| mortality of common loons in new england, 1987 to 2000. | diagnostic findings are presented on 522 common loons (gavia immer) found dead or moribund in new england (connecticut, maine, massachusetts, new hampshire, rhode island, and vermont, usa) between 1987 and 2000. common loon numbers and range in new england have decreased from historic levels over the last century due to a number of proposed factors. goals of this study were to identify and categorize causes of mortality and quantify natural versus anthropogenic causes. the majority of identifiab ... | 2003 | 12910757 |
| adverse effects from environmental mercury loads on breeding common loons. | anthropogenic inputs of mercury (hg) into the environment have significantly increased in the past century. concurrently, the availability of methylmercury (mehg) in aquatic systems has increased to levels posing risks to ecological and human health. we use the common loon (gavia immer) as an upper trophic level bioindicator of aquatic hg toxicity in freshwater lakes. multiple endpoints were selected to measure potential negative impacts from mehg body burdens on behavior, physiology, survival a ... | 2008 | 17909967 |
| documentation of malaria parasite ( plasmodium spp.) infection and associated mortality in a common loon (gavia immer). | we report malaria parasite infection ( plasmodium spp.) and associated mortality in a common loon (gavia immer) found dead on lake umbagog in new hampshire, us. necropsy findings showed the bird to be in good body condition but with pericardial edema and splenomegaly. histopathological examination of brain and heart revealed intraendothelial and intrahistiocytic proliferation of plasmodium merozoites with myocarditis. by pcr, the presence of plasmodium parasites was confirmed from all tissues sc ... | 2017 | 28665230 |