Here we report the first record of Drymoreomys albimaculatus Percequillo, Weksler & Costa, (Cricetidae, Sigmodontinae) in Rio de Janeiro state, Brazil. The recently described taxon Drymoreomys albimaculatus is endemic to the Brazilian Atlantic Forest and its biology and genetics are still poorly known. Herein. PDF | Drymoreomys albimaculatus is a recently-described rodent and an Atlantic Forest endemic. It is rare and has a poorly defined geographic.

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Editora da Universidade Estadual de Londrina. Molecular Phylogenetics and Evolution 1: Telomeric sequences are found near the centromeres of the sex chromosomes. Di-Nizo1 Carolina L. It is useful for tracking sequence updates. Please review our privacy policy. Drymoreomys Percequillo, Weksler, and Costa, Species of tribe Oryzomyini rice rats. Nucleotide sequencing was conducted using BigDye Terminator v3.

The coronoid processthe frontmost of the three main processes projections at the back of the jawbone, is large and about as high as the condyloid process behind it. Drymoreomys albimaculatus Percequillo, Weksler, and Costa, Select a section on the left to see content.

Outgroups include Peromyscus maniculatus Neotominae ; Nyctomys sumichrasti TylomyinaeDelomys sublineatus SigmodontinaeThomasomys baeops Sigmodontinaeand Wiedomys pyrrhorhinos Sigmodontinae. Branch support was estimated by Bayesian posterior probabilities BPP. FISH detected telomeric signals at the ends of all chromosomes and additional telomeric sequences were found in the pericentromeric region of both X and Y chromosomes Fig.


Two simultaneous analyses were performed to ensure convergence on topologies. Distribution extension of Phaenomys ferrugineus Thomas,and new data on Abrawayaomys ruschii Cunha and Cruz, and Rhagomys rufescens Thomas,three rare species of rodents Rodentia: Your basket is currently albmaculatus.

The crests on the braincase and interorbital region are weakly developed.

Drymoreomys – Wikipedia

The interorbital region between the eyes is narrow and long, with the narrowest part towards the front. Articles from ZooKeys are provided here courtesy of Albimqculatus Publishers.

Karyologic diversification and phylogenetic relationships of the genus Thalpomys Rodentia, Sigmodontinae. Metaphases were obtained in vivo from spleen and bone marrow, according to Ford and Hamerton with modifications.

Our analyses also recovered Drymoreomys albimaculatus as the sister species of Eremoryzomys polius and both species diverged early in the clade D Fig.

According to those analyses, Percequillo et al.

New record of Rhagomys rufescens Thomas Rodentia: Mitotic plates were digitally captured with visible light or blue and green filters emission at and nm, respectively in an Axioskop 40 epifluorescence microscope Carl Zeiss equipped with an Axiocam camera and AxionVision software. Oryzomyiniwith comments on oryzomyine biogeography.

Drymoreomys albimaculatus – Wikipédia, a enciclopédia livre

Zoological Journal of the Linnean Society Cricetidae from the Atlantic forest of southeastern Brazil. The two lateral albimaculatu are not supported by mounds of the baculum penis bone. The m1, m2, and usually m3 have a mesolophida crest corresponding to the mesoloph but located on the lingual side. Oryzomyini Mammals of Brazil Mammals described in Monotypic rodent genera.


The Atlantic Forest harbors a high diversity of mammals, 20 percent of which are rodents of the subfamily Sigmodontinae Ribeiro et al. Biological Journal of the Linnean Society By using drymoremoys site, you agree to the Terms of Use and Privacy Policy. Experimental Cell Research Collection localities of Drymoreomys albimaculatus.

In this sense, tandem fusions have perhaps played significant role in clade D, resulting in the lower diploid numbers. Drymoreomys is a rodent genus in the tribe Oryzomyini that lives in the Atlantic Forest of Brazil.

Interphotoreceptor retinoid binding protein

Thus, some external morphological traits were similar to those described for Rhipidomys and Oecomys as reported Percequillo et al. The bony palate is broad albjmaculatus short, with the posterior margin between the third molars Drymoreomus. For instance, a superficial morphological comparison among sex chromosomes from Table 1 could suggest the occurrence of pericentric inversions, or whole-arm heterochromatin additions or deletions. It is one of several tribes recognized within the subfamily Sigmodontinaewhich encompasses hundreds of species found across South America and into southern North America.

The anteroconidthe front cusp on the m1, is divided in two.