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[letter: duck virus enteritis. case in quebec of a pathological condition resembling duck plague]. 1975166753
ecological studies on cyathocotyle bushiensis (digenea) and sphaeridiotrema globulus (digenea), possible pathogens of dabbling ducks in southern québec.over the past 20 yr, recurrent late-summer mortality of dabbling ducks in southern québec has been attributed to the digenean parasite cyathocotyle bushiensis. this study attempted to determine whether this parasite was still implicated in the epizootics, and examined aspects of the ecology of the parasite in the definitive host. comparison of prevalence and mean intensity of infection of all species of digenea between salvaged carcasses and hunter-shot ducks revealed that c. bushiensis and a se ...19883411699
[role of passerine birds in the ecology of influenza viruses].a total of 267 passerine birds distributed among 37 species were netted during spring 1980 and summer 1981 in the laurentian and montreal areas. all the cloacal swabs collected at that time wer free of influenza viruses. three and five days after oral administration of avian or human influenza a virus strains, 108 isolates were obtained from 42 of 134 passerine birds. positive samples were recovered mainly from the respiratory and the digestive tract and also from liver. spleen and kidneys. vira ...19836683860
prevalence and intensity of typhlocoelum cucumerinum (digenea) in wild anatids of quebec, canada.the upper respiratory tracts of 534 wild anatids representing 20 species, shot during the 1976, 1977 and 1978 hunting seasons, were examined for typhlocoelum cucumerinum (rudolphi, 1809). typhlocoelum cucumerinum cymbium (diesing, 1850) were recovered from anas platyrhynchos, anas rubripes, anas acuta, anas discors and anas crecca. the maximum prevalence (16.7%) and intensity of infection (1.6) occurred in mallards (a. platyrhynchos). aythya valisineria and aythya marila harboured typhlocoelum c ...19807373728
estimating the mercury exposure dose in a population of migratory bird hunters in the st. lawrence river region, québec, canada.st. lawrence river hunters (québec, canada) are exposed to the pollutants, especially mercury, that contaminate birds and fish. however, the health risks of this have remained unclear because of a lack of information about the hunters' duck, geese, and sportfish consumption habits. a nutritional survey was set up to characterize waterfowl and sportfish consumption in st. lawrence river duck hunters and to estimate their daily exposure to mercury. during the winter of 2000, 512 hunters selected f ...200415147926
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