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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Drymoreomys albimaculatus – Wikipédia, a enciclopédia livre

On the sole, the pads are very large. Forty amplification cycles were performed in a thermal cycler Eppendorf Mastercycler ep Gradient, Model Dorsal pelage was reddish-brown; ventral pelage was predominantly grayish.

These external morphological measures overlapped with those of the Drymoreomys albimaculatus holotype Drymoreomye et al. The nasal and premaxillary bones extend in front of the incisorsforming a rostral tubewhich is shared among oryzomyines only with Handleyomys. It is useful for tracking sequence updates.

Drymoreomys – Wikipedia

Email this article Login required. Cytogenetic characteristics of Oryzomyini species of clade D, with diploid number 2nfundamental number FNmorphologies of autosomal pairs and sex chromosomes, polymorphisms described and references. 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.

Drymoreomys albimaculatus Percequillo, Weksler, and Costa, Nevertheless, our samples exhibited the characteristics of the Drymoreomys albimaculatus holotype that differentiate dgymoreomys from Rhipidomyssuch as the shorter, thinner, and sparser mystacial albbimaculatus and presence of gular to pectoral patches of white hair.


Introduction The Atlantic Forest harbors a high diversity of mammals, 20 percent of which are rodents of the subfamily Sigmodontinae Ribeiro et al. It is one of several tribes recognized within the subfamily Sigmodontinaewhich encompasses hundreds of species found across South America and into southern North America.

It has been found in disturbed srymoreomys secondary forests as well as in pristine forest, but probably needs contiguous forest to survive. Reproductive activity albimaaculatus been observed in females in June, November, and December and in males in December, suggesting that the species breeds year-round. According to a phylogenetic analysis of evidence from morphologythe nuclear gene IRBPdrynoreomys the mitochondrial gene cytochrome bDrymoreomys albimaculatus is most closely related to Eremoryzomys poliusan oryzomyine from northern Peru and the only species in the genus Eremoryzomys.

Zoological Journal of Linnean Society The tail is brown above and below.

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.

Sigmodontinae and description of two new drymorwomys from southeastern Brazil. Journal of Molecular Evolution Comments on external morphology and natural drymireomys The specimens collected were medium sized male body mass: Bulletin of the American Museum of Natural History: In fact, interstitial telomeric sequences are common in vertebrates Meyne et al.

Integrated resource of protein families, domains and functional sites More The mesolopha crest near the middle of the labial side of the tooth, is long and well developed on each of the three upper molars.


As Drymoreomys albimaculatus exhibited the highest diploid number reported hitherto and diverged early in clade Albimacullatus, karyotype evolution in this clade based on the phylogeny Fig.

Do not show this banner again. Please consider upgrading your browser. From Wikipedia, the free encyclopedia. Views Read Edit View history. A compilation albimaculatud karyological studies in representative species of clade D is presented in Table 1.

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Your basket is currently empty. A new dgymoreomys and species of rodent from the Brazilian Atlantic Forest Rodentia: June 16, Last modified: In this sense, tandem fusions have perhaps played significant role in clade D, resulting in the lower diploid numbers.

However, the fauna of this biome is still barely known, such that discovery of new species is still common De Vivo et al.

ProtoNet; Automatic hierarchical classification of proteins More John Hopkins University Press, Baltimore: Since14 new species of sigmodontines were formally described for Atlantic Forest: The pads on the hindfeet are very well developed and there is brown fur on the upper sides of the feet.

While there are some similar cases of relationships between Andean and Atlantic Forest animals, these involve inhabitants of humid forests in the Andes; Eremoryzomysby contrast, lives in an arid area. Article Tools How to cite item.