Nom du corpus

Corpus Systématique Animale

Titre du document

Development of the pharyngeal teeth in the big head, Aristichthys nobilis (Cyprinidae)

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Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_000862
Auteur(s)
  • Tsuneo Nakajima 1
  • Peiqi Yue 2
Affiliation(s)
  • 1) Department of Oral Anatomy, Asahi University School of Dentistry, Hozumi-cho, 501-02, Gifu Pref., Japan
  • 2) Institute of Hydrobiology Academia Sinica, Wuhan, Hubei Province, China
Résumé

The development of pharyngeal dentition was observed in the big head,Aristichthys nobilis, which is one of the hypophthalmichthyines of the cyprinids. This fish has the C-type larval dentition, in which no teeth ever occur at the position An3, and in which the first tooth at the position An2 is on the third replacement wave. So the positions Pol, Ce0, Ani and An2 in the larval dentition correspond to the positions A4, A3, A2 and A1 in the adult dentition, respectively. The initial tooth at each position is a conical one. The conical teeth are then changed to ones bearing a narrow grinding surface with a hook at the tip and some denticles on the margins. These teeth are of theLeuciscus stage. Tn the following teeth, the grinding surface is expanded, and the denticles are increased in number and distributed on not only the margins but also the whole grinding surface. These teeth bearing a very broad grinding surface characterize the hypophthalmichthyines. At the positions A2 to A4, the teeth become the hypophthalmichthyine type in the larval period. But the tooth at the position A1 becomes the hypophthalmichthyine type in the juvenile period. The morphological change of teeth in this species is simple although their teeth are highly specialized. We think that this phenomenon gives a hint on their phylogeny.

Catégories Science-Metrix
  • 1 - applied sciences
  • 2 - agriculture, fisheries & forestry
  • 3 - fisheries
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Identifiant ISTEX
4520C043457E168F0D8441AAF16E7D6E785D431F
Revue

Japanese Journal of Ichthyology

Année de publication
1989
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.298
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-5GVZZ8XZ-0
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