دورية أكاديمية
Springhares, flying and flightless scaly-tailed squirrels (Anomaluromorpha, Rodentia) are the squirrely mouse: comparative anatomy of the masticatory musculature and its implications on the evolution of hystricomorphy in rodents.
| العنوان: | Springhares, flying and flightless scaly-tailed squirrels (Anomaluromorpha, Rodentia) are the squirrely mouse: comparative anatomy of the masticatory musculature and its implications on the evolution of hystricomorphy in rodents. |
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| المؤلفون: | Da Cunha L; Institut des Sciences de l'Évolution de Montpellier, Université de Montpellier, CNRS, IRD, c. c. 64, Montpellier, France., Fabre PH; Institut des Sciences de l'Évolution de Montpellier, Université de Montpellier, CNRS, IRD, c. c. 64, Montpellier, France.; Mammalogy/Vertebrate Zoology, American Museum of Natural History, New York City, New York, USA.; Mammal Section, Life Sciences, Vertebrate Division, The Natural History Museum, London, UK.; Institut Universitaire de France (IUF), Paris, France., Hautier L; Institut des Sciences de l'Évolution de Montpellier, Université de Montpellier, CNRS, IRD, c. c. 64, Montpellier, France.; Mammal Section, Life Sciences, Vertebrate Division, The Natural History Museum, London, UK. |
| المصدر: | Journal of anatomy [J Anat] 2024 Jun; Vol. 244 (6), pp. 900-928. Date of Electronic Publication: 2024 Feb 06. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Blackwell Publishing Country of Publication: England NLM ID: 0137162 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1469-7580 (Electronic) Linking ISSN: 00218782 NLM ISO Abbreviation: J Anat Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2002- : Oxford : Blackwell Publishing Original Publication: London, Cambridge Univ. Press [etc.]. |
| مواضيع طبية MeSH: | Masticatory Muscles*/anatomy & histology , Biological Evolution*, Animals ; Sciuridae/anatomy & histology ; Phylogeny ; Skull/anatomy & histology ; Mice/anatomy & histology |
| مستخلص: | Anomaluromorpha is a particularly puzzling suborder of Rodentia. Endemic to Africa, this clade includes the extant genera Idiurus, Anomalurus, Zenkerella, and Pedetes. These rodents present an hystricomorphous condition of the skull, characterized by a large infraorbital foramen, which evolved independently within the mouse-related clade over a span of approximately 57 million years. They exhibit a high disparity in craniomandibular and dental morphology that has kept their phylogenetic affinities disputed for a long time. Given the past significance of masticatory morphotypes in establishing the classification of Rodentia, we propose to explore variations in the masticatory apparatus of Anomaluromorpha in order to evaluate whether its related features can offer additional data for systematics and contribute to our understanding of the complexity of hystricomorphy. In order to do so, we used traditional dissection and diffusible iodine-based contrast-enhanced computed tomography (diceCT) to accurately describe and compare the anatomy of the specimens. We found that the muscle morphology displays clear differentiation among each anomaluromorph taxonomic unit. Specifically, the masseteric complex of Anomaluromorpha exhibits distinctive synapomorphies such as the infraorbital part of the zygomaticomandibularis muscle being separated into a rostral and orbital part and an absence of a posterior part of the zygomaticomandibularis. Additionally, the orbital portion of the infraorbital part originates from a well-marked ridge and fossa at the level of its area of origin on the anteromedial wall of the orbital cavity, a feature that is absent in other members of the mouse-related clade. This evident bony feature, among others, is strongly associated with muscular anatomy and can contribute to ascertaining the taxonomic status of extinct representatives of the clade. Finally, we showed that the hystricomorphy of Anomaluromorpha largely differs from those of Ctenohystrica and Dipodoidea and that the definition of this morphotype is complex and cannot be reduced simply to the size of the opening of the infraorbital foramen. (© 2024 The Authors. Journal of Anatomy published by John Wiley & Sons Ltd on behalf of Anatomical Society.) |
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| معلومات مُعتمدة: | DispaRat-ANR-20-CE02-0022-01 Agence Nationale de la Recherche |
| فهرسة مساهمة: | Keywords: Anomaluridae; Pedetidae; Zenkerellidae; function; masticatory apparatus; morphology; systematics |
| تواريخ الأحداث: | Date Created: 20240206 Date Completed: 20240515 Latest Revision: 20240517 |
| رمز التحديث: | 20240517 |
| مُعرف محوري في PubMed: | PMC11095315 |
| DOI: | 10.1111/joa.14013 |
| PMID: | 38318941 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1469-7580 |
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| DOI: | 10.1111/joa.14013 |