Results 11 to 20 of about 499 (155)

Molerats (Bathyergidae, Rodentia) in South African National Parks: notes on the Taxonomic "isolation" and Hystricomorph Affinities of the family

open access: yesKoedoe: African Protected Area Conservation and Science, 1979
The history of classification ofAfrotropical molerats is reviewed and an assessment is made of the supposed taxonomic "isolation" of the molerats (bathyergids) by considering morphological features in the skull, post-cranial skeleton, reproductive organs
G de Graaff
doaj   +2 more sources

The Impact of Food Properties on Jaw Movements in Rodents: A Comparison Between Myomorphous and Hystricomorphous Species. [PDF]

open access: yesJ Morphol
ABSTRACT Rodents can be divided into three major morphological groups (myomorphy, sciuromorphy, and hystricomorphy; additionally, protogomorphy can be found in only one recent species) based on the configuration of the skull and jaw muscles.
Sommerfeld S   +3 more
europepmc   +5 more sources

I W Rowlands, Barbara J Weir and the biology of the hystricomorph rodents

open access: yesReproduction, 2023
  In brief Current research on the genomics, ecology and reproductive biology of hystricomorph rodents relies on the pioneering studies of B J Weir and I W Rowlands. We show the enduring influence of a symposium on hystricomorph biology held 50 years ago.
Anthony M Carter   +2 more
openaire   +3 more sources

Crepuscular Rhythms of EEG Sleep-Wake in a Hystricomorph Rodent, Octodon degus [PDF]

open access: yesJournal of Biological Rhythms, 1998
Sleep-wake circadian rhythms are well documented for nocturnal rodents, but little is known about sleep regulation in diurnal or crepuscular rodent species. This study examined the circadian sleep-wake rhythms in Octodon degus by means of electroencephalogram (EEG) analysis. Recordings were made from animals housed with or without running wheels in the
M J, Kas, D M, Edgar
core   +8 more sources

Leishmania braziliensis ssp. in the nasal mucosa of guinea pigs inoculated in the tarsi

open access: yesMemorias do Instituto Oswaldo Cruz, 1992
Two lots of 20 young male guinea pigs were inoculated subcutaneously in the tarsi with 10 (elevated to fourth potency) amastigotes of Leishmania braziliensis or L. b.
Jose V. Scorza   +3 more
doaj   +2 more sources

Functional evolution of the feeding system in rodents. [PDF]

open access: yesPLoS ONE, 2012
The masticatory musculature of rodents has evolved to enable both gnawing at the incisors and chewing at the molars. In particular, the masseter muscle is highly specialised, having extended anteriorly to originate from the rostrum.
Philip G Cox   +5 more
doaj   +3 more sources

The morphology of female genitalia in Galea spixii (Caviidae, Caviinae) [PDF]

open access: yesBioscience Journal, 2014
The yellow-toothed cavy (Galea spixii) is a hystricomorph rodent of the Caviidae family. In Brazil, G. spixii are bred in captivity to provide an alternative protein source and to preserve the specie.
Amilton Cesar dos Santos   +6 more
doaj   +4 more sources

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing-bite among saber-toothed predators? [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Figueirido B   +2 more
europepmc   +2 more sources

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

open access: yesLipids
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

Reproductive Technologies Used in Female Neo-Tropical Hystricomorphic Rodents [PDF]

open access: yesAnimals, 2021
This is the second of two literature reviews that focuses on the female reproductive anatomy and reproductive technologies used in selected neo-tropical hystricomorphic rodents. The rodents chosen included the agouti (Dasyprocta leporina), the capybara (Hydrochoerus hydrochaeris), and the paca (Cuniculus paca).
Kavita Ranjeeta Lall   +2 more
openaire   +5 more sources

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