Results 241 to 250 of about 5,690 (270)

Karyotypic Reshuffling in the Genus Rhipidomys (Rodentia: Cricetidae: Sigmodontinae) Revealed by Zoo-FISH

Cytogenetic and Genome Research
Introduction: Rhipidomys is the second most specious and the most widespread genus of the tribe Thomasomyini. Chromosomal data have been an important tool in the taxonomy of the group that presents low variability of diploid number (2n) and highly ...
C. N. Moreira, F. G. Pricoli, M. Ferguson-Smith, Y. Yonenaga-Yassuda, K. Ventura   +4 more
semanticscholar   +1 more source

A new species of Moniliformis from a Sigmodontinae rodent in Patagonia (Argentina)

Parasitology Research, 2017
The majority of species of Acanthocephala known thus far from South America have been recorded mostly in fish and wild birds. In particular, rodents in Argentina have been poorly studied for acanthocephalans. The genus Abrothrix (Sigmodontinae-Cricetidae) ranges from the Altiplano of southern Peru through the highlands of Bolivia, northern Chile, and ...
Guerreiro Martins, Natalia Beatriz, Robles, Maria del Rosario, Navone, Graciela Teresa   +2 more
openaire   +4 more sources

Karyologic diversification and phylogenetic relationships of the genusThalpomys (Rodentia, Sigmodontinae)

Acta Theriologica, 2004
We describe the karyotype ofThalpomys species, from different Brazilian localities of the Cerrado.Thalpomys cerradensis Herskovitz, 1990 showed 2n=36, FN=34 andT. lasiotis Thomas, 1916 2n=38, FN=38. Comparisons of G-band karyotypes showed evident inter-specific homologies indicating that their chromosome complements could be derived from one another by
Ana F. B. de Andrade, Ana F. B. de Andrade, Sanae Kasahara, Cibele R. Bonvicino, Denis C. Briani   +4 more
openaire   +3 more sources

On the Sigmodontinae radiation (Rodentia, Cricetidae): An appraisal of the phylogenetic position of Rhagomys

Molecular Phylogenetics and Evolution, 2006
a Seccion Evolucion, Facultad de Ciencias, Universidad de la Republica, Igua 4225, Montevideo 11400, Uruguay b Departamento de Zoologia, Casilla 160-C, Universidad de Concepcion, Concepcion, Chile c The University of Michigan Museum of Zoology, 1109 Geddes, Ann Arbor, MI 48109, USA d Museo Nacional de Historia Natural, Casilla de Correo 399, Montevideo
Bruce D. Patterson, Lucia Luna, Guillermo D’Elía, Enrique M. González   +3 more
openaire   +3 more sources

Allometric Relations of Neotropical Small Rodents (Sigmodontinae) in Anthropogenic Environments

Zoological Science, 2013
The present study aims at assessing allometric relationships in the Sigmodontinae rodents (Calomys tener, Akodon cf. montensis, Necromys lasiurus, Oligoryzomys flavescens, and Oligoryzomys nigripes), and morphological variation among different habitats in human-dominated environments in Southeastern Brazil.
Luciano Martins Verdade, Paula C. Lopes, Carla Gheler-Costa, Paula S. Martin, Luís Miguel Rosalino, Luís Miguel Rosalino   +5 more
openaire   +3 more sources

Description of a New Genus and Species of Semi-Aquatic Rodent (Cricetidae, Sigmodontinae, Ichthyomyini) from the Southern Peruvian Andes

Diversity
We describe a new genus and species of the tribe Ichthyomyini (Rodentia: Sigmodontinae) based on three specimens collected in Machupicchu, Cusco, in the southern Peruvian Andes.
H. Zeballos, Alexánder Pari, César E. Medina, Kateryn Pino, Sandra Arias, Alayda L. Arce, Fiorella N. Gonzales   +6 more
semanticscholar   +1 more source

A new species of Calomys (Rodentia: Sigmodontinae) from Eastern Brazil

Zootaxa, 2010
On the basis of combined analyses of karyotypic, molecular and morphologic data, we herein describe a new Calomys species collected in a transitional area between the Atlantic Forest and the Cerrado morphoclimatic domains of eastern Brazil. This new taxon differs from all other Brazilian Calomys species by its diploid number (2n=38), the lowest among ...
Rosana Gentile, Cibele R. Bonvicino, João Alves de Oliveira   +2 more
openaire   +3 more sources

Systematics of the Enigmatic Neotropical Rodent Genus Microakodontomys (Cricetidae: Sigmodontinae): New Evidence Supporting Its Distinctiveness and Endangered Status

Zoologica Scripta
The diversification of Neotropical sigmodontine rodents represents one of the most remarkable evolutionary events among mammals, encompassing numerous endemic, rare, and endangered genera and species.
M. Weksler, João V. C. Lourenço, A. C. Lessinger, R. Paresque, A. P. Carmignotto   +4 more
semanticscholar   +1 more source

Characterization of repetitive DNA on the genome of the marsh rat Holochilus nanus (Cricetidae: Sigmodontinae)

Zeitschrift für Induktive Abstammungs- und Vererbungslehre, 2023
Camila do Nascimento Moreira, A. L. Cardoso, M. Valeri, K. Ventura, M. Ferguson-Smith, Y. Yonenaga-Yassuda, M. Svartman, C. Martins   +7 more
semanticscholar   +1 more source

Range extension of the endangered rodent Rhipidomys tribei (Cricetidae: Sigmodontinae) in Southeastern Brazil

Zoologia (Curitiba)
The arboreal rodent Rhipidomys tribei Costa, Geise, Pereira & Costa, 2011, which is endemic to Southeast Brazil, is a sparsely documented species, with only five confirmed published records, mainly in the mountainous areas of the Atlantic Forest and the ...
R. Vilela, Maria C. S. Ribeiro, R. O. Lanes, Bernardo R. Teixeira, Tatiana P. T. de Freitas, M. Weksler, C. Bonvicino   +6 more
semanticscholar   +1 more source