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

2016/07/27 by B. M. Pracheil, Brenda M. Pracheil, B. C. Chakoumakos +9 · 1 citation
Environmental Science · Agricultural and Biological Sciences · #Ichthyology and Marine Biology #Fish Biology and Ecology Studies #Fish Ecology and Management Studies

paper · doi:10.1111/jfb.13085

Abstract

This study sought to resolve whether sturgeon (Acipenseridae) sagittae (otoliths) contain a non-vaterite fraction and to quantify how large a non-vaterite fraction is using neutron diffraction analysis. This study found that all otoliths examined had a calcite fraction that ranged from 18 ± 6 to 36 ± 3% by mass. This calcite fraction is most probably due to biological variation during otolith formation rather than an artefact of polymorph transformation during preparation.

Citations

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