| longitudinal studies of west nile virus infection in avians, yucatán state, méxico. | following the introduction of west nile virus (wnv) into north america in 1999, surveillance for evidence of infection with this virus in migratory and resident birds was established in yucatán state, méxico in march 2000. overall, 8611 birds representing 182 species and 14 orders were captured and assayed for antibodies to wnv. of these, 5066 (59%) birds were residents and 3545 (41%) birds were migrants. twenty-one (0.24%) birds exhibited evidence of flavivirus infection. of these, 8 birds had ... | 2004 | 15018768 |
| skrjabinura gnedina, 1933 (nematoda: seuratoidea: seuratidae), in birds from the area de conservacion guanacaste, costa rica with description of a new species. | two species of skrjabinura gnedina, 1933, were collected in the intestines of birds from the area de conservación guanacaste (acg), costa rica. skrjabinura mesoamericana n. sp. inhabits dendrocincla homochroa, calocitta formosa, dendrocolaptes certhia, basileuterus rufifrons, and chordeiles acutipennis. the new species differs from all species of the genus by having dissimilar spicules, the right having a distinctive thin and bent handle on the proximal end. the new species can be further distin ... | 2005 | 15986622 |