Results 51 to 60 of about 856 (158)

Morphological and Molecular Characterization of a New Trichuris Species (Nematoda- Trichuridae), and Phylogenetic Relationships of Trichuris Species of Cricetid Rodents from Argentina [PDF]

open access: yes, 2014
Populations of Trichuris spp. isolated from six species of sigmodontine rodents from Argentina were analyzed based on morphological characteristics and ITS2 (rDNA) region sequences.
Callejón, Rocío   +3 more
core   +5 more sources

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

A classification of the Gliridae (Rodentia) on the basis of dental morphology

open access: yesHystrix, the Italian Journal of Mammalogy, 1995
<strong>Abstract</strong> The supra-familiar relationships of the Gliridae are discussed. The criterion used for subdividing the Gliridae is the morphology of the cheek teeth because this is the only character known for all taxa.
Remmert Daams, Hans De Bruijn
doaj   +1 more source

Prolactin Is a Strong Candidate for the Regulation of Luteal Steroidogenesis in Vizcachas (Lagostomus maximus)

open access: yesInternational Journal of Endocrinology, Volume 2018, Issue 1, 2018., 2018
Prolactin (PRL) is essential for the maintenance of the corpora lutea and the production of progesterone (P4) during gestation of mice and rats, which makes it a key factor for their successful reproduction. Unlike these rodents and the vast majority of mammals, female vizcachas (Lagostomus maximus) have a peculiar reproductive biology characterized by
S. Proietto   +11 more
wiley   +1 more source

The habits and influence on the environment of the old world porcupine Hystrix cristata L. in the nothernmost part of its range [PDF]

open access: yes, 1980
The crested porcupine (Hystrix cristata L.) has been shown to have considerably increased in numbers and to have occupied new territories in Tuscany, which is the northernmost part of its range.
Santini, L.
core  

Androgen Receptors Expression in Pituitary of Male Viscacha in relation to Growth and Reproductive Cycle

open access: yesInternational Journal of Endocrinology, Volume 2015, Issue 1, 2015., 2015
The aim of this work was to study the androgen receptors (AR) expression in pituitary pars distalis (PD) of male viscachas in relation to growth and reproductive cycle. AR were detected by immunocytochemistry and quantified by image analysis. Pituitary glands from fetus, immature, prepubertal, and adult viscachas during their reproductive cycle were ...
Verónica Palmira Filippa   +4 more
wiley   +1 more source

Quadro citológico vaginal, concentração plasmática de progesterona durante a gestação e medidas fetais em paca (Cuniculus paca Linnaeus, 1766). [PDF]

open access: yes, 2019
Em 27 pacas (Cuniculus paca Linnaeus, 1766) objetivou-se descrever aos 30, 60 e 90 dias (D) de prenhez diagnosticada por ultrassonografia (US), os tipos celulares do epitélio vaginal em esfregaços vaginais, relatar as condições de abertura da vulva e as ...
CARNEIRO JUNIOR, J. M.   +6 more
core   +1 more source

Genetic Identification of Parasitic Giardia enterica in Three Wild Rodent Species from a Zoological Institution: First Host Records in Brazilian Porcupine (Coendou prehensilis) and Naked Mole Rat (Heterocephalus glaber), and Detection in Crested Porcupine (Hystrix cristata)

open access: yesJournal of Zoological and Botanical Gardens
Flagellates of the genus Giardia are intestinal parasites with a broad host range. Several Giardia duodenalis variants (assemblages) recently elevated to species rank—G. duodenalis (assemblage A1), G.
Lorena Esteban-Sánchez   +5 more
doaj   +1 more source

Evolution of placental function in mammals:the molecular basis of gas and nutrient transfer, hormone secretion, and immune responses [PDF]

open access: yes, 2012
Placenta has a wide range of functions. Some are supported by novel genes that have evolved following gene duplication events while others require acquisition of gene expression by the trophoblast.
Carter, Anthony Michael
core   +1 more source

Gastric dilatation and volvulus in a capybara (Hydrochoerus hydrochaeris, Linnaeus, 1766)

open access: yesVeterinary Record Case Reports, Volume 13, Issue 3, September 2025.
Abstract Gastric torsion has been described in several species, but this is the first documented case in a capybara. An entire, 6‐year‐old, female capybara was found dead in the indoor enclosure of the zoo in the morning. Pathological examinations revealed a large, bloated stomach upon opening the abdominal cavity.
Anna Linda Nógrádi   +3 more
wiley   +1 more source

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