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Morphological change in an isolated population of red squirrels () in Britain.
R Soc Open Sci
January 2025
Centre for Integrative Anatomy, Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK.
The mechanical properties of dietary items are known to influence skull morphology, either through evolution or by phenotypic plasticity. Here, we investigated the impact of supplementary feeding of peanuts on the morphology of red squirrels () from five populations in Britain (North Scotland, Borders, Jersey and two temporally distinct populations from Formby (Merseyside)). Stable isotope analysis confirmed dietary ecology in 58 specimens.
View Article and Find Full Text PDFHeads and Tails: Comparative Osteology of Nearctic Dipsadid Snakes.
J Morphol
January 2025
Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
Although numerous studies have addressed some aspects of the cranial osteology of Nearctic dipsadid species, only the species within the genera Heterodon and Carphophis have a formal published description of their skull. Similarly, vertebral data on such species are extremely scarce, and most of the available literature is focused on fossils. Such group has a complex phylogenetic history, being recovered as monophyletic or nonmonophyletic depending on the approach.
View Article and Find Full Text PDFApplied Mandibular Osteometry in Young Lambs: Morphometric and Clinical Insights.
Anat Histol Embryol
January 2025
Laboratório de Design Anatômico/LabDA-Departamento de Morfologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
Osteometric studies of the mandible are useful for identifying polymorphisms that are affected by general factors of anatomical variation, such as breed and gender, but age-related changes have not yet been reported in sheep. Our results showed that the morphometric parameters of the mandible were significantly affected by the age of the lambs. However, at 155 days of age, the mandible already presents all the morphological characteristics observed in adult animals.
View Article and Find Full Text PDFDental Anomalies and Cranio-Dental Ontogeny in a Captive Wild Boar Population From France.
J Morphol
January 2025
Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements (AASPE), UMR CNRS 7209, Muséum National d'Histoire Naturelle, Paris, France.
Dental anomalies are frequent in boars and pigs, and they generally affect the first premolar loci. The prevalence of these dental anomalies was investigated in a large number of populations around the world. These studies mainly focused on the influence of domestication, size, sexual dimorphism or food hardness on these anomalies.
View Article and Find Full Text PDFThe Influence of Craniometric Variation on the Position of Mandibular Foramen: A Cadaveric Cross-Sectional Study.
Medicina (Kaunas)
November 2024
Department of Operative Surgery and Topographic Anatomy, First Moscow State Medical University (Sechenov University), 119435 Moscow, Russia.
: the mandibular foramen is an essential anatomic landmark in performing various dental and surgical procedures, including inferior alveolar nerve block (IANB). However, its position may vary based on the individual morpho-functional features of the skull and face. This study aims to conduct a personalized assessment of the location of the mandibular foramen in various shapes of skulls, faces, and mandibles.
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