| intestinal carriage of yersinia pseudotuberculosis by wild birds and mammals in japan. | fecal specimens were obtained from wild birds and mammals in the eastern part of shimane prefecture, japan, an area where serotype 1b, 2b, 3, and 4b strains of yersinia pseudotuberculosis were found to be prevalent in humans. each of 869 animals, including 259 wild birds and 610 wild mammals, was screened for yersiniae. a total of 37 strains of y. pseudotuberculosis were isolated from 34 (5.6%) mammals, including 23 raccoon dogs (nyctereutes procyonoides), eight deer (cervus nippon), two hares ( ... | 1991 | 2059038 |
| [wardoides nyrocae (yamaguti, 1935) spassky, 1962 (cestoda) found in a new host anas penelope]. | | 1969 | 5393222 |
| occurrence of influenza a viruses and their antibodies in migratory birds in finland. | a finnish material of 455 cloacal specimens from 24 species of small migratory birds and of 54 cloacal specimens from 10 species of waterfowl was investigated for the occurrence of a type influenza virus. influenza a virus was isolated in only one specimen, originating from a mallard (anas platyrhynchos). parallely, yolk material from 109 waterfowl representing 9 species was investigated for the occurrence of influenza a antibodies by complement fixation and immunodiffusion tests. in three yolk ... | 1980 | 7232144 |
| antibodies to flaviviruses in wild ducks captured in hokkaido, japan: risk assessment of invasive flaviviruses. | recently, the distribution of japanese encephalitis virus (jev) and west nile virus (wnv) has expanded into new territories. the invasion of wnv into japan is of great concern. the migration of birds is suggested to be involved in the expanded distribution of these flaviviruses. in this study, 92 wild ducks--20 anas poecilorhyncha (migratory breeders), 50 anas platyrhynchos (undetermined), 16 anas acuta (winter visitors), and 6 anas penelope (winter visitors)--were captured in autumn of 2005 and ... | 2009 | 19514809 |
| influenza a viruses in wild birds of the pacific flyway, 2005-2008. | avian influenza viruses (aivs) pose a significant threat to public health, and viral subtypes circulating in natural avian reservoirs can contribute to the emergence of pathogenic influenza viruses in humans. we investigated the prevalence and distribution of aivs in 8826 migratory and resident wild birds in north america along the pacific flyway, which is a major north-south migration pathway that overlaps with four other flyways in alaska providing opportunities for mixing of eurasian and amer ... | 2010 | 20059316 |
| metal levels in livers of waterfowl from korea. | this study presents concentrations of heavy metals (iron, zinc, manganese, copper, lead and cadmium) in livers of white-fronted geese (anser albifrons), eurasian wigeons (anas penelope), mallards (anas platyrhynchos) and spot-billed ducks (anas poecilorhyncha) from korea in february 2006 and 2008. iron concentrations were significantly lower in spot-billed ducks than in other species (anova, p<0.001). zinc concentrations were greater in white-fronted geese and spot-billed ducks than in eurasian ... | 2011 | 22177482 |
| neospora caninum in wild waterfowl: occurrence of parasite dna and low antibody titers. | thirty-five adult waterfowl (14 males and 21 females) representing various orders and species were sampled during the hunting season from 2015 to 2016. antibodies to neospora caninum were detected by ifat on blood samples, while heart and brain were subjected to molecular analysis for the detection of neospora caninum dna. twelve birds (34.3%) (6 anas crecca , 3 anas platyrhynchos , 2 anas penelope , 1 anas acuta ) showed antibodies versus n. caninum , while 10 animals out of 35 (4 a. crecca , 2 ... | 2017 | 27805842 |
| [diagnostic features of microsomacanthus microsoma (creplin, 1829), type species of the genus microsomacanthus lopez-neyra, 1942, as the base for the revision of the genus]. | the genus microsomacanthus was created by lopez-neyra (1942). its type species, taenia microsoma creplin, 1829, was described from the common eider somateria mollissima and remained a collective species until fuhrmann (1913) revealed its diagnostic features on the original material. simultaneously he described two new species of "microsoma-gruppe", microsomacanthus jaegerskioeldi (fuhrmann, 1913) and m. diorchis (fuhrmann, 1913). fuhrmann stressed that under the name of hymenolepis microsoma coh ... | 2010 | 21309145 |
