| histopathological findings of the kidney trematoda paratanaisia spp. (digenea: eucotylidae) in cattle egret (bubulcus ibis). | paratanaisia spp. was recorded from the right kidney of a cattle egret (bubulcus ibis) in kafr elsheikh governorate, nile delta, egypt. the bird showed marked emaciation and dissipation. necropsy findings revealed marked enlargement and brownish discoloration of the kidney. microscopic examination demonstrated marked dilatation of renal tubules with hyperplasia of lining epithelium due to presence of a trematode consistent with paratanaisia spp. eggs of this parasite were also noticed deeply wit ... | 2013 | 23856732 |
| relationship between heavy metals concentrations in egret species, their environment and food chain differences from two headworks of pakistan. | concentration of ten metals (cd, cr, co, cu, fe, li, mn, ni, pb and zn) were analyzed in the egg contents, prey and soil samples of little egret (egretta garzetta) and cattle egret (bubulcus ibis) from two headworks to determine habitat and species-specific differences; to assess the importance of prey and habitat contamination as an exposure source for heavy metals. concentration of cu, mn, cr and pb in egg contents, fe, co, cu, mn, zn in prey and fe, co, cu, ni, li in surface soils were signif ... | 2013 | 23816451 |
| assessment of trace elements and stable isotopes of three ardeid species at birama swamp, cuba. | the birama swamp is the second largest wetland in the caribbean region and it is inhabited by large populations of waterbirds. here we report, for the first time, the foraging ecology and pollutant levels of three ardeidae species: cattle egret (bubulcus ibis), snowy egret (egretta thula), and tricolored heron (e. tricolor) breeding in this wetland using stable-isotope (δ (15)n and δ (13)c) and trace elements [mercury (hg), lead (pb), and selenium (se)] analysis of chick feathers. our results sh ... | 2013 | 23535940 |
| heavy metals in eggshells of cattle egret (bubulcus ibis) and little egret (egretta garzetta) from the punjab province, pakistan. | concentrations of nine trace metals were determined to assess site-specific and species-specific differences using fast sequential atomic absorption spectrophotometer (varian faas-240) in eggshells of bubulcus ibis and egretta garzetta from seven heronries in the punjab province, pakistan. pattern of metal concentration followed the order: fe > zn > pb > mn > cd > cr > li > cu > ni. greater mean concentrations of mn(1.17 μg/g), ni(0.11 μg/g), pb(1.49 μg/g), cd(0.88 μg/g), cr(0.7 μg/g), cu(0.20 μ ... | 2013 | 23260238 |
| alterations in the infrared spectral signature of avian feathers reflect potential chemical exposure: a pilot study comparing two sites in pakistan. | chemical contamination of ecosystems is a global issue with evidence that pollutants impact on living organisms in a harmful fashion. developing sensor approaches that would allow the derivation of biomarkers or signatures of effect in target sentinel organisms and monitor environmental chemical contamination in a high throughput manner is of utmost importance. as biomolecules absorb infrared (ir), signature vibrational spectra related to structure and function can be derived. in light of this, ... | 2012 | 22832188 |
| patterns of resource partitioning by nesting herons and ibis: how are odonata exploited? | herons and ibis are colonially nesting waders which, owing to their number, mobility and trophic role as top predators, play a key role in aquatic ecosystems. they are also good biological models to investigate interspecific competition between sympatric species and predation; two processes which structure ecological communities. odonata are also numerous, diverse, mobile and can play an important role in aquatic ecosystems by serving as prey for herons and ibis. a relationship between prey size ... | 2012 | 22578577 |
| mercury bioaccumulation in organisms from three puerto rican estuaries. | we analyzed mercury levels in shrimp (palaemonetes sp.), blue crabs (callinectes sp.), fish (tarpon megalops atlantica and tilapia tilapia mossambica), lizards (ameiva exsul), cattle egret (bubulcus ibis) and moorhen (gallinula chloropus) in three estuaries in puerto rico in 1988. there were no quantifiable concentrations greater than the method detection limit of mercury in shrimp, crabs and lizards from any site. mercury levels were also below detection limits in tilapia, except for specimens ... | 1992 | 24226951 |
| do cattle egrets gain information from conspecifics when foraging? | we examined whether individual cattle egrets (bubulcus ibis) base their decisions of where to forage, and how long to stay in a patch, on the behavior of other flock members. cattle egrets commonly forage in flocks associated with cattle and capture prey at higher rates when they do not share a cow with another egret. foraging egrets provide cues of the location of prey and their success in capturing prey. therefore, there is the possibility of information transfer between egrets in a flock. we ... | 1991 | 28313158 |
