Article (Scientific journals)
Postembryonic development of the cephalic region in Heterobranchus longifilis
Vandewalle, Pierre; Gluckmann, Isabelle; Baras, Etienne et al.
1997In Journal of Fish Biology, 50 (2), p. 227-253
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Keywords :
Clariidae; Heterobranchus; Heterobranchus longifilis; Catfishes; Postembryonic development; Skeleton
Abstract :
[en] At hatching, Heterobranchus longifilis does not display any primordia of the cephalic skeleton. The latter appears 12 h post-hatching and develops in three stages up to day 16. The first stage (12 h to 2 days) involves almost exclusively the development of the chondrocranium. During the second period (days 3 8), dermal elements of the splanchnocranium appear. The final stage is marked by resorption of the cartilages, progressively replaced by ossifications (days 10 16). At their appearance the elements of the splanchnocranium are fused together, as are the first neurocranial elements. Later, the splanchnocranium splits up. By the time yolk sac is completely resorbed, the buccal and pharyngeal jaws are present, the suspensoria and hyoid bars are partially developed, and the parasphenoid partially closes the hypophyseal fenestra. These structures delimit a buccal activity that is probably functional, i.e. capable of participating in the intake of exogenous food. Next to continue its development is principally the splanchnocranium, completing the walls of the buccal cavity. Cartilage resorption parallels the appearance of endochondral ossifications (except for the trabecular bars). Braincase closure begins to accelerate once the buccal system is complete
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Vandewalle, Pierre ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Département de Biologie, Ecologie et Evolution
Gluckmann, Isabelle;  Université de Liège - ULiège > Institut de zoologie > Laboratoire de morphologie fonctionnelle
Baras, Etienne;  Lab. de Demographie des P., 8b Chemin de la Justice, 4500 Tihange, Belgium
Huriaux, Françoise ;  Institut d'anatomie, Lab. de Biol. Cell. et Tissulaire, 20 rue des Pitteurs, 4020 Liège, Belgium
Focant, Bruno ;  Institut d'anatomie, Lab. de Biol. Cell. et Tissulaire, 20 rue des Pitteurs, 4020 Liège, Belgium
Language :
English
Title :
Postembryonic development of the cephalic region in Heterobranchus longifilis
Publication date :
February 1997
Journal title :
Journal of Fish Biology
ISSN :
0022-1112
eISSN :
1095-8649
Publisher :
Blackwell, Oxford, United Kingdom
Volume :
50
Issue :
2
Pages :
227-253
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 30 July 2020

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