| prevalence and intensity of haemoproteus columbae in three species of wild doves from brazil. | the prevalence and intensity of blood parasites in three species of wild doves were studied in the municipality of junqueirópolis, in the western region of the state of são paulo, brazil. three species of doves were surveyed: 331 specimens of zenaida auriculata des murs, 1847, 62 specimens of columbina talpacoti temminck, 1811 and 57 specimens of scardafella squammata lesson, 1831. haemoproteus columbae kruse, 1890 was found in blood from all the doves species. the prevalence of this parasite wa ... | 2001 | 11285493 |
| 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 |
| sorbitol dehydrogenase in anas platyrhynchos and zenaida auriculata auriculata during development. | sorbitol dehydrogenase (e.c.n. 1.1.1.14) was studied in liver, kidney and gonads of zenaida auriculata auriculata (golden pigeon) and of anas platyrhynchos (creole domestic duck) from south american faunes. the specific activity of sdh increased from embryonic to adult stage and is higher in the anas platyrhynchos tissues. the electrophoretic studies performed in liver and kidney of both species during development showed variations in the number and intensity of the bands in accordance with the ... | 1975 | 1213054 |
| 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 |
| first study of cryptosporidium spp. occurrence in eared doves (zenaida auriculata). | cryptosporidium is a protozoan parasite with a wide range of hosts, including humans. however, only a few cryptosporidium species have been described in birds (c. meleagridis, c. baileyi, c. galli and c. avium). the aim of this study was to investigate the occurrence of cryptosporidium spp. in feces of eared doves (zenaida auriculata), followed by molecular characterization of the parasite. a total of 196 animals of both sexes were trap-captured; the animals were culled and the intestinal conten ... | 2019 | 31411313 |
| 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 |
| [molecular detection of saint louis encephalitis virus in mosquitoes in buenos aires]. | during march 2013 a population of eared doves (zenaida auriculata) was established in the center of city of buenos aires. considering the role of these birds as host competent for saint louis encephalitis virus (slev), a cdc light trap was put in place to perform entomologic surveillance. during this month 5 pools of mosquitoes (n = 48) were collected and taxonomically determined. three of them were classified as culex pipiens (n = 10) and the other two were culex spp. (n = 38). in this case, th ... | 2014 | 25555001 |
| reemergence of st. louis encephalitis virus in the americas. | we summarize and analyze historical and current data regarding the reemergence of st. louis encephalitis virus (slev; genus flavivirus) in the americas. historically, slev caused encephalitis outbreaks in the united states; however, it was not considered a public health concern in the rest of the americas. after the introduction of west nile virus in 1999, activity of slev decreased considerably in the united states. during 2014-2015, slev caused a human outbreak in arizona and caused isolated h ... | 2018 | 30457961 |
| formulated beta-cyfluthrin shows wide divergence in toxicity among bird species. | it is generally assumed that the toxicity of pyrethroid insecticides to birds is negligible, though few species have been tested. the oral acute toxicity of formulated beta-cyfluthrin was determined for canaries (serinus sp.), shiny cowbirds (molothrus bonariensis), and eared doves (zenaida auriculata). single doses were administered to adults by gavage. approximate lethal doses 50 (ld(50)) and their confidence intervals were determined by approximate d-optimal design. canaries were found to be ... | 2011 | 21584255 |
| 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 |
| eared dove (zenaida auriculata, columbidae) as host for st. louis encephalitis virus (flaviviridae, flavivirus). | st. louis encephalitis virus (slev) is an emerging flavivirus in south american countries. its ecology and biological transmission cycles are scarcely known. eared doves (zenaida auriculata) have frequently been found infected by slev, and therefore, could be suspected as slev hosts. thirty post-hatch-year eared doves were subcutaneously inoculated with the genotype v slev 78v-6507 viral strain and subsequently bled. no deaths or clinical signs of illness were observed in the inoculated doves. t ... | 2008 | 18429694 |
| first record of immature stages of amblyomma tigrinum (acari: ixodidae) on wild birds in chile. | for the first time, larvae and nymphs of amblyomma tigrinum ticks were found on three species of wild birds (zenaida auriculata, callipepla californica and nothoprocta perdicaria) in chile. a significant higher number of a. tigrinum was found on fledglings of z. auriculata and n. perdicaria than on adults of these species of birds. a significant higher number was also observed on n. perdicaria living in non-irrigated areas as compared with irrigated areas. infestation levels were 6.5, 6.3 and 10 ... | 2004 | 15285147 |
| diet of eared doves (zenaida auriculata, aves, columbidae) in a sugar-cane colony in south-eastern brazil. | farmers in the paranapanema valley (são paulo, brazil) have reported problems with flocks of eared doves (zenaida auriculata) eating sprouting soybeans. in this region these birds breed colonially in sugar-cane, and eat four crop seeds, using 70% of the dry weight, in the following order of importance: maize, wheat, rice, and soybeans. three weeds (euphorbia heterophylla, brachiaria plantaginea, and commelina benghalensis) were important. this information suggests that the doves adapted particul ... | 2001 | 12071322 |
