| helminths parasitizing columbina picui (columbiformes: columbidae) in brazil. | columbina picui (picui ground-dove) is a small, diurnal columbid bird that lives, in couples or flocks, in open areas in the countryside and urban centers. the species occurs in brazil and other countries in south america. the aim of this study was to identify the helminths that parasitize c. picui in the state of rio grande do sul, southern brazil. thirty-four specimens were necropsied; in each case, the organs were isolated and examined separately. the nematodes and their prevalences were: asc ... | 2009 | 20050007 |
| activity patterns of st. louis encephalitis and west nile viruses in free ranging birds during a human encephalitis outbreak in argentina. | st. louis encephalitis virus (slev) (flavivirus) is a reemerging arbovirus in the southern cone of south america. in 2005, an outbreak of slev in central argentina resulted in 47 human cases with 9 deaths. in argentina, the ecology of slev is poorly understood. because certain birds are the primary amplifiers in north america, we hypothesized that birds amplify slev in argentina as well. we compared avian slev seroprevalence in a variety of ecosystems in and around córdoba city from 2004 (before ... | 2016 | 27564679 |
| erythrocyte micronucleus cytome assay of 17 wild bird species from the central monte desert, argentina. | birds have the potential to be considered valuable bioindicators of the quality of ecosystems and the environmental impact of pollutants. the aims of this study were to determine the micronuclei frequency and other nuclear abnormalities in erythrocytes by analyzing a wild bird community from central monte desert (argentina) and to clarify if there were any differences among certain species. frequencies of nuclear abnormalities were determined in 73 wild birds belonging to 17 species and two orde ... | 2016 | 27687758 |
| phthiraptera and gamasida parasites of columbina picui (temminck) (columbiformes: columbidae) in the state of rio grande do sul, southern brazil. | thirty-two specimens of columbina picui (picui ground-dove) were examined, and a collection of arthropods was made by washing the external surface of the body and the nasal cavity. the species in the order phthiraptera found and their respective prevalences, mean abundance and mean intensity were: columbicola passerinae (84.4%; 10.3; 12.2), hohorstiella passerinae (21.9%; 0.7; 3.1) and physconelloides eurysema (3.1%; 0.1; 2). the gamasid mites found in the birds and their respective prevalences, ... | 2012 | 22990830 |
| evaluation of argentinean bird species as amplifying hosts for st. louis encephalitis virus (flavivirus, flaviviridae). | st.louis encephalitis virus (slev) is an emerging human pathogen flavivirus in argentina. recently, it has reemerged in the united states. we evaluated the role as amplifying host of six resident bird species and analyzed their capacity as host during the 2005 encephalitis outbreak of slev in córdoba. eared dove, picui ground dove, and house sparrow were the three species with highest host competence index. at a city level, eared dove and picui ground dove were the most important amplifying host ... | 2018 | 29761767 |
| a comprehensive cytogenetic analysis of several members of the family columbidae (aves, columbiformes). | the columbidae species (aves, columbiformes) show considerable variation in their diploid numbers (2n = 68-86), but there is limited understanding of the events that shaped the extant karyotypes. hence, we performed whole chromosome painting (wcp) for paints gga1-10 and bacterial artificial chromosome (bac) probes for chromosomes gga11-28 for columbina passerina, columbina talpacoti, patagioenas cayennensis, geotrygon violacea and geotrygon montana. streptopelia decaocto was only investigated wi ... | 2020 | 32521831 |
| comparative chromosome painting in columbidae (columbiformes) reinforces divergence in passerea and columbea. | pigeons and doves (columbiformes) are one of the oldest and most diverse extant lineages of birds. however, the karyotype evolution within columbiformes remains unclear. to delineate the synteny-conserved segments and karyotypic differences among four columbidae species, we used chromosome painting from gallus gallus (gga, 2n = 78) and leucopternis albicollis (lal, 2n = 68). besides that, a set of painting probes for the eared dove, zenaida auriculata (zau, 2n = 76), was generated from flow-sort ... | 2018 | 29882066 |
| plasma cholinesterase activity in wild birds from undisturbed woodlands in the central monte desert. | plasma cholinesterase activity is a biomarker sensitive to the effect of organophosphate and carbamate pesticides, and its enzymatic levels have been previously unknown for most of the wild birds analyzed in the present study. our objectives were to establish plasma acetylcholinesterase levels in songbirds of 2 undisturbed sites in the central monte desert (argentina). we also examined the influence on cholinesterase activity of age, sex, body condition, feeding and migratory habits, and species ... | 2019 | 31063226 |