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Stable oxygen isotopes of dental biomineral: differentiation at the intra- and inter-tissue level of modern shark teeth
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology.
2014 (English)In: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 136, no 1, 337-340 p.Article in journal (Refereed) Published
Abstract [en]

In situ oxygen isotopic composition of the sandbar shark (Carcharhinus plumbeus) teeth grown at a constant water temperature and salinity were analysed by high precision and high spatialresolution secondary ion mass spectrometry, targeting dental biomineral within the parallel-bundled enameloid (PBE), the tangle-bundled enameloid (TBE) and the dentine. Measured O-18 values had comparable inter-tissue variability in each tooth analysed. The PBE enameloid had the smallest scatter of oxygen isotope ratios, while the TBE enameloid had slightly higher intra-tissue variation of O-18, but similar average values. The dentine had largest variability and lower average O-18. The enameloid of shark teeth is therefore recommended as a target biomineral and a preferential biogeochemical reference for environmental and palaeoenvironmental studies.

Place, publisher, year, edition, pages
2014. Vol. 136, no 1, 337-340 p.
Keyword [en]
biomineral, bioapatite, stable oxygen isotopes, enameloid, sharks
National Category
Geology
Identifiers
URN: urn:nbn:se:uu:diva-227954DOI: 10.1080/11035897.2013.878747ISI: 000335945500069OAI: oai:DiVA.org:uu-227954DiVA: diva2:732972
Available from: 2014-07-07 Created: 2014-07-02 Last updated: 2017-12-05Bibliographically approved

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