22 to 2n= 20 was supposed, but it was not possible to infer if this was a synapomorphy of E. puyango and E. pustulatus or a synapomorphy of the entire Duovox clade. With regards to the Edentulus clade, some doubts also persisted. Recent studies …

Año de publicación:

2018

Keywords:

Fuente:

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