| rapid antigen-capture assay to detect west nile virus in dead corvids. | the utility of the vectest antigen-capture assay to detect west nile virus (wnv) in field-collected dead corvids was evaluated in manitoba and ontario, canada, in 2001 and 2002. swabs were taken from the oropharynx, cloaca, or both of 109 american crows, 31 blue jays, 6 common ravens, and 4 black-billed magpies from manitoba, and 255 american crows and 28 blue jays from ontario. the sensitivity and specificity of the antigen-capture assay were greatest for samples from american crows; oropharyng ... | 2003 | 14718083 |
| attraction of culex pipiens/restuans (diptera: culicidae) mosquitoes to bird uropygial gland odors at two elevations in the niagara region of ontario. | in an effort to determine whether female culex pipiens l. and culex restuans theobald mosquitoes (diptera: culicidae) are attracted to crow, corvus brachyrhynchus, uropygial gland secretions, cdc miniature light traps (baited with co2 but with the lights removed) were placed at approximately 1.5- and 5-m elevations, in 10 trees in awoodlot near niagara falls, canada. these traps were assigned either a bird odor or a blank control. bird odors were created by attaching cotton swabs coated with cro ... | 2005 | 15962778 |
| use of observed wild bird activity on poultry farms and a literature review to target species as high priority for avian influenza testing in 2 regions of canada. | the risk of avian influenza outbreaks in poultry is partially dependent on the probability of contact between domestic poultry and wild birds shedding avian influenza (ai) virus. the major objective of this study was to document wild bird activity on poultry farms to determine which wild bird species should be targeted for ai surveillance in canada. we collected data in 2 major poultry producing regions of canada, southwestern ontario and the fraser valley of british columbia, on the relative ab ... | 0 | 22851777 |
| diplotriaena tricuspis (fedtschenko, 1874) (nematoda: diplotriaenoidea) in crows (corvus brachyrhynchos brehm) wintering in ontario. | two hundred and eleven of 4404 (4.8%) crows (corvus brachyrhynchos) collected in the winters of 1976-77 and 1977-78 in essex county, southwestern ontario, were infected with diplotriaena tricuspis (fedtschenko, 1874) henry and ozoux, 1909. prevalence of potentially patent infections was only 2.6%, however, as crows often had nematodes of a single sex only. intensity was 4.0 (1-74) and was similar in both male and female crows of all age groups. intensity tended to be higher in young-of-the-year ... | 1980 | 7411742 |