Endolymph chemistry and otolith growth in fish

Patrick PAYAN, Hélène DE PONTUAL, Gilles Boeuf & Nicole MAYER-GOSTAN

en Comptes Rendus Palevol 3 (6-7) - Pages 535-547

Published on 31 October 2004

This article is a part of the thematic issue Biomineralization: diversity and unity

Otoliths are composed of 99% CaCO 3 in the aragonite form which is deposited daily onto an organic matrix. The mineralisation process takes place in an acellular medium, the endolymph, which is secreted by the inner-ear epithelium. The present review is mostly devoted to ionic and organic endolymph components (concentration and spatial distribution) in relation to otolith growth, with a special interest to the ionic supply from plasma to endolymph and to the biochemical relationships between endolymph and otolith matrix. .


Fish otoliths, endolymph, ions, organic matrix, otolith growth, calcification process

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