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Titolo:
Dynamics of tooth formation and replacement in the zebrafish (Danio rerio)(Teleostei, Cyprinidae)
Autore:
Van der Heyden, C; Huysseune, A;
Indirizzi:
State Univ Ghent, Inst Zool, B-9000 Ghent, Belgium State Univ Ghent Ghent Belgium B-9000 , Inst Zool, B-9000 Ghent, Belgium
Titolo Testata:
DEVELOPMENTAL DYNAMICS
fascicolo: 4, volume: 219, anno: 2000,
pagine: 486 - 496
SICI:
1058-8388(200012)219:4<486:DOTFAR>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHARYNGEAL DENTITION; TEETH; VERTEBRATE; ALLIGATOR; EMBRYOLOGY; GENETICS; JAW;
Keywords:
development; replacement; tooth pattern; zebrafish; Danio rerio;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Van der Heyden, C State Univ Ghent, Inst Zool, KL Ledeganckstr 35, B-9000 Ghent, Belgium State Univ Ghent KL Ledeganckstr 35 Ghent Belgium B-9000
Citazione:
C. Van der Heyden e A. Huysseune, "Dynamics of tooth formation and replacement in the zebrafish (Danio rerio)(Teleostei, Cyprinidae)", DEV DYNAM, 219(4), 2000, pp. 486-496

Abstract

We have used three-dimensional reconstructions from serial sections as well as cleared and stained specimens to infer patterning of the pharyngeal dentition throughout ontogeny in the zebrafish. Each pharyngeal tooth has been monitored from its initiation to its complete disappearance (resorption and shedding). We have identified tooth families and have studied the persistence of the pattern through successive replacements. Teeth arise in two seemingly independent clusters, a ventral and a dorsal cluster, with differing patterning features. The ventral cluster consists of one row of five teeth in which a tooth is first initiated in position four, and subsequent teeth in adjacent positions, posterior and anterior to it. Replacement teeth inodd and even positions are initiated simultaneously during successive odontogenic waves but differ in generation number according to the timing of appearance of the first-generation tooth, i.e., the founder of the tooth family. Up to four teeth of a single tooth family are simultaneously present inearly juveniles of which two are usually "co-functional. " The number of teeth per tooth family is reduced in older juveniles and adults, reflecting aslowing down of the replacement rate. The consistent way in which the pattern is established and maintained during ontogeny calls for research of thepresence of specific molecular controls. (C) 2000 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 02:53:19