| surveillance and identification of influenza a viruses in wild aquatic birds in the crimea, ukraine (2006-2008). | the ecology of avian influenza (ai) viruses in wild aquatic birds of asia is poorly understood, especially for the h5n1 high pathogenicity ai (hpai) viruses. from march 2006 through november 2008, 20 ai viruses were isolated in the crimea region of ukraine with an overall frequency of virus recovery of 3.3%. all the viruses were isolated from three species of dabbling ducks: mallard (anas platyrhynchos), wigeon (anas penelope), and garganey (anas querquedula), making the frequency of virus recov ... | 2010 | 20945793 |
| [genetic structure of the far eastern population of eurasian wigeon anas penelope inferred from sequencing of the mitochondrial dna control region]. | sequence variation of the 5' end of the mitochondrial dna control region (600 bp) was examined in the population samples of eurasian wigeon anas penelope from anadyr' and primorye. a total of 11 different mtdna haplotypes were identified, with one of these belonging to american wigeon anas americana. the presence of the mtdna haplotype from the species closely relative to a. penelope in the anadyr' sample can be considered as the genetic evidence in favor of interspecific hybridization. this sug ... | 2010 | 20873206 |
| migration of waterfowl in the east asian flyway and spatial relationship to hpai h5n1 outbreaks. | poyang lake is situated within the east asian flyway, a migratory corridor for waterfowl that also encompasses guangdong province, china, the epicenter of highly pathogenic avian influenza (hpai) h5n1. the lake is the largest freshwater body in china and a significant congregation site for waterfowl; however, surrounding rice fields and poultry grazing have created an overlap with wild waterbirds, a situation conducive to avian influenza transmission. reports of hpai h5n1 in healthy wild ducks a ... | 2010 | 20521681 |
| prevalence and subtypes of influenza a viruses in wild waterfowl in norway 2006-2007. | the prevalence of influenza a virus infection, and the distribution of different subtypes of the virus, were studied in 1529 ducks and 1213 gulls shot during ordinary hunting from august to december in two consecutive years, 2006 and 2007, in norway. the study was based on molecular screening of cloacal and tracheal swabs, using a pan-influenza a rt-pcr. samples found to be positive for influenza a virus were screened for the h5 subtype, using a h5 specific rt-pcr, and, if negative, further subt ... | 2010 | 20426812 |
| avian influenza virus monitoring in wintering waterbirds in iran, 2003-2007. | virological, molecular and serological studies were carried out to determine the status of infections with avian influenza viruses (aiv) in different species of wild waterbirds in iran during 2003-2007. samples were collected from 1146 birds representing 45 different species with the majority of samples originating from ducks, coots and shorebirds. samples originated from 6 different provinces representative for the 15 most important wintering sites of migratory waterbirds in iran. | 2010 | 20167132 |
| gymnophallid digenean parvatrema duboisi uses manila clam as the first and second intermediate host. | to identify the metacercariae of a gymnophallid trematode in the manila clam ruditapes philippinarum from the ariake sea, experimental infection and molecular analysis were conducted. based on the morphology of adult worms obtained from experimentally infected mice, the parasite was identified as parvatrema duboisi. comparison of internal transcribed spacer (its) region of ribosomal dna (rdna) sequences for metacercariae and sporocysts from manila clams and adult worms collected from wild wigeon ... | 2009 | 19460459 |
| bird schistosome diversity in iceland: molecular evidence. | during the years 2002-2007, icelandic freshwater snails and birds from different orders were examined for bird schistosomes. only the snail radix peregra and anatid birds proved to be infected. in total, 32 samples of bird schistosome cercariae from seven localities and four samples of adults of anas platyrhynchos and mergus serrator from two localities were used for sequencing of the internal transcibed spacer (its) region of rdna. based on the sequence and position in the phylogenetic tree, fi ... | 2009 | 19296877 |