| pathomorphology of liver & bile duct of the heron, bubulcus ibis linn., infected with the trematode, pegosomum egretti srivastava, 1957. | | 1975 | 1205523 |
| use of noninvasive 'bug-eggs' to enable comparative inferences on genetic mating system with and without parental information: a study in a cattle egret colony. | colonial waterbirds such as herons, egrets and spoonbills exhibit ecological characteristics that could have promoted the evolution of conspecific brood parasitism and extra-pair copulation. however, an adequate characterization of the genetic mating systems of this avian group has been hindered by the lack of samples of elusive candidate parents which precluded conducting conventional parentage allocation tests. here, we investigate the genetic mating system of the invasive cattle egret using h ... | 2017 | 28854191 |
| investigation of avian influenza infection in wild birds in ismailia and damietta cities, egypt. | this study was carried out to monitor avian influenza (ai) infection in wild birds in egypt. | 2017 | 28717324 |
| genomic characterisation of vinegar hill virus, an australian nairovirus isolated in 1983 from argas robertsi ticks collected from cattle egrets. | this report describes the near complete genomic sequence and subsequent analysis of vinegar hill virus (vinhv; tentative member of the genus orthonairovirus, family nairoviridae, order bunyavirales). vinhv is the second nairovirus reported to be isolated on mainland australia and the first to be sequenced and analysed. our genetic analysis shows that vinhv belongs to the dera ghazi khan genogroup, a group of viruses previously isolated in other parts of the world including asia, south africa, an ... | 2017 | 29206186 |
| avian influenza virus surveillance in south-central spain using fecal samples of aquatic birds foraging at landfills. | aquatic wild birds have been intensively studied to better understand their role in avian influenza virus (aiv) maintenance and spread. to date, aiv surveillance has primarily focused on natural aquatic environments where different bird species aggregate and viral survival is enhanced. however, artificial habitats such as landfills are attracting substantial numbers of wild birds, aiv reservoir species included. the use of landfills as a predictable food source has significantly influenced popul ... | 2017 | 29124060 |
| dietary proxies (δ15n, δ13c) as signature of metals and arsenic exposure in birds from aquatic and terrestrial food chains. | in this study, exposure to arsenic (as), lead (pb), cadmium (cd), copper (cu) and zinc (zn) was investigated in the blood, pectoral muscles and tail feathers of two terrestrial (spotted owlet; athena brama and bank myna; acridotheres ginginianus) and two aquatic (cattle egret; bubulcus ibis and pond heron; ardeola grayii) bird species inhabiting pakistan. food chain specimens, as well as the dietary proxies δ15n and δ13c, were also analyzed to validate potential trophic and dietary transfers of ... | 2020 | 32062182 |
| oxidative stress risk assessment through heavy metal and arsenic exposure in terrestrial and aquatic bird species of pakistan. | in this study, we investigated metal- and metalloid-induced oxidative stress response in two aquatic (cattle egret (bubulcus ibis) (n = 10), pond heron (ardeola grayii) (n = 10)), as well as two terrestrial (spotted owlet (athene brama) (n = 6) and bank myna (acridotheres ginginianus) (n = 16)) bird species collected from the outskirts of lahore city, pakistan. for this purpose, glutathione (tgsh) and lipid peroxidation (thiobarbituric acid-reactive substances (tbars)) levels and activities of a ... | 2020 | 31993901 |
| organophosphate flame retardants in heron eggs from upper yangtze river basin, southwest china. | the egg samples of four heron species, including black-crowned night heron (nycticorax nycticorax), little egret (egretta garzetta), chinese pond heron (ardeola bacchus) and cattle egret (bubulcus ibis), were collected from the upper yangtze river (changjiang) basin, southwest china in early summer of 2017. nine out of ten target organophosphate flame retardants (pfrs) were detected in these heron egg samples. the sum of concentrations of the pfrs quantified (∑pfrs) ranged from 63 to 590 pmol g- ... | 2019 | 31319314 |
| first isolation and molecular characterization of cryptococcus neoformans var. grubii in excreta of birds in the urban perimeter of the municipality of popayán, colombia. | cryptococcosis is a systemic opportunistic mycosis, caused by cryptococcus neoformans and cryptococcus gattii, which affects mainly the central nervous system of immunocompromised patients; no reports have been made on the isolation of the fungus from the environment of popayán, colombia. | 2019 | 30274952 |
