Experimental determination of the sources of otolith carbon and associated isotopic fractionation

By Christopher T. Solomon, Peter K. Weber, Joseph J Cech Jr, B. Ingram, Mark E. Conrad, M. Machavaram, Asya R Pogodina, Rebecca L. Franklin. 2006

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Experimental evaluation of stable isotope fractionation in fish muscle and otoliths (2010, background): “We are equally cautious in suggesting that otolith δ13C values can be used to calculate fish movements based on patterns of ambient DIC, irrespective of diet changes (Solomon et al. 2006).”
OTOLITH CHEMISTRY TO DESCRIBE MOVEMENTS AND LIFE-HISTORY PARAMETERS OF FISHES : HYPOTHESES, ASSUMPTIONS, LIMITATIONS AND INFERENCES (2008, background): “…contributes 70–80% to the carbon deposited in otoliths, with the remaining 20–30% coming from metabolic sources (Kalish 1991, Thorrold et al. 1997a, solomon et al. 2006). it should be noted that not all chemicals will act in similar manners, with chemicals such as strontium representing water…”
A non-lethal sampling method for stable carbon and nitrogen isotope studies of tropical fishes (2011, background): “otoliths) is derived from dissolved inorganic C (DIC) of surrounding water rather than from food (Solomon et al. 2006); this DIC is enriched in C relative to available food sources (McConnaughey et al.”