| wild ducks as long-distance vectors of highly pathogenic avian influenza virus (h5n1). | wild birds have been implicated in the expansion of highly pathogenic avian influenza virus (h5n1) outbreaks across asia, the middle east, europe, and africa (in addition to traditional transmission by infected poultry, contaminated equipment, and people). such a role would require wild birds to excrete virus in the absence of debilitating disease. by experimentally infecting wild ducks, we found that tufted ducks, eurasian pochards, and mallards excreted significantly more virus than common tea ... | 2008 | 18394278 |
| bird schistosomes of wildfowl in the czech republic and poland. | in 2005, we dissected 102 wildfowl from the czech republic and 73 wildfowl from poland including representatives of anseriformes, gruiformes and gaviiformes. schistosome infection was found in a total of 21 (29%) and 23 (23%) birds from poland and the czech republic, respectively. all infected birds belonged to the order anseriformes. the prevalences of nasal and visceral species were, respectively, 22% and 16% in poland and 6% and 19% in the czech republic. four species of schistosomes were fou ... | 2007 | 17886736 |
| using rrt-pcr analysis and virus isolation to determine the prevalence of avian influenza virus infections in ducks at minto flats state game refuge, alaska, during august 2005. | this study describes surveillance for avian influenza viruses (aiv) in the minto flats state game refuge, high-density waterfowl breeding grounds in alaska. five hundred paired cloacal samples from dabbling ducks (northern pintail, mallard, green wing teal, and widgeon) were placed into ethanol and viral transport medium (vtm). additional ethanol-preserved samples were taken. of the ethanol-preserved samples, 25.6% were aiv rna-positive by real-time rt-pcr. the hemagglutinin (ha) and neuraminida ... | 2007 | 17541700 |
| avian influenza virus screening in wild waterfowl in norway, 2005. | the prevalence of influenza a virus infection, and the distribution of different subtypes of the virus, were studied in 604 geese and ducks shot during ordinary hunting 2005. the study was based upon molecular screening of cloacal swabs taken by the hunters. the sampling included the following species: greylag (anser anser), mallard (anas platyrhynchos), wigeon (anas penelope), teal (anas crecca), goosander (mergus merganser), tufted duck (aythya fuligula), common scoter (melanitta nigra), golde ... | 2007 | 17494599 |
| thallium contamination in wild ducks in japan. | although thallium (tl) is toxic to both humans and animals, there is little information on contamination in wildlife. in this study, tl contents in wild ducks in japan were determined. contents of tl in kidney and liver ranged from 0.42 to 119.61 and 0.10 to 33.94 microg/g dry weight, respectively. significant correlations between tl contents in kidney and liver were observed for all dabbling ducks except mallard (anas platyrhynchos); similar correlations were not observed in diving ducks. varia ... | 2005 | 16244083 |
| evaluation of a florida coastal golf complex as a local and watershed source of bioavailable contaminants. | contaminant fate in coastal areas impacted by golf course runoff is not well understood. this report summarizes trace metal, pesticide and pcb residues for colonized periphyton, ruppia maritima (widgeon grass), callinectes sapidus rathbun (blue crabs) and crassostrea virginica gemlin (eastern oyster) collected from areas adjacent to a florida golf course complex which receive runoff containing reclaimed municipal wastewater. concentrations of 19 chlorinated pesticides and 18 pcb congeners were u ... | 2004 | 14972577 |
| selenium removal and mass balance in a constructed flow-through wetland system. | a field study on the removal of se from agricultural subsurface drainage was conducted from may 1997 to february 2001 in the tulare lake drainage district (tldd) of san joaquin valley, california. a flow-through wetland system was constructed consisting of ten 15- x 76-m unlined cells that were continuously flooded and planted with either a monotype or combination of plants, including sturdy bulrush [schoenoplectus robustus (pursh) m.t. strong], baltic rush (juncus balticus willd.), smooth cordg ... | 2003 | 12931913 |
