Results 11 to 20 of about 5,690 (270)

The emergence of a new sex-system (XX/XY1Y2) suggests a species complex in the “monotypic” rodent Oecomys auyantepui (Rodentia, Sigmodontinae) [PDF]

Scientific Reports, 2022
X-autosome translocation (XY1Y2) has been reported in distinct groups of vertebrates suggesting that the rise of a multiple sex system within a species may act as a reproductive barrier and lead to speciation. The viability of this system has been linked
Willam Oliveira da Silva, Celina Coelho Rosa, Malcolm Andrew Ferguson-Smith, Patricia Caroline Mary O’Brien, Juliane Saldanha, Rogério Vieira Rossi, Julio Cesar Pieczarka, Cleusa Yoshiko Nagamachi   +7 more
doaj   +3 more sources

Rodentolepis microstoma isolated from different species of Sigmodontinae rodents (Rodentia: Cricetidae) in the Cuenca del Plata, Argentina: Morphological aspects and molecular characterization [PDF]

International Journal for Parasitology: Parasites and Wildlife, 2022
The purpose of this paper was to study specimens of the genus Rodentolepis isolated from eight species of Sigmodontinae rodents (Rodentia: Cricetidae) from six provinces in the Cuenca del Plata, Argentina, based on morphological, morphometric and ...
Natalia Beatriz Guerreiro Martins, María del Rosario Robles, Marcelo Knoff, Graciela Teresa Navone, Rocío Callejón   +4 more
doaj   +3 more sources

Ten New Genera of Oryzomyine Rodents (Cricetidae: Sigmodontinae) [PDF]

American Museum Novitates, 2006
Abstract In order to achieve a monophyletic classification of oryzomyine rodents, 10 new genera are described for species or species groups previously referred to the polyphyletic genus Oryzomys. The following names are proposed: Aegialomys, n.gen. (for the “xanthaeolus group” of authors); Cerradomys, n.gen. (for the “subflavus group”); Eremoryzomys, n.
Marcelo Weksler, Alexandre Reis Percequillo, Robert S. Voss   +2 more
openalex   +6 more sources

PHYLOGEOGRAPHY OF OLIGORYZOMYS LONGICAUDATUS (RODENTIA: SIGMODONTINAE) IN TEMPERATE SOUTH AMERICA [PDF]

Journal of Mammalogy, 2005
Abstract Phylogeographic relationships were evaluated at the intraspecific level using nucleotide sequence data from the mitochondrial cytochrome b gene of representative specimens of “colilargo” (Oligoryzomys longicaudatus) from 31 localities, along its distributional range over a large part of the western Andes and southern Argentina.
R. Eduardo Palma, Eric Rivera‐Milla, Jorge Salazar‐Bravo, Fernando Torres‐Pérez, Ulyses F. J. Pardiñas, Pablo A. Marquet, Ángel E. Spotorno, Andrés Meynard, Terry L. Yates   +8 more
openalex   +7 more sources

Chromosomal rearrangements played an important role in the speciation of rice rats of genus Cerradomys (Rodentia, Sigmodontinae, Oryzomyini) [PDF]

Sci Rep
Rodents of the genus Cerradomys belong to tribe Oryzomyini, one of the most diverse and speciose groups in Sigmodontinae (Rodentia, Cricetidae). The speciation process in Cerradomys is associated with chromosomal rearrangements and biogeographic dynamics
Willam Oliveira da Silva, S. Malcher, M. Ferguson-Smith, P. O'Brien, R. Rossi, L. Geise, J. Pieczarka, C. Nagamachi   +7 more
semanticscholar   +2 more sources

Chromosomal diversity and molecular divergence among three undescribed species of Neacomys (Rodentia, Sigmodontinae) separated by Amazonian rivers [PDF]

PLoS ONE, 2017
The Neacomys genus (Rodentia, Sigmodontinae) is distributed in the Amazon region, with some species limited to a single endemic area, while others may occur more widely.
Willam Oliveira Da Silva, Julio Cesar Pieczarka, Ana Cristina Mendes-oliveira   +2 more
exaly   +2 more sources

Systematics and diversification of the Ichthyomyini (Cricetidae, Sigmodontinae) revisited: evidence from molecular, morphological, and combined approaches [PDF]

PeerJ, 2023
Ichthyomyini, a morphologically distinctive group of Neotropical cricetid rodents, lacks an integrative study of its systematics and biogeography. Since this tribe is a crucial element of the Sigmodontinae, the most speciose subfamily of the Cricetidae ...
J. Salazar-Bravo, Nicolás Tinoco, H. Zeballos, J. Brito, Daniela Arenas-Viveros, David Marín-C, J. Ramírez-Fernández, A. Percequillo, Thomas E. Lee, S. Solari, Javier E Colmenares-Pinzón, Carlos Nivelo, Bernal Rodríguez Herrera, William Merino, César E. Medina, Oscar E. Murillo-García, Ulyses E J. Pardinas   +16 more
semanticscholar   +2 more sources

A New Species of Heligmonellidae (Nematoda) in Euryoryzomys russatus (Rodentia: Sigmodontinae) in the Atlantic Forest of Northeast Brazil [PDF]

Acta Parasitol
Background The genus Stilestrongylus (Freitas, Lent, and Almeida, 1937) is defined by having 24 or more subequal cuticular ridges, an asymmetrical caudal bursa, and a hypertrophied genital cone.
N. A. Costa, R. Gentile, Martin R Alvarez, A. Maldonado Júnior   +3 more
semanticscholar   +2 more sources

Hassalstrongylus dollfusi (Nematoda, Heligmonellidae): rediscovery in native South American rodents, six decades after its description [PDF]

Parasite, 2021
Hassalstrongylus dollfusi (Díaz-Ungría, 1963) Durette-Desset, 1971 was described in a wild house mouse, Mus musculus, from Venezuela and, since then, has never been reported again in the type host or in any other host.
Serrano Paula Carolina, Digiani María Celina, Gómez-Muñoz María de los Angeles, Notarnicola Juliana, Robles María del Rosario, Navone Graciela Teresa   +5 more
doaj   +2 more sources

Comparative genomic mapping reveals mechanisms of chromosome diversification in Rhipidomys species (Rodentia, Thomasomyini) and syntenic relationship between species of Sigmodontinae. [PDF]

PLoS ONE, 2021
Rhipidomys (Sigmodontinae, Thomasomyini) has 25 recognized species, with a wide distribution ranging from eastern Panama to northern Argentina. Cytogenetic data has been described for 13 species with 12 of them having 2n = 44 with a high level of ...
Vergiana Dos Santos Paixão, Pablo Suárez, Willam Oliveira da Silva, Lena Geise, Malcolm Andrew Ferguson-Smith, Patricia Caroline Mary O'Brien, Ana Cristina Mendes-Oliveira, Rogério Vieira Rossi, Julio Cesar Pieczarka, Cleusa Yoshiko Nagamachi   +9 more
doaj   +2 more sources