Publication
Title
Variability of the fast suction feeding process in **Astatotilapia elegans** (Teleostei: Cichlidae) : a hypothesis of peripheral feedback control
Author
Abstract
Movement analysis of the volume suction feeding type in Astarotilapia elegans suggests the existence of an inhibiting peripheral feedback control on the fast movements of the head parts, apparently triggered by the food items entering through the mouth aperture. As soon as the prey passes the mouth, rostral expansion of the buccopharyngeal cavity stops. On the basis of a mathematical model and physiological evidence, respectively, visual and chemical perception must probably be excluded as the initial stimulus of the feedback control. The simulation of the hydrodynamic characteristics of the suction flow at the level of the gape reveals sudden changes in the pressure and acceleration waves coupled to the moment of prey uptake. These fluctuations are premised to generate the triggering signal. The possibility of modulation entails re-evaluation of the neuro-motoric preprogamming concept.
Language
English
Source (journal)
Journal of zoology. - London
Publication
London : 1990
ISSN
0952-8369
0022-5460
Volume/pages
220:4(1990), p. 653-678
ISI
A1990DC94400011
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 05.01.2015
Last edited 17.11.2017
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