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The potential use of stable carbon and nitrogen isotope ratios (δ13C, δ15N) of fish gills for studies on fish feeding ecology was evaluated by comparing the δ13C and δ15N of gill tissue with the more commonly used white muscle tissue. To account for the effect of lipid content on the δ13C signatures, a study-specific lipid correction model based on C:N ratios was developed and applied to the bulk...
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