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Converting Chemical Signatures In Vaterite Otoliths To Aragonite Otoliths In Steelhead Trout: Developing A Partition Coefficient, Jamie Justice
Converting Chemical Signatures In Vaterite Otoliths To Aragonite Otoliths In Steelhead Trout: Developing A Partition Coefficient, Jamie Justice
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Otoliths are small bones near the brain of teleost fish that aid in hearing and balance. Otoliths are typically composed of a polymorph of calcium carbonate called aragonite; however, when stressed, fish may transition to producing a less dense polymorph called vaterite. Otoliths are typically used in studies of fish natal origin or migration patterns because 1) otoliths grow concentrically around an origin (birth point), 2) the material in the otolith is not replaced over time, and 3) microelements (Sr and Ba) can be incorporated into the otoliths in proportion to elemental ratios in the water (i.e., when fish move …