| colonization with enterobacteriaceae-producing esbls, ampcs, and oxa-48 in wild avian species, spain 2015-2016. | antibiotic resistance is a global threat of complex and changeable epidemiology. the role of wild birds in the dissemination of antibacterial resistance might be underestimated. we studied the cloacal colonization by cefotaxime-resistant enterobacteriaceae in 668 wild birds in spain. eighty-eight wild birds (13.2%) of 28 species carried cefotaxime-resistant isolates; 58 of them (8.7%) carried extended-spectrum β-lactamases (esbls) and 15 (2.5%) plasmid-mediated ampcs of the blacit family. the 58 ... | 2018 | 29782210 |
| research note: detection of infectious bursal disease virus antibodies in free-living wild birds in zaria, nigeria. | infectious bursal disease virus (ibdv) is an immunosuppressive pathogen of poultry causing great economic losses to the poultry industry. in this study, the ibdv antibodies were detected in captured free-living wild birds in zaria, nigeria. one hundred and fifty free-living wild birds, comprising 30 birds each of 5 different species, were sampled over a period of 9 months. blood samples were collected from each bird, and harvested sera were tested for ibdv antibodies using enzyme-linked immunoso ... | 2020 | 32241478 |
| occurrence of salmonella infection and antimicrobial susceptibility for local salmonella isolates from different sources in a cross-sectional study. | salmonellosis is a considerable public health problem worldwide, with high economic importance in developed countries. the main purpose of this study was to determine the prevalence of salmonella infection and antibiogram analysis of isolated strains in a cross-sectional study in egypt 2016-2017. the study investigated twenty-eight salmonella isolates from different areas in egypt and different types of samples, such as human stool (9.3%), egyptian cattle egrets and storks (28.5%) and grilled ch ... | 2019 | 31897402 |
| spatio-temporal variability of ichthyophagous bird assemblage around western mediterranean open-sea cage fish farms. | ichthyophagous birds aggregate at cage fish farms attracted by caged and associated wild fish. spatio-temporal variability of such birds was studied for a year through seasonal visual counts at eight farms in the western mediterranean. correlation with farm and location descriptors was assessed. considerable spatio-temporal variability in fish-eating bird density and assemblage structure was observed among farms and seasons. bird density increased from autumn to winter, with the great cormorant ... | 2018 | 29910028 |
| evidence of low-habitat contamination using feathers of three heron species as a biomonitor of inorganic elemental pollution. | the concentration of 12 elements (as, cd, co, cr, cu, fe, hg, mn, ni, pb, se, and zn) has been investigated in the feathers of three species of ardeidae, namely the grey heron ardea cinerea, the little egret egretta garzetta, and the cattle egret bubulcus ibis, all breeding at a colony located in the southern padana plain (nw italy). this study is a first step for an evaluation of possible direct effects of these elements on chicks' survival and growth rate. fe, zn, cu, and mn were in the range ... | 2020 | 33114248 |
| effects of research disturbance on nest survival in a mixed colony of waterbirds. | long-term research is crucial for the conservation and development of knowledge in ecology; however, it is essential to quantify and minimize any negative effects associated with research to gather reliable and representative long-term monitoring data. in colonial bird species, chicks are often marked with coded bands in order to assess demographic parameters of the population. banding chicks in multi-species colonies is challenging because it involves disturbances to species that are at differe ... | 2019 | 31616597 |
| sperm structure of the cattle egret (bubulcus ibis). | it remains a major concern that sperm structure has continued to be poorly investigated and reported in avian species. to our knowledge, sperm structure in the order pelecaniforme has not been reported. although mcfarlane (1963; proceedings of the xiii international ornithological congress; ithaca, ny; american ornithologists' union) reported the study of spermatozoa in two genera and two species of the family ardeidae, he did not provide an account, or the names of the species examined. the pre ... | 2020 | 32537793 |
