Results 11 to 20 of about 1,267 (164)

Morphofunctional Space of the Forelimb in Caraguatypotherium munozi (Notoungulata; Mesotheriidae): Insights Into Wrist-Powered Digging. [PDF]

open access: yesJ Morphol
Caraguatypotherium munozi displays a distinctive morphofunctional configuration combining high wrist flexor leverage with reduced elbow mechanical advantage—traits consistent with wrist‐dominated scratch‐digging. Multivariate analyses place it outside the core morphospaces of extant locomotor groups.
Medina-González P, Moreno K.
europepmc   +2 more sources

A glimpse on the pattern of rodent diversification: a phylogenetic approach. [PDF]

open access: yesBMC Evol Biol, 2012
BACKGROUND: Development of phylogenetic methods that do not rely on fossils for the study of evolutionary processes through time have revolutionized the field of evolutionary biology and resulted in an unprecedented expansion of our knowledge about the ...
Fabre PH   +3 more
europepmc   +6 more sources

Skull shape and size variation within and between mendocinus and torquatus groups in the genus Ctenomys (Rodentia: Ctenomyidae) in chromosomal polymorphism context [PDF]

open access: yesGenetics and Molecular Biology, 2018
We tested the association between chromosomal polymorphism and skull shape and size variation in two groups of the subterranean rodent Ctenomys. The hypothesis is based on the premise that chromosomal rearrangements in small populations, as it occurs in ...
Rodrigo Fornel   +2 more
doaj   +2 more sources

Social modulation of the daily activity rhythm in a solitary subterranean rodent, the tuco-tuco (Ctenomys sp) [PDF]

open access: yesSleep Science, 2016
South American subterranean rodents are mainly described as solitary and mutual synchronization was never observed among individuals maintained together in laboratory.
Barbara Mizumo Tomotani   +3 more
doaj   +2 more sources

The conservation status of the tuco-tucos, genus Ctenomys (Rodentia: Ctenomyidae), in southern Brazil [PDF]

open access: yesBrazilian Journal of Biology, 2007
The goal of conservation biology should be related to the preservation of species and also to the evolutionary and ecological processes that were responsible to form them and that are still acting. We review the conservation status of the species of tuco-
FA. Fernandes   +3 more
doaj   +5 more sources

Hybridization between subterranean tuco-tucos (Rodentia, Ctenomyidae) with contrasting phylogenetic positions. [PDF]

open access: yesSci Rep, 2020
AbstractReproductive compatibility usually decreases according to increasing genetic difference and the time of divergence between species. However, the amount of modification required to influence hybridization may vary in different species. Thus, it is extremely important to conduct studies that seek to understand what and how variables influence the
Kubiak BB   +10 more
europepmc   +5 more sources

Presencia del género Ctenomys (Rodentia, Ctenomyidae) en el noreste de la provincia de Buenos Aires, Argentina Presence of the genus Ctenomys (Rodentia, Ctenomyidae) in northeastern Buenos Aires province, Argentina

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2010
La presente nota registra al género Ctenomys en la localidad de Lima, ubicada en el noreste de la provincia de Buenos Aires. Los restos aquí descriptos se encuentran a más de 150 km al norte de las citas previas más septentrionales dentro de la provincia,
Federico L. Agnolin   +3 more
doaj   +1 more source

Description of Pudica wandiquei n. sp. (Heligmonellidae: Pudicinae), a nematode found infecting Proechimys simonsi (Rodentia: Echimyidae) in the Brazilian Amazon

open access: yesBrazilian Journal of Biology, 2021
A new species of nematode parasite of the subfamily Pudicinae (Heligmosomoidea: Heligmonellidae) is described from the small intestine of Proechimys simonsi (Rodentia: Echimyidae) from the locality of Nova Cintra in the municpality of Rodrigues Alves ...
B. E. Andrade-Silva   +2 more
doaj   +1 more source

Roedores da Bacia do Alto Paraguai: uma revisão do conhecimento do planalto à planície pantaneira

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2021
A ordem Rodentia representa aproximadamente 39% da diversidade mundial de mamíferos, sendo que para o Brasil são reconhecidos atualmente 76 gêneros e 263 espécies.
Pâmela Castro Antunes   +10 more
doaj   +1 more source

Ontogeny of long-range vocalizations in a Neotropical fossorial rodent: the Anillaco Tuco-Tuco (Ctenomys sp.) [PDF]

open access: yesPeerJ, 2018
Tuco-tucos (Ctenomys spp.) are subterranean rodents that produce territorial, high intensity long-range vocalizations (LRVs) of broadband and low frequency that are essential for long-distance communication between individuals in different tunnel systems.
Juan Pablo Amaya, Juan Ignacio Areta
doaj   +2 more sources

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