Hand development and sequence of ossification in the forelimb of the European shrew Crocidura russula (Soricidae) and comparisons across therian mammals.

Détails

ID Serval
serval:BIB_877D3A403D77
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Hand development and sequence of ossification in the forelimb of the European shrew Crocidura russula (Soricidae) and comparisons across therian mammals.
Périodique
Journal of Anatomy
Auteur(s)
Prochel J., Vogel P., Sánchez-Villagra M.R.
ISSN
0021-8782 (Print)
ISSN-L
0021-8782
Statut éditorial
Publié
Date de publication
2004
Volume
205
Numéro
2
Pages
99-111
Langue
anglais
Résumé
Hand development in the European shrew Crocidura russula is described, based on the examination of a cleared and double-stained ontogenetic series and histological sections of a c. 20-day-old embryo and a neonate. In the embryo all carpal elements are still mesenchymal condensations, and there are three more elements than in the adult stage: the 'lunatum', which fuses with the scaphoid around birth; a centrale, which either fuses with another carpal element or just disappears later in ontogeny; and the anlage of an element that later fuses with the radius. Carpal arrangement in the neonate and the adult is the same. In order to compare the relative timing of the onset of ossification in forelimb bones in C. russula with that of other therians, we built up two matrices of events based on two sets of data and used the event-pair method. In the first analysis, ossification of forelimb elements in general was examined, including that of the humerus, radius, ulna, the first carpal and metacarpal to ossify, and the phalanges of the third digit. The second analysis included each carpal, humerus, radius, ulna, the first metacarpal and the first phalanx to ossify. Some characters (= event-pairs) provide synapomorphies for some clades examined. There have been some shifts in the timing of ossification apparently not caused by ecological and/or environmental influences. In two species (Oryctolagus and Myotis), there is a tendency to start the ossification of the carpals relatively earlier than in all other species examined, the sauropsid outgroups included.
Mots-clé
Alligators and Crocodiles, Animals, Bone and Bones/embryology, Bone and Bones/physiology, Carnivora/embryology, Carnivora/physiology, Carpal Bones/embryology, Carpal Bones/physiology, Forelimb/embryology, Forelimb/physiology, Mammals/embryology, Marsupialia, Models, Biological, Osteogenesis/physiology, Rodentia, Shrews/embryology, Shrews/physiology, Species Specificity
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 17:33
Dernière modification de la notice
20/08/2019 14:46
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