Anti-parasite treatment results in decreased estimated survival with increasing lead (Pb) levels in the common eiderSomateria mollissima

Field experiments where parasites are removed through treatment and contaminant levels in host tissues are recorded can provide insight into the combined effects of parasitism and contaminants in wild populations. In 2013 and 2014, we treated northern common eider ducks ( Somateria mollissima ) arriving at a breeding colony with either a broad-spectrum antihelminthic (PANACUR ® ) or distilled water, and measured their blood lead (Pb) levels....