Repository logo

Hybridization between subterranean tuco-tucos (Rodentia, Ctenomyidae) with contrasting phylogenetic positions.

Published version



Change log


Kubiak, Bruno Busnello  ORCID logo
Leipnitz, Leonardo Trindade 
de Almeida, Thamara Santos 


Reproductive compatibility usually decreases according to increasing genetic difference and the time of divergence between species. However, the amount of modification required to influence hybridization may vary in different species. Thus, it is extremely important to conduct studies that seek to understand what and how variables influence the reproductive isolation of species. We have explored a system involving two species of subterranean rodents that present morphological, karyotypic, and evolutionary history differences and are capable of generating hybrids. To gain insight into the karyotype organization of genus Ctenomys, we examined the chromosome evolution by classical and molecular cytogenetics of both parental species and hybrids. Furthermore, we have used different approaches to analyze the differences between the parental species and the hybrids, and determined the origin of the hybrids. The results of our work demonstrate unequivocally that some species that present extensive differences in chromosome organization, phenotype, evolutionary history, sperm morphology and genetic, which are usually associated with reproductive isolation, can generate natural hybrids. The results also demonstrate that females of both species are able to generate hybrids with males of the other species. In addition, the chromosome-specific probes prepared from Ctenomys flamarioni provide an invaluable tool for comparative cytogenetics in closely related species.



Animals, Chromosome Painting, Cytogenetic Analysis, DNA, Mitochondrial, Female, Genetic Speciation, Hybridization, Genetic, Karyotyping, Male, Microsatellite Repeats, Phylogeny, Reproductive Isolation, Rodentia, Skull, Species Specificity

Journal Title

Sci Rep

Conference Name

Journal ISSN


Volume Title



Springer Science and Business Media LLC