| metal and sediment ingestion by dabbling ducks. | the chemical analysis of intestinal digesta from hunter-killed carcasses or of wildlife scat is a promising means of estimating the exposure of wildlife to those environmental contaminants that, like lead, are poorly absorbed in the digestive tract. when evaluating contaminants at a site, biologists may find the results of this non-destructive approach more straightforward to interpret in terms of exposure to wildlife than would be analyses of soils, sediments, water, or wildlife tissues. to ill ... | 1999 | 10472136 |
| isolation and identification of paramyxoviruses from japanese buntings (emberiza spodocephala) and ducks (anas crecca and anas penelope). | | 1982 | 7109410 |
| serological and virological investigations fo orthomyxovirus in birds in south-east asian area. | we have previously reported that some species of migrating ducks (pintail, mallard, widgeon and falcated teal) possess in their sera antibodies against h antigens of human or avian influenza viruses. such findings have also been reported from other workers, and the appearance of new types of influenza viruses accompanied by outbreaks of new influenza pandemics, or circulation of influenza virus antigens in animals, birds and humans have been discussed on the basis of such findings. recently a nu ... | 1977 | 604133 |
| test of magnetic sensitivity in seven species of european birds using a cardiac nociceptive conditioning procedure. | an attempt was made to show magnetic sensitivity in seven species of european birds captured during their migration. the test was done on the following species: streptopelia turtur (n=8), streptopelia decaocto (n=2), corvus monedula (n=6); one individual of the following: corvus corone c., turdus philomelos, turdus viscivorus, anas penelope. most of the individuals were first subjected to conditioning to a light stimulus. they were then subjected to differential nociceptive conditioning to 100 p ... | 1977 | 24896432 |
| identification and intraspecific genetic diversity of sarcocystis rileyi from ducks, anas spp., in lithuania and finland. | macroscopic sarcocystis cysts were detected in the muscles of 28 mallards ( anas platyrhynchos ), 1 eurasian wigeon ( anas penelope ), and 1 common teal ( anas crecca ) hunted in lithuania and finland. according to the sequences of the 18s rrna gene, 28s rrna gene, and its-1 region, the macrocysts examined from all 30 ducks belonged to sarcocystis rileyi. this parasite was found in the eurasian wigeon and the common teal for the first time. all s. rileyi isolates examined were identical to each ... | 2014 | 24766223 |
| Serosurveillance for Japanese encephalitis virus in wild birds captured in Korea. | Climate change induced by recent global warming may have a significant impact on vector-borne and zoonotic diseases. For example, the distribution of Japanese encephalitis virus (JEV) has expanded into new regions. We surveyed the levels of hemagglutination-inhibition (HI) antibodies against JEV (Family Flaviviridae, genus Flavivirus) in wild birds captured in Korea. Blood samples were collected from 1,316 wild birds including the following migratory birds: Oceanodroma castro (n = 4), Anas formo ... | 2011 | 22122903 |
| a novel avian paramyxovirus (putative serotype 15) isolated from wild birds. | in january 2014, a viral hemagglutinating agent named upo216 was isolated from fecal droppings of wild birds at the upo wetland in south korea during an avian influenza surveillance program. electron microscopy identified the upo216 virus as an avian paramyxovirus (apmv). pathogenicity tests and molecular pathotyping revealed that the virus was avirulent in chickens. the upo216 virus was assigned to a serological group antigenically distinct from known serotypes of apmv (-1, -2, -3, -4, -6, -7, ... | 2017 | 28529504 |
| genetic diversity of avian paramyxovirus type 6 isolated from wild ducks in the republic of korea. | eleven avian paramyxovirus type 6 (apmv-6) isolates from eurasian wigeon ( n=5; anas penelope), mallards ( n=2; anas platyrhynchos), and unknown species of wild ducks ( n=4) from korea were analyzed based on the nucleotide (nt) and deduced amino acid (aa) sequences of the fusion (f) gene. fecal samples were collected in 2010-2014. genotypes were assigned based on phylogenetic analyses. our results revealed that apmv-6 could be classified into at least two distinct genotypes, g1 and g2. the open ... | 2018 | 29517403 |
