marine foraging birds as bioindicators of mercury in the gulf of maine.from existing databases, we compiled and evaluated 604 total mercury (hg) levels in the eggs and blood of 17 species of marine foraging birds from 35 gulf of maine islands to provide baseline data and to determine the best tissue, age class, and species for future biomonitoring. while mean hg levels in most species did not exceed adverse effects thresholds, levels in some individual eggs did; for all species arithmetic mean egg hg levels ranged from 0.04 to 0.62 (microg/g, wet weight). piscivoro ...200819277786
avian cholera in eider ducks in maine.outbreaks of avian cholera (pasteurella multocida) occur frequently in common eiders (somateria mollissima dresseri) in maine during early summer. studies over a seven year period show that over 90% of the loss occurred in incubating females and might be associated with their weakened condition because females do not feed during the incubation period. high nesting densities also may contribute to the losses. the exact source of p. multocida is unknown although carrier birds were found.1978650794
prevalence and distribution of wellfleet bay virus exposure in the common eider (somateria mollissima).between 1998 and 2014, recurrent mortality events were reported in the dresser's subspecies of the common eider ( somateria mollissima dresseri) on cape cod, massachusetts, us near wellfleet harbor. the early die-offs were attributed to parasitism and emaciation, but beginning in 2006 a suite of distinct lesions was observed concomitant with the isolation of a previously unknown rna virus. this novel pathogen was identified as an orthomyxovirus in the genus quaranjavirus and was named wellfleet ...201727763829
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