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Carbon Turnover in Tissues of a Passerine Bird: Allometry, Isotopic Clocks, and Phenotypic Flexibility in Organ Size

In “Carbon Turnover in Tissues of a Passerine Bird: Allometry, Isotopic Clocks, and Phenotypic Flexibility in Organ Size” (Physiological and Biochemical Zoology 82:787–797), Figure 2 reported allometric equations for four tissues (whole blood, red blood cells [RBC], liver, and leg muscle) that allowed prediction of fractional rates of carbon incorporation ( ) given mealog k sured body mass ( ). Unfortunately, the slope for the liver log mb tissue in the published figure legend was erroneous because of a missing number and exclusion of one species from the original data set. In addition, the constant for RBC presented in the original article refers to an older calculation based on birds and mammals combined, but in the final paper only bird data were used for RBC. Table 1 summarizes the corrected parameter estimates (in bold) to four significant digits from the regression analyses for the liver and RBC along with the other correct parameter estimates for the other tissues.