| genetic characterization of toxoplasma gondii isolates from eared doves (zenaida auriculata) in brazil. | eared doves (zenaida auriculata), which are common in urban, rural and wild areas in many regions of brazil, are frequently prey for domestic cats. therefore toxoplasma gondii isolates obtained from doves may reflect greater environmental diversity than those from other hosts. the aim of the present study was to evaluate t. gondii seroprevalence, isolate and genotype strains from z. auriculata. serum and tissue samples were collected from 206 doves for use in the modified agglutination test (mat ... | 2017 | 25517521 |
| occurrence of gastrointestinal and renal helminths in zenaida auriculata (des murs, 1847) trap-captured from brazil. | this study aimed to determine the prevalence of gastrointestinal and renal helminths from naturally infected zenaida auriculata captured in londrina, paraná state. two hundred and one eared doves were trapped and the gastrointestinal and renal helminths were collected and identified according to morphological structures. one hundred and sixteen (57.71%) doves were parasitized by helminths with specific prevalences for ornithostrongylus quadriradiatus in 50 doves (24.88%), ascaridia columbae in 4 ... | 2013 | 24142175 |
| hypercarnivorous apex predator could provide ecosystem services by dispersing seeds. | large "hypercarnivorous" felids are recognized for their role as apex predators and hence as key elements in food webs and ecosystem functioning through competition and depredation. here we show that cougars (puma concolor), one of the largest and the most widely ranging apex felid predators with a strictly carnivorous diet, could also be effective secondary long distance seed dispersers, potentially establishing direct and non-herbivore mediated interactions with plant species at the bottom of ... | 2016 | 26791932 |
| comparative analyses of three swallow species (aves, passeriformes, hirundinidae): insights on karyotype evolution and genomic organization. | despite the richness of species in the hirudinidae family, little is known about the genome organization of swallows. the progne tapera species presents genetic and morphological difference when compared to other members of the same genus. hence, the aims of this study were to analyze the chromosomal evolution of three species progne tapera, progne chalybea and pygochelidon cyanoleuca - by comparative chromosome painting using two sets of probes, gallus gallus and zenaida auriculata, in order to ... | 2020 | 32162650 |
| novel insights into chromosome evolution of charadriiformes: extensive genomic reshuffling in the wattled jacana (jacana jacana, charadriiformes, jacanidae). | the order charadriiformes comprises three major clades: lari and scolopaci as sister group to charadrii. until now, only three charadriiformes species have been studied by chromosome painting: larus argentatus (lari), burhinus oedicnemus and vanellus chilensis (charadrii). hence, there is a lack of information concerning the third clade, scolapaci. based on this, and to gain a better understanding of karyotype evolution in the order charadriiformes, we applied conventional and molecular cytogene ... | 2020 | 32105288 |
| congenital human toxoplasmosis caused by non-clonal toxoplasma gondii genotypes in argentina. | toxoplasmosis, a worldwide distributed zoonosis, can be transmitted congenitally affecting fetuses and developing variable clinical signs. different toxoplasma gondii genotypes and infective dose are related factors with different clinical manifestations. several studies indicate that atypical strains could produce more severe clinical manifestations compared to typical strains. umbilical cord blood (n = 37) and placenta (n = 19) were collected at birth from women with acute t. gondii infection ... | 2019 | 30304711 |
| oral acute toxicity of imidacloprid, thiamethoxam and clothianidin in eared doves: a contribution for the risk assessment of neonicotinoids in birds. | neonicotinoids have recently been demonstrated to cause direct negative impacts on birds from north america and europe. to further understand the impact of these compounds on bird species and to improve risk assessment capacities, the current study determined the acute toxicities of imidacloprid, clothianidin, and thiamethoxam formulations on south american eared doves (zenaida auriculata). insecticides were administered by gavage to adult doves to determine median lethal doses (ld50) according ... | 2019 | 30308809 |
| the seasonal role of field characteristics on seed-eating bird abundances in agricultural landscapes. | in temperate agroecosystems, avian responses in abundance and distribution to landscape attributes may be exacerbated by the coupling of natural seasons and farming practices. we assessed the seasonal roles of field type, field use in the surroundings, and distance from a field to the nearest woodlot on the abundance of seed-eating birds in a 225,000 km2 study area in the pampas of central argentina. during spring-summer and autumn of 2011-2013, we randomly selected 392 fields and used transect ... | 2017 | 29491986 |
| reassessing the importance of granivorous pigeons as massive, long-distance seed dispersers. | long-distance dispersal (ldd) of plants remains as a little-understood, key ecological process. we present evidence indicating that granivorous pigeons may disperse large amounts of viable seeds when they die with seeds in their crops at long distance from the parent plant. research was conducted in eared dove (zenaida auriculata) breeding colonies in central argentina where breeding populations may reach over 8000 doves/ha. we measured (a) crop seed viability and germination rate from dead dove ... | 2009 | 19739393 |
