In comparison, 0.1 μg/g ww in prey fish would be predicted to result in THg concentrations in female common loon blood of 1.34 μg/g ww,27 1.56 μg/g ww16 ( using an average moisture content of 75.8%), 1.57 μg/g ww ( using the equation for 100−150 mm prey fish),13 and 1.58 μg/g ww