title: [Histological data on the pharyngeal jaws of Trachinotus teraia (Cuvier 1832), Carangidae (Osteichthyes, Perciformes) of tropical Africa].
abstract: The thick pharyngeal jaws of Trachinotus teraia are made up of small teeth embedded in an abundant acellular vascularized bone tissue. The diameter of the vascular canals is progressively reduced from the center of the jaw to the abrasive surface where they are wholly obliterated by bone tissue. Each tooth consists of a small cone of orthodentine without an apical hypermineralized cape. The teeth have a weak masticatory function compared to the surrounding bone tissue. The genesis of these teeth probably takes place in the inner part of the pharyngeal jaws; they then move progressively towards the abrasive surface. The inner localization of the first stages of dentinogenesis raises the question of an effective epidermal participation in the ontogenesis of the pharyngeal teeth in T. teraia.
mesh_terms: D000818:Animals; D003804:Dentin / Q000033:anatomy & histology; D003810:Dentinogenesis; D007568:Jaw / Q000033:anatomy & histology* / Q000098:blood supply; D008852:Microradiography; D009805:Odontogenesis; D010473:Perciformes / Q000033:anatomy & histology*; D010614:Pharynx / Q000033:anatomy & histology*; D014070:Tooth / Q000033:anatomy & histology*
vernacular_title: Données histologiques sur les mâchoires pharyngiennes de Trachinotus teraia (Cuvier 1832), Carangidae (Osteichthyen, Perciforme) d'Afrique tropicale.