| a spectrophotometric study of plumage color in the eared dove (zenaida auriculata), the most abundant south american columbiforme. | for birds, plumage color perception is critical in social interactions such as courtship, in both monochromatic and dichromatic species. in the eared dove (zenaida auriculata), perhaps the most abundant south american columbiforme, the plumage of males and females looks alike and both sexes share the same melanistic coloration with gray and pink tones. the aim of this study was therefore to determine whether evident sexual dichromatism exists in the plumage of the eared dove using a spectrophoto ... | 2016 | 27213273 |
| effect of land use in seasonal abundance of eared dove (zenaida auriculata) in southwestern brazil. | changes at the landscape scale associated with expansion in agricultural land use and changes in agricultural practices are common causes of alteration in patterns of abundance and composition of avian communities. eared dove (zenaida auriculata - des murs, 1847) is among the most common species in the neotropics, considered both as game and pest in some countries. here we characterized the regional and seasonal patterns of eared doves abundance in southwestern brazil and examined the relationsh ... | 2017 | 28562787 |
| survey of neospora caninum in eared doves (zenaida auriculata) in southern brazil. | neosporosis is an infectious disease caused by neospora caninum, a protozoan parasite that has worldwide distribution and is responsible for enormous economic losses in cattle. birds are considered a good bioindicator of environmental contamination, since they feed on the ground, being exposed to n. caninum oocysts. the aim of this study was to determine the occurrence of antibodies against n. caninum and to verify the presence of parasite dna in brain from free-ranging eared doves (zenaida auri ... | 2017 | 28716354 |
| first molecular detection of haemoproteus spp. and plasmodium spp. in eared doves (zenaida auriculata) in brazil. | the aim of this study was to verify the presence and identify the species of haemosporidian parasites in eared doves (zenaida auriculata) in brazil. two hundred and eleven male and female eared doves were trap-captured in four different regions of londrina city, in southern brazil. whole blood was collected in edta tubes through heart puncture after euthanasia in a co2 chamber. a nested pcr targeting the mitochondrial cytochrome b gene (cyt b) of haemoproteus spp./plasmodium spp. was performed, ... | 2020 | 32667500 |
| reproduction in the eared dove: an exception to the classic model of seasonal reproduction in birds? | in avian species living at high altitudes and latitudes, reproductive events are largely controlled by photoperiod, with changes being perceived mainly through encephalic photoreceptors located in the hypothalamus. it is known that during long day periods (reproductive periods), the information transmitted by brain photoreceptors triggers the production of thyroid hormones that regulate gnrh secretion, inducing secretion of pituitary gonadotropins. as a result, gonads develop and grow and the pr ... | 2020 | 32251889 |
| experimental inoculation of neospora caninum tachyzoites in eared doves (zenaida auriculata). | neospora caninum is an apicomplexan parasite distributed worldwide. although a positive association between the presence of birds and abortions in cattle associated to n. caninum has been reported, the role of the birds in the epidemiologic cycle of the parasite is unknown. to the best knowledge, no experimental studies have evaluated n. caninum in the eared dove, zenaida auriculata. therefore, we aimed to determine whether z. auriculat can act as intermediate host for n. caninum. eighteen birds ... | 2019 | 31077732 |
| temporal variations of allele frequencies in the eared dove (zenaida auriculata). | | 1981 | 7337693 |
| [enzyme polymorphism in a population of zenaida auriculata (golden pigeon) (author's transl)]. | by means of starch gel electrophoresis and specific staining, molecular forms of aspartate aminotransferase and soluble esterases have been investigated in liver extracts of individuals from a population of zenaida auriculata. four alleles at the locus corresponding to soluble or cytoplasmic aspartate aminotransferase have been demonstrated. distribution of phenotypes in the population is in perfect agreement with that expected according to the hardy - weinberg law. a large incidence of variants ... | 1977 | 616181 |
| interplay between the morphometry of the lungs and the mode of locomotion in birds and mammals. | we studied the lung diffusion parameters of two species of birds and two species of mammals to explore how structural and functional features may be paralleled by differences in life style or phylogenetic origin. we used two fast-flying species (one mammal and one bird), one running mammal and one bird species that flies only occasionally as models. the harmonic mean thickness of the air-blood barrier was very thin in the species we studied. an exception was the chilean tinamou notoprocta perdic ... | 2007 | 18064356 |
| improved prolactin crop-sac bioassay applying a morphometric approach. | a pigeon crop-sac bioassay for prolactin was developed applying a morphometric approach for quantification of the epithelial cell proliferation induced by the hormone. a small male dove, indigenous from south america (zenaida auriculata) previously castrated was used as experimental animal. the total dose of prolactin was divided into 4 daily injections administered systemically into the pectoral muscles. the number of the proliferated cell layers used as the bioassay end point was analyzed stat ... | 1990 | 2134906 |
| brachylaima mazzantii (trematoda): first record in zenaida auriculata (aves: columbidae). | | 2006 | 12058672 |