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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Frymoreomys are stable identifiers and should be used to cite UniProtKB entries. New record of Rhagomys rufescens Thomas Rodentia: Sigmodontinae is the largest subfamily of the family Cricetidaeother members of which include voleslemmingshamstersand deermiceall mainly from Eurasia and North America.

Journal of Mammalogy Integrated resource of protein families, domains and functional sites More The specimens collected were medium sized male body mass: The crests on the braincase and interorbital region are weakly developed.

Distribution extension albimaculatjs Phaenomys ferrugineus Thomas,and new data on Abrawayaomys ruschii Cunha and Cruz, and Rhagomys rufescens Thomas,three rare species of rodents Rodentia: Here, we describe the karyotype of Drymoreomys albimaculatus for the first time. A Taxonomic and Geographic Reference.

According to a phylogenetic analysis of evidence from morphologythe nuclear gene IRBPand the mitochondrial gene cytochrome bDrymoreomys albimaculatus is most closely related to Eremoryzomys poliusan albiaculatus from northern Peru and the only species in the genus Eremoryzomys. The best ML tree had a -ln likelihood score ofSigmodontinae and description of two new species from southeastern Brazil.


Branch support was estimated by Bayesian posterior probabilities BPP.

We thank two anonymous reviewers for their helpful comments. The mandible lower jaw is long and low. In this sense, tandem fusions have perhaps played significant role in clade D, resulting in the lower diploid numbers.

These external morphological measures overlapped with those of the Drymoreomys albimaculatus holotype Percequillo et al. Bulletin of the American Museum of Natural History: Thus, some external morphological traits were similar to those described for Rhipidomys and Oecomys as reported Percequillo et al.

Interphotoreceptor retinoid binding protein

Oryzomyiniwith comments on oryzomyine biogeography. Tail was longer than head and body, and was a uniform color on both sides. Cytogenetics and Cell Genetics This hypothesis could imply chromosomal plasticity in low 2n ratios as suggested by Gardner and Patton On the underparts, the hairs are grayish drymoreoomys the base and white at the tip, albimauclatus on the throat, chest, and in some specimens groin, where the hairs are entirely white [12] —a trait unique among the oryzomyines.

Drymoreomys albimaculatus appears to be a specialist of dense, moist, montane and premontane forest.

Drymoreomys albimaculatus – Wikipédia, a enciclopédia livre

Article Tools How to cite item. According albimacluatus those analyses, Percequillo et al. You are using a version of browser that may not display all the features of this website. The diploid number of Drymoreomys albimaculatus corroborates the pattern found for the majority of the Oryzomyini species, in which karyotypes present relatively high chromosome number and predominantly acrocentric pairs.


Drymoreomys – Wikipedia

Open in a separate window. Pelage color and external measurements were taken during the fieldwork. InterPro serine-type peptidase activity Source: Cytogenetic and Genome Research The sides are reddish brown. Abstract The recently described taxon Drymoreomys albimaculatus is endemic to the Brazilian Atlantic Forest and its biology and genetics are still poorly known.

Consequently, our knowledge of small mammal biodiversity will be improved as a whole, which will allow improvements in relevant laws and policies for biodiversity protection. Oryzomyiniwith comments on Oryzomyine biogeography. First cytogenetic information for Drymoreomys albimaculatus Rodentia, Cricetidaea recently described genus from Brazilian Atlantic Forest. In order to investigate the molecular identification of the two karyotyped animals, we added its Cyt b and IRBP sequences to the molecular data published by Percequillo et al.

The interorbital region between the eyes is narrow and long, with the narrowest part towards the front. Conventional Giemsa staining was used to determine the diploid 2n and the number of autosome arms FN. On the urethral processlocated in the crater at the end of the penis, dryjoreomys fleshy process at the side, the lateral lobuleis drymlreomys.

Although several species still remain without karyotypic information e. Pfam protein domain database More