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Microstructure, nanostructure and composition of the shell of Concholepas concholepas (Gastropoda, Muricidae)

Published online by Cambridge University Press:  15 March 2003

Yannicke Dauphin ,
Nury Guzman ,
Alain Denis ,
Jean-Pierre Cuif  and
Luc Ortlieb
Yannicke Dauphin*
Affiliation:
Département des sciences de la terre, bât. 504, Université Paris XI-Orsay, 91405, Orsay cedex, France
Nury Guzman
Affiliation:
UR055 paléotropique, IRD, 32 av. H. Varagnat, 93143, Bondy cedex, France
Alain Denis
Affiliation:
Département des sciences de la terre, bât. 504, Université Paris XI-Orsay, 91405, Orsay cedex, France
Jean-Pierre Cuif
Affiliation:
Département des sciences de la terre, bât. 504, Université Paris XI-Orsay, 91405, Orsay cedex, France
Luc Ortlieb
Affiliation:
UR055 paléotropique, IRD, 32 av. H. Varagnat, 93143, Bondy cedex, France
*
dauphin@geophy.geol.u-psud.fr
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Abstract

Among the gastropods, some muricid shells are composed of an inner aragonitic crossed lamellar layer and a calcitic prismatic outer layer. The analysis of the structure and composition of the two layers of Concholepas shows that the crossed lamellar layer is similar to those of other Mollusc taxa. Sr, Mg and S contents are low in both layers. According to infrared spectrometry, the organic content of the outer calcitic layer is higher than that of the aragonitic crossed lamellar layer. The study of the nanostructure allows for the proposal of a new 3D interpretation of the fine structure of the crossed lamellar layer. The calcitic prismatic layer is compared with the outer calcitic prismatic layer of an archaeogastropod genus: Haliotis.

Keywords

MicrostructureCompositionShellMuricidaeConcholepas
Type
Research Article
Information
Aquatic Living Resources , Volume 16 , Issue 2 , March 2003 , pp. 95 - 103
Copyright
© Elsevier, IRD, Inra, Ifremer, Cemagref, 2003

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