Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, 77843-2258, USA.
Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, 77843-4458, USA.
Bull Environ Contam Toxicol. 2021 Sep;107(3):406-411. doi: 10.1007/s00128-021-03161-3. Epub 2021 Mar 16.
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.
来自德克萨斯州莱文斯顿湖（LALIV）和里奇兰克里克（Richland Creek）两个筑巢地的新热带鸬鹚（Phalacrocorax brasilianus）的胸羽于 2014 年被收集，并对其进行了金属和类金属分析。来自两个地点或不同性别的鸬鹚的胸羽中，铝、砷、铬、铜、铁、铅、锑和硒的平均浓度没有显著差异。然而，来自里奇兰克里克的鸬鹚的钴、锰、镍和钒的平均浓度显著高于来自 LALIV 的鸬鹚；而来自 LALIV 的鸬鹚的锌浓度高于来自里奇兰克里克的鸬鹚（p<0.05）。总体而言，除了少数铅的异常值外，羽毛中的重金属和类金属浓度与来自世界各地其他鸬鹚的报道相似或较低，且低于对该物种产生致死或亚致死影响的关注水平。
