IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Pharyngeal jaw movements in Oreochromis niloticus (Teleostei : Cichlidae): Preliminary results of a cineradiographic analysis
Aerts, P.; De Vree, F.; Vandewalle, P. (1986). Pharyngeal jaw movements in Oreochromis niloticus (Teleostei : Cichlidae): Preliminary results of a cineradiographic analysis. Ann. Soc. R. Zool. Bel. 116(1): 75-82
In: Annales de la Société Royale Zoologique de Belgique = Annalen van de Koninklijke Belgische Vereniging voor Dierkunde. Société Royale Zoologique de Belgique: Bruxelles. ISSN 0771-5528, more
Peer reviewed article  

Available in  Authors 

Keywords
    Oreochromis niloticus (Linnaeus, 1758) [WoRMS]; Brackish water

Authors  Top 
  • Aerts, P.
  • De Vree, F.
  • Vandewalle, P., more

Abstract
    Feeding in Oreochromis niloticus (implanted with metallic markers in the bones) was studied by cineradiography (50 fr/s) along lateral and dorso-ventral axes to visualize the movement patterns of the pharyngeal jaws during the different phases of food uptake. The images were digitized and plotted, indicating that the food particles are macerated in a single power stroke. During this cyclic movement the caudally pointing teeth of the upper pharyngeal jaw and the rostrally pointing teeth of the lower pharyngeal jaw move in opposite directions. The stereotyped movement pattern is not affected, either by varying size or varying hardness of the food items.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors