Results 71 to 80 of about 2,933 (233)

A new species of Sigmodontinae (Rodentia) from the late Hemphillian of central Mexico, and comments on the possible radiation of this group

Revista Mexicana de Ciencias Geológicas, 2019
The Sigmodontinae subfamily represents one of the most diverse groups of mammals in the world; this rodent group evolved in the open and arid ecosystems of the Miocene of North America and was the most successful legion of mammals in the Great American ...
Adolfo Pacheco-Castro, Oscar Carranza-Castañeda, Eduardo Jiménez-Hidalgo   +2 more
doaj   +1 more source

Mammalia, Rodentia, Sigmodontinae, Holochilus brasiliensis (Desmarest, 1819): distribution extention [PDF]

Check List, 2010
We report the southernmost record for the marsh rats Holochilus brasiliensis 20 km S of Pedro Luro on Hwy 3, province of Buenos Aires, Argentina (39°41’31.13”S, 62°40’23.5”W) extending the range of the species ca. 110 km S. This represents the first contemporaneous record of H. brasiliensis in Patagonia, and also the only species of sigmodontine rodent
Formoso, A. E., Sauthier, D. E. U., Pardiñas, U. F. J.   +2 more
openaire   +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
openaire   +1 more source

New records of the red-rumped mouse Juliomys pictipes (Osgood, 1933) (Rodentia: Sigmodontinae) in coastal Atlantic Forest of Paraná, southern Brazil

Biotemas, 2013
Juliomys pictipes is a Sigmodontinae rodent endemic to the Atlantic Forest. Herein, we report the first records of the species on the coast of the state of Paraná, filling a gap in the species’ distribution.
Ricardo Augusto Serpa Cerboncini, Cássio Marcelo Mochi Junior, Liliani Marilia Tiepolo, Fernando C Passos   +3 more
doaj   +1 more source

The genus Akodon (Muroidea: Sigmodontinae) in Misiones, Argentina

Mammalian Biology, 2003
Our understanding of the rodent diversity from the Argentinean Atlantic rainforest and its surrounding environments (Misiones Province) is still relatively poor. Here we present an update on the species inhabiting Misiones of the genus Akodon. Integrated analyses of morphology, chromosomal and molecular data allow us to document the existence of four ...
Pardiñas, Ulyses Francisco José, D'Elía, Guillermo, Cirignoli, Sebastián   +2 more
openaire   +3 more sources

Application of geometric morphometrics to the study of postnatal size and shape changes in the skull of <em>Calomys expulsus</em>

Hystrix, the Italian Journal of Mammalogy, 2000
<strong>Abstract</strong> We analyzed ontogenetic patterns of landmarks for 169 laboratory-raised specimens of <em>Calomys expulsus</em>, at 0, 5, 10, 20, 30, 50, 100, 200, and 300 days of age, using two-dimensional geometric ...
Erika Hingst-Zaher, Leslie Marcus, R. Cerqueira   +2 more
doaj   +1 more source

Constricted range and limited genetic variation in Reig’s Grass Mouse Akodon reigi (Cricetidae: Sigmodontinae) in the Southern Campos

Mammal Research
We present an updated distribution of Akodon reigi, a sigmodontine endemic to Campos in southern South America, and explore its habitat of occurrence and genetic diversity. Our findings reveal new occurrences of A.
F. M. Quintela, Jéssica Bandeira Pereira, Enrique Gonzalez, V. Valiati, Thales R. O. Freitas, Gislene Lopes Gonçalves   +5 more
semanticscholar   +1 more source

Ecologic Traits Analysis for Identifying Rodent Hosts for Arenavirus and Hepacivirus in the Americas

Biotropica, Volume 57, Issue 6, November 2025.
Over half of emerging human pathogens originate from wildlife, with rodents serving as key zoonotic hosts. This study used ecological trait‐based models to identify rodent traits associated with arenavirus and hepacivirus infections and detect potential host species across the Americas, our models achieve high predictive accuracy (AUC = 0.92–0.96).
María del Carmen Villalobos‐Segura, Oscar Rico‐Chavéz, Gerardo Suzán, Andrea Chaves   +3 more
wiley   +1 more source

Proteomic analysis resulting in species‐level identification of recently diverged North American arvicoline rodents

Journal of Quaternary Science, Volume 40, Issue 7, Page 1240-1251, October 2025.
ABSTRACT North American arvicoline rodents have long been considered to have high biogeographic, biochronologic, and paleoecological value. They provide relative dating of faunal assemblages when absolute dating is not possible and contribute to paleobiome characterization.
Erin M. Keenan Early, Christopher J. Bell, Matthew J. Collins, Timothy M. Shanahan   +3 more
wiley   +1 more source

Revision and analysis of the chromosome variability in the speciose genus Akodon (Rodentia, Sigmodontinae), including new data from Argentina.

Anais da Academia Brasileira de Ciências, 2023
Rodentia has a high species number and chromosomal variability. The South American genus Akodon is one of the most speciose muroids, with more than 40 species included in several species groups.
C. Labaroni, V. A. P. C. Mairhofer, A. Ojeda, A. Novillo, P. Teta, P. Jayat, Ricardo A Ojeda, L. Buschiazzo, Eugenio Cálcena, A. Bolzán, C. Lanzone   +10 more
semanticscholar   +1 more source