Extensive Chromosomal Reorganization in the Evolution of New World Muroid Rodents (Cricetidae, Sigmodontinae): Searching for Ancestral Phylogenetic Traits.

ABSTRACT: Sigmodontinae rodents show great diversity and complexity in morphology and ecology. This diversity is accompanied by extensive chromosome variation challenging attempts to reconstruct their ancestral genome. The species Hylaeamys megacephalus--HME (Oryzomyini, 2n = 54), Necromys lasiurus--NLA (Akodontini, 2n = 34) and Akodon sp.--ASP (Akodontini, 2n = 10) have extreme diploid numbers that make it difficult to understand the rearrangements that are responsible for such differences. In this study we analyzed these changes using whole chromosome probes of HME in cross-species painting of NLA and ASP to construct chromosome homology maps that reveal the rearrangements between species. We include data from the literature for other Sigmodontinae previously studied with probes from HME and Mus m

SUBMITTER: Pereira AL 

PROVIDER: S-EPMC4723050 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature