Abstract
Breast feathers of Neotropic Cormorants (Phalacrocorax brasilianus) from two nesting colonies in Lake Livingston (LALIV) and Richland Creek, Texas, were collected during 2014 and were analyzed for metals and metalloids. Mean concentrations of Al, As, Cr, Cu, Fe, Pb, Sb, and Se were not significantly different in breast feathers of cormorants from the two locations or between sexes. However, mean concentrations of Co, Mn, Ni, and V were significantly greater in feathers of cormorants from Richland Creek than in those from LALIV; and Zn concentrations were greater in cormorants from LALIV than in those from Richland Creek (p < 0.05). Overall, except for a few outliers for Pb, concentrations of heavy metals and metalloids in feathers were similar or lower than those reported in other species of cormorants from all over the world and were below levels of concern for lethal or sublethal effects on the species.
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