Results 1 to 10 of about 1,267 (164)

Cranial morphological variation of Ctenomys lami (Rodentia: Ctenomyidae) in a restricted geographical distribution [PDF]

Genetics and Molecular Biology, 2023
The relationship between chromosomal and morphological variation in mammals is poorly understood. We analyzed the cranial size and shape variation in Ctenomys lami concerning to the geographic variation in their chromosome numbers.
Rodrigo Fornel, Renan Maestri, Pedro Cordeiro-Estrela, Daniela Sanfelice, Thales Renato O. de Freitas   +4 more
doaj   +4 more sources

Investigating the evolutionary dynamics of diploid number variation in Ctenomys (Ctenomyidae, Rodentia) [PDF]

Genetics and Molecular Biology, 2023
Contrary to predictions from classical hybrid sterility models of chromosomal speciation, some organisms display high rates of karyotype variation. Ctenomys are the current mammals with the greatest interspecific and intraspecific chromosomal variation ...
Thays Duarte de Oliveira, Thales R.O. de Freitas   +1 more
doaj   +4 more sources

Genomic Organization of Microsatellites and LINE-1-like Retrotransposons: Evolutionary Implications for Ctenomys minutus (Rodentia: Ctenomyidae) Cytotypes [PDF]

Animals, 2022
The Neotropical underground rodents of the genus Ctenomys (Rodentia: Ctenomyidae) comprise about 65 species, which harbor the most significant chromosomal variation among mammals (2n = 10 to 2n = 70). Among them, C.
Thays Duarte de Oliveira, Natasha Avila Bertocchi, Rafael Kretschmer, Edivaldo H. C. de Oliveira, Marcelo de Bello Cioffi, Thomas Liehr, Thales R. O. de Freitas   +6 more
doaj   +2 more sources

Natural life cycle of Versteria cuja (Taeniidae) in Argentina and histopathology of metacestodiasis in intermediate hosts [PDF]

Parasitology, 2023
Using morphological and molecular studies, the life cycle of Versteria cuja (Cestoda: Taeniidae) was elucidated, involving subterranean rodents (Ctenomyidae) as intermediate hosts, and the lesser grison, Galictis cuja (Mustelidae), as definitive host ...
Estefanía Bagnato, Francisco Acuña, Federico Brook, Gabriel Mario Martin, Claudio Gustavo Barbeito, María Celina Digiani   +5 more
doaj   +2 more sources

Incipient morphological specializations associated with fossorial life in the skull of ground squirrels (Sciuridae, Rodentia). [PDF]

J Morphol, 2023
Our morphometric analyses permit to discuss the putative behavioral and environmental parameters shaping the skull of ground squirrels in relation to their digging activity. Our paper reports that these sciurid rodents do show convergent morphological traits on both cranium and mandible in relation to fossorial life.
Gomes Rodrigues H, Damette M.
europepmc   +2 more sources

Repetitive DNA Dynamics, Phylogenetic Relationships and Divergence Times in Andean Ctenomys (Rodentia: Ctenomyidae) [PDF]

Biology
The genus Ctenomys comprises a group of rodents with remarkable karyotypic variability linked to the distribution of repetitive sequences and rearrangements.
Rodrigo A. Vargas, Ronie E. Haro, Camilla Bruno Di-Nizo, Elkin Y. Suárez-Villota   +3 more
doaj   +2 more sources

Natural life cycle and molecular characterization of Taenia talicei Dollfus, 1960 (Cestoda: Taeniidae) from northwestern Patagonia, Argentina [PDF]

International Journal for Parasitology: Parasites and Wildlife
Through morphological and molecular studies, the natural life cycle of Taenia talicei Dollfus, 1960 (Cestoda: Taeniidae) from Argentine Patagonia is elucidated, involving subterranean rodents (Ctenomyidae) as intermediate hosts, and the Andean fox ...
Estefanía Bagnato, Juan José Lauthier, Federico Brook, Gabriel Mario Martin, María Celina Digiani   +4 more
doaj   +2 more sources

Comparative Chromosome Painting Clarifies the Intraspecific Chromosomal Variation in Two Ctenomys Species (Rodentia: Ctenomyidae) [PDF]

Animals
Background: Ctenomys is a subterranean rodent genus known for exhibiting the highest levels of chromosome variation, both among species (2n = 10 to 70) and within species.
Thays Duarte de Oliveira, Natasha Ávila Bertocchi, Luciano Cesar Pozzobon, Ivanete de Oliveira Furo, Edivaldo Herculano Corrêa de Oliveira, Jorge C. Pereira, Malcolm A. Ferguson-Smith, Rafael Kretschmer, Thales R. O. de Freitas   +8 more
doaj   +2 more sources

Two rodent suborders have evolved missing amino acids in the lipid-binding region of apolipoprotein E. [PDF]

Lipids
Abstract The order Rodentia comprises nearly 45% of all extant taxa, currently organized into 31 living families, some 450 genera, and roughly 2010 species (Kelt & Patton, 2020). Considering that rodents began evolving at least 66 million years ago, it is not surprising that they have diversified into five distinct suborders.
Puppione DL.
europepmc   +2 more sources

Semicircular canal morphology in Rodentia and its relationship to locomotion. [PDF]

J Anat
Here, we present a selection of rodent inner ear 3D models in the lateral view, with rodents from seven locomotor categories (left to right: fossorial, semifossorial, semiaquatic, terrestrial, ricochetal, arboreal, and gliding). Semicircular canal (SCC) morphology, including radius of curvature and shape, can be differentiated between specialized forms
Hou L, Bertrand OC, Mudannayake HN, Rolian C, Cote S.   +4 more
europepmc   +2 more sources