| non-invasive biomonitoring of mercury in birds near thermal power plants: lessons from maharashtra, india. | thermal power plants (tpps) have emerged as a major source of air, water, and soil pollution because of the presence of many toxic metals. the presence of mercury (hg) in fly ash has proven to be toxic in nature because of its tendency to get bioaccumulated and biomagnified in the food chain. the aim of the present study was to understand the presence of toxic hg in the feathers of wetland birds undertaking the study around a tpp located in nagpur, india. local wetland birds especially cattle eg ... | 2020 | 32240367 |
| egg recognition and chick discrimination in colonial breeding birds. | theory predicts that parents will not raise unrelated offsprings. for colonial breeding birds, evolving an ability to recognize their own eggs and chicks can prevent misdirecting parental behaviour. to verify this hypothesis, egg recognition experiments were performed on colonial breeding chinese pond herons (ardeola bacchus) and cattle egrets (bubulcus ibis) in chengmai and lingao, tropical hainan island, china. furthermore, a chick discrimination experiment was conducted on chinese pond herons ... | 2019 | 31493492 |
| assessment of heavy metals in different organs of cattle egrets (bubulcus ibis) from a rural and urban environment in pakistan. | the study was conducted to evaluate the concentration of essential elements (cu, fe, mn, ni, se, zn, and b) and non-essential elements (cd, pb, hg, cr, as, and ni) in muscle, liver, bone, and intestine of matured cattle egret (bubulcus ibis). sampling was carried out at two sites of lahore, pakistan-havalian karbath (site i) and mehmood booti (site ii)-over a period of 1 month in the winter season. metal analyses of samples were carried out using inductively coupled plasma mass spectroscopy (icp ... | 2019 | 30900122 |
| avian haemosporidians in the cattle egret (bubulcus ibis) from central-western and southern africa: high diversity and prevalence. | we described the geographic distribution of 82 haemosporidian lineages (plasmodium, haemoproteus, and leucocytozoon) in the cattle egret sampled in five countries in central-western and southern africa. seventy-three lineages have not previously been reported. we determined the prevalence of three haemosporidians in the samples. we investigated the influence of the internal environment of the host and environmental variables on the plasmodium diversity and whether environmental variables may exp ... | 2019 | 30794584 |
| isolation of salmonella spp. in cattle egrets (bubulcus ibis) from fernando de noronha archipelago, brazil. | the growth of the population of cattle egrets (bubulcus ibis) in the archipelago of fernando de noronha constitutes a threat to public health and biological diversity because of their competition with and predation on native species and the possibility of transmission of pathogens to human beings, livestock and native wildlife. the aim here was to search for, isolate and identify serovars of salmonella in clinically healthy local cattle egrets. cloacal swabs were obtained from 456 clinically hea ... | 2018 | 29606508 |
| pharmacokinetics of a single intramuscular injection of long-acting ceftiofur crystalline-free acid in cattle egrets ( bubulcus ibis). | we determined the pharmacokinetic properties of ceftiofur crystalline-free acid (ccfa), a long-acting antibiotic, after a single intramuscular injection in cattle egrets ( bubulcus ibis). a dose of 20 mg/kg was administered intramuscularly to 18 birds and blood samples were collected via jugular venipuncture at 1, 2, 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, and 240 hours after ccfa administration. plasma concentrations of ceftiofur free acid equivalents (cfaes) were measured via high-p ... | 2017 | 29327960 |
| characterization and zoonotic impact of shiga toxin producing escherichia coli in some wild bird species. | wild birds are considered silent vectors of some zoonotic water and food borne pathogens of public health significance. owing to the importance of shiga toxin producing escherichia coli (stec) as the most pathogenic among the emerging diarrheagenic e. coli groups that can infect man; the present study was designed to detect the occurrence of stec among wild birds in egypt. | 2017 | 29062203 |
| comparative infectivity and transmissibility studies of wild-bird and chicken-origin highly pathogenic avian influenza viruses h5n8 in chickens. | despite the recent advances in avian influenza viruses surveillance and genomic data, fundamental questions concerning the ecology and evolution of these viruses remain elusive. in egypt, h5n8 highly pathogenic avian influenza viruses (hpaivs) are co-circulating simultaneously with hpaivs of subtypes h5n1 and low-pathogenic avian influenza viruses (lpaivs) of subtype h9n2 in both commercial and backyard poultry. in order to isolate aivs from wild birds and to assess their potential in causing in ... | 2020 | 33271478 |