Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25090
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Brachiopod punctae: A complexity in shell biomineralisation
Authors: Pérez-Huerta, Alberto
Cusack, Maggie
McDonald, Samuel
Marone, Federica
Stampanoni, Marco
Mackay, Seonaid
Contact Email: maggie.cusack@stir.ac.uk
Keywords: Synchrotron-radiation X-ray tomographic microscopy (SRXTM)
calcite
terebratulide
fibres
Issue Date: Jul-2009
Citation: Pérez-Huerta A, Cusack M, McDonald S, Marone F, Stampanoni M & Mackay S (2009) Brachiopod punctae: A complexity in shell biomineralisation, Journal of Structural Biology, 167 (1), pp. 62-67.
Abstract: Perforations ("punctae") are one of the most characteristic morphological shell features in calcite brachiopods. The significance of punctae is that they represent discontinuities in shell biomineralisation and thus add a level of complexity that must be accounted for in any model of brachiopod shell formation. A significant hindrance to understanding punctae growth and formation is the absence of sufficient information on volume, size and density. Here, we use synchrotron-radiation X-ray tomographic microscopy (SRXTM) to obtain three-dimensional information about punctae of five species of calcite brachiopods. X-ray tomography shows that punctae morphology is species-specific and reveals previously unknown levels of complexity for each species. This information is combined with previous data on morphology to discuss the function and growth of punctae. Overall the present study demonstrates the need to increase our understanding of discontinuities and the role of cell biology in the context of biomineralisation. © 2009 Elsevier Inc. All rights reserved.
DOI Link: http://dx.doi.org/10.1016/j.jsb.2009.03.013
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