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Sturgeon and paddlefish (Acipenseridae) saggital otoliths are composed of the calcium carbonate polymorphs vaterite and calcite: acipenseridae otoliths are vaterite and calcite

Journal Article · · Journal of Fish Biology
DOI:https://doi.org/10.1111/jfb.13085· OSTI ID:1324076
 [1];  [1];  [1];  [2];  [3];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Southern Illinois Univ., Carbondale, IL (United States)
  3. Wisconsin Dept. of Natural Resources, Oshkosh WI (United States)

The otoliths of modern fishes are most commonly comprised of the metastable aragonite polymorph of calcium carbonate (CaCO3); however, sturgeons have otoliths reportedly comprised of the least stable of the three most-common polymorphs, vaterite. In this study, we used neutron diffraction to characterize CaCO3 polymorph composition of lake sturgeon and paddlefish otoliths. Based on previous summaries of CaCO3 composition over fish evolutionary history, we hypothesized that sturgeon and paddlefish otoliths would have similar polymorph composition. We found that despite previous reports of sturgeon otoliths being comprised entirely of vaterite, that all otoliths we examined in this study also had a calcite fraction that ranged from 17.9+ 6.0 wt. % to 35.9 + 2.9 wt. %. We also conducted a grinding experiment that demonstrated that calcite fractions were due to biological variation and not an artifact of polymorph transformation during preparation. Our study provides the initial characterization of the polymorph composition of the otoliths of lake sturgeon, and paddlefish and also provides the first-ever report of otoliths of Acipenserids as having a calcite fraction.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR) and Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1324076
Journal Information:
Journal of Fish Biology, Journal Name: Journal of Fish Biology; ISSN 0022-1112
Publisher:
Wiley - Fisheries Society of the British IslesCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Texture Analysis of Polycrystalline Vaterite Spherulites from Lake Sturgeon Otoliths journal May 2019
Empirically testing vaterite structural models using neutron diffraction and thermal analysis journal November 2016
Significance of otolith calcium carbonate crystal structure diversity to microchemistry studies journal May 2019
Chiral acidic amino acids induce chiral hierarchical structure in calcium carbonate journal April 2017
Ocean acidification promotes otolith growth and calcite deposition in gilthead sea bream (Sparus aurata) larvae journal May 2018
The art of otolith chemistry: interpreting patterns by integrating perspectives journal January 2019
Enigmatic ear stones: what we know about the functional role and evolution of fish otoliths: The role of fish otoliths in inner ear function journal September 2018
Otoliths of sub‐adult Lake Sturgeon Acipenser fulvescens contain aragonite and vaterite calcium carbonate polymorphs journal April 2019
Empirically Testing Vaterite Structural Models Using Neutron Diffraction and Thermal Analysis
  • Chakoumakos, Bryan C.; Pracheil, Brenda M.; Koenigs, Ryan P.
  • GSA Annual Meeting in Denver, Colorado, USA - 2016, Geological Society of America Abstracts with Programs https://doi.org/10.1130/abs/2016am-279320
conference January 2016

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