| first cytogenetic information for drymoreomys albimaculatus (rodentia, cricetidae), a recently described genus from brazilian atlantic forest. | the recently described taxon drymoreomys albimaculatus is endemic to the brazilian atlantic forest and its biology and genetics are still poorly known. herein, we present, for the first time, the karyotype of the species using classical and molecular cytogenetics, which showed 2n=62, fn=62, and interstitial telomeric signals at the sex chromosomes. nuclear and mitochondrial dna sequences from the two karyotyped individuals verify the taxonomic identity as the recently described drymoreomys albim ... | 2013 | 23794904 |
| on the origin and evolution of the extant system of b chromosomes in oryzomyini radiation (rodentia, sigmodontinae). | heterogeneous supernumerary chromosomes (bs) are recognized in the oryzomyines holochilus brasiliensis, nectomys rattus, n. squamipes, oligoryzomys flavescens and sooretamys angouya, representing about 10% of all known b-containing rodent species. they provide an outstanding model for understanding the origin, evolution and diversity of bs in a phylogenetic context. therefore, whole chromosome-specific probes were generated from flow-sorted holochilus brasiliensis (hbr) autosomes 11 and 25+26 an ... | 2015 | 26305702 |