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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Early development of cephalic pony elements in Chrysichthys auratus (Geoffroy Saint-Hilaire, 1808) (Pisces, Siluriformes, Claroteidae)

Pierre Vandewalle, Philippe Laleye and Bruno Focant (1995)

Early development of cephalic pony elements in Chrysichthys auratus (Geoffroy Saint-Hilaire, 1808) (Pisces, Siluriformes, Claroteidae)

BELGIAN JOURNAL OF ZOOLOGY, 125(2):329-347.

The inception and development of the bony cephalic skeleton of Chrysichthys auratus is described from hatching to 28 days. The larval development is divided, into morphological levels rather than following days after hatching or fry length. Fry were cleared by trypsin and stained with alizarine. The bony cephalic development passes through periods of fast and slow growth. These rates are not the same in different parts of the skull. The operculum, dentary and two branchiostegal rays are present after two days. The first bone appearing in the braincase is the parasphenoid; many of other bones develop subsequently and at the same time : the interoperculum, maxilla, lacrimal and upper pharyngeal jaw. The splanchnocranium continues to develop at a relatively fast rate while the neurocranium grows slowly. The braincase begins to close when the bucco-pharyngeal apparatus is almost complete.

early development; fish skull; cephalic bones; Pisces; Siluriformes; Claroteidae; Chrysichthys
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
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Belgian Journal of Zoology