| blood parasites of blue-winged teal ( anas discors ) from two migratory corridors, in the southern usa. | we collected 180 blue-winged teal ( anas discors ) in september and october 2002 from florida, us (n=100, representing the eastern migratory corridor) and the louisiana-texas, us, border (n=80, representing the western migratory corridor) and examined for blood parasites using thin heart-blood smears. leucocytozoon simondi, haemoproteus nettionis, and microfilariae were found in 16, 23, and 27 birds, respectively. prevalence of l. simondi and h. nettionis did not vary by migratory corridor, but ... | 2016 | 27285417 |
| optimizing surveillance for south american origin influenza a viruses along the united states gulf coast through genomic characterization of isolates from blue-winged teal (anas discors). | relative to research focused on inter-continental viral exchange between eurasia and north america, less attention has been directed towards understanding the redistribution of influenza a viruses (iavs) by wild birds between north america and south america. in this study, we genomically characterized 45 viruses isolated from blue-winged teal (anas discors) along the texas and louisiana gulf coast during march of 2012 and 2013, coincident with northward migration of this species from neotropical ... | 2016 | 25056712 |
| avian paramyxoviruses from migrating and resident ducks in coastal louisiana. | cloacal and tracheal swabs were collected from 1,409 hunter-killed ducks in cameron parish, louisiana, during the 1986 and 1987 waterfowl seasons. thirty avian paramyxoviruses (pmv's) were isolated from 605 blue-winged teal (anas discors), 75 mottled ducks (a. fulvigula), 375 gadwalls (a. strepera), 334 green-winged teal (a. crecca), and 20 mallards (a. platyrhynchos). prevalence of pmv decreased (p = 0.042) from september (4%) through november (2%) to december and january (1%). juveniles had a ... | 1991 | 2023311 |
| avian influenza viruses from migratory and resident ducks of coastal louisiana. | cloacal and tracheal swabs were collected from 1389 hunter-killed ducks in cameron parish, louisiana, during the 1986 and 1987 waterfowl seasons. twenty-eight avian influenza viruses (aivs) were isolated from 605 blue-winged teal (anas discors), 75 mottled ducks (a. fulvigula), 375 gadwalls (a. stepera) and 334 green-winged teal (a. crecca). prevalence estimates of aiv in ducks sampled during september, november, and december through january were 3.1%, 2.0%, and 0.4%, respectively. differences i ... | 1990 | 2369380 |