Otolith biomineralisation: Insights from a microstructural and microanalytical study

A. McFadden; B. Gillanders; A. Pring; B. Wade

doi:10.1017/S1431927614008332

Otolith biomineralisation: Insights from a microstructural and microanalytical study

A. McFadden, B. Gillanders, A. Pring, B. Wade

Research output: Contribution to journal › Conference article › peer-review

Abstract

In conjunction with microstructural interpretation, variation of the Sr/Ca ratio in otoliths of Platycephalus bassensis have been determined in an effort to uncover the role of biomineralisation in otolith trace element uptake. After subsequent microstructural analysis by Electron Backscatter Diffraction (EBSD), Sr/Ca ratios across otolith growth rings were determined by Electron Probe Microanalysis (EPMA). Results point towards heterogeneous Sr/Ca ratios across an individual otolith, with ratio variation shown to be associated with changing crystal fabric. The apparent correlation between otolith microstructure and chemistry, indicates that Sr incorporation is not exclusively environmentally regulated as previously thought [1-3], but rather falls under the influence of both biological and environmental factors.

Original language	English
Pages (from-to)	1320-1321
Number of pages	2
Journal	Microscopy and Microanalysis
Volume	20
Issue number	3
DOIs	https://doi.org/10.1017/S1431927614008332
Publication status	Published - 1 Aug 2014
Externally published	Yes
Event	Microscopy and Microanalysis 2014, M and M 2014 - Hartford, United States Duration: 3 Aug 2014 → 7 Aug 2014

Keywords

otolith
Aragonite
environmental conditions
biomineralisation
Sr/Ca ratios

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title = "Otolith biomineralisation: Insights from a microstructural and microanalytical study",

abstract = "In conjunction with microstructural interpretation, variation of the Sr/Ca ratio in otoliths of Platycephalus bassensis have been determined in an effort to uncover the role of biomineralisation in otolith trace element uptake. After subsequent microstructural analysis by Electron Backscatter Diffraction (EBSD), Sr/Ca ratios across otolith growth rings were determined by Electron Probe Microanalysis (EPMA). Results point towards heterogeneous Sr/Ca ratios across an individual otolith, with ratio variation shown to be associated with changing crystal fabric. The apparent correlation between otolith microstructure and chemistry, indicates that Sr incorporation is not exclusively environmentally regulated as previously thought [1-3], but rather falls under the influence of both biological and environmental factors.",

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author = "A. McFadden and B. Gillanders and A. Pring and B. Wade",

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TY - JOUR

T1 - Otolith biomineralisation

T2 - Microscopy and Microanalysis 2014, M and M 2014

AU - McFadden, A.

AU - Gillanders, B.

AU - Pring, A.

AU - Wade, B.

PY - 2014/8/1

Y1 - 2014/8/1

N2 - In conjunction with microstructural interpretation, variation of the Sr/Ca ratio in otoliths of Platycephalus bassensis have been determined in an effort to uncover the role of biomineralisation in otolith trace element uptake. After subsequent microstructural analysis by Electron Backscatter Diffraction (EBSD), Sr/Ca ratios across otolith growth rings were determined by Electron Probe Microanalysis (EPMA). Results point towards heterogeneous Sr/Ca ratios across an individual otolith, with ratio variation shown to be associated with changing crystal fabric. The apparent correlation between otolith microstructure and chemistry, indicates that Sr incorporation is not exclusively environmentally regulated as previously thought [1-3], but rather falls under the influence of both biological and environmental factors.

AB - In conjunction with microstructural interpretation, variation of the Sr/Ca ratio in otoliths of Platycephalus bassensis have been determined in an effort to uncover the role of biomineralisation in otolith trace element uptake. After subsequent microstructural analysis by Electron Backscatter Diffraction (EBSD), Sr/Ca ratios across otolith growth rings were determined by Electron Probe Microanalysis (EPMA). Results point towards heterogeneous Sr/Ca ratios across an individual otolith, with ratio variation shown to be associated with changing crystal fabric. The apparent correlation between otolith microstructure and chemistry, indicates that Sr incorporation is not exclusively environmentally regulated as previously thought [1-3], but rather falls under the influence of both biological and environmental factors.

KW - otolith

KW - Aragonite

KW - environmental conditions

KW - biomineralisation

KW - Sr/Ca ratios

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