| lack of virological and serological evidence for continued circulation of highly pathogenic avian influenza h5n8 virus in wild birds in the netherlands, 14 november 2014 to 31 january 2016. | in 2014, h5n8 clade 2.3.4.4 highly pathogenic avian influenza (hpai) viruses of the a/goose/guangdong/1/1996 lineage emerged in poultry and wild birds in asia, europe and north america. here, wild birds were extensively investigated in the netherlands for hpai h5n8 virus (real-time polymerase chain reaction targeting the matrix and h5 gene) and antibody detection (haemagglutination inhibition and virus neutralisation assays) before, during and after the first virus detection in europe in late 20 ... | 2016 | 27684783 |
| influenza a(h5n8) virus isolation in russia, 2014. | in this study, we report the isolation of influenza a(h5n8) virus from a eurasian wigeon (anas penelope) in sakha republic of the russian far east. the strain a/wigeon/sakha/1/2014 (h5n8) has been shown to be pathogenic for mammals. it is similar to the strains that caused outbreaks in wild birds and poultry in southeast asia and europe in 2014. | 2015 | 26306756 |
| wild bird surveillance around outbreaks of highly pathogenic avian influenza a(h5n8) virus in the netherlands, 2014, within the context of global flyways. | highly pathogenic avian influenza (hpai) a(h5n8) viruses that emerged in poultry in east asia since 2010 spread to europe and north america by late 2014. despite detections in migrating birds, the role of free-living wild birds in the global dispersal of h5n8 virus is unclear. here, wild bird sampling activities in response to the h5n8 virus outbreaks in poultry in the netherlands are summarised along with a review on ring recoveries. hpai h5n8 virus was detected exclusively in two samples from ... | 2015 | 25846491 |
| prevalence and potential risk of salmonella enterica in migratory birds from south korea. | salmonella is a type of zoonotic bacteria that represents an economic and public health concern worldwide. difficulties in sample collection from migratory birds mean little is known about their importance as a reservoir of salmonella. the present study evaluated the prevalence and potential risk of salmonella enterica in migratory birds. from 2012-2017, 3661 cloacal swabs from migratory birds were collected in south korea and tested to isolate s. enterica. strains were tested for antimicrobial ... | 2020 | 32980630 |
| meteorological factors affecting the risk of transmission of hpai in miyazaki, japan. | highly pathogenic avian influenza (hpai) outbreaks engender a severe economic impact on the poultry industry and public health. migratory waterfowl are considered the natural hosts of hpai virus, and hpai viruses are known to be transmitted over long distances during seasonal bird migration. bird migration is greatly affected by the weather. many studies have shown the relationship between either autumn or spring bird migration and climate. however, few studies have shown the relationship betwee ... | 2019 | 31565229 |
| waterbird counts on large water bodies: comparing ground and aerial methods during different ice conditions. | the aerial and ground methods of counting birds in a coastal area during different ice conditions were compared. ice coverage of water was an important factor affecting the results of the two methods. when the water was ice-free, more birds were counted from the ground, whereas during ice conditions, higher numbers were obtained from the air. the first group of waterbirds with the smallest difference between the two methods (average 6%) contained seven species: mute swan cygnus olor, whooper swa ... | 2018 | 30038859 |
| wild ducks excrete highly pathogenic avian influenza virus h5n8 (2014-2015) without clinical or pathological evidence of disease. | highly pathogenic avian influenza (hpai) is essentially a poultry disease. wild birds have traditionally not been involved in its spread, but the epidemiology of hpai has changed in recent years. after its emergence in southeastern asia in 1996, h5 hpai virus of the goose/guangdong lineage has evolved into several sub-lineages, some of which have spread over thousands of kilometers via long-distance migration of wild waterbirds. in order to determine whether the virus is adapting to wild waterbi ... | 2018 | 29670093 |
| draft genome sequence of multidrug-resistant stenotrophomonas pavanii bwk1, isolated from mareca penelope feces. | migratory birds serve as vectors by transmitting antibiotic-resistant bacteria across large distances. here, we isolated a multidrug-resistant stenotrophomonas pavanii strain, bwk1, from mareca penelope feces. analysis of the draft genome sequence of the isolated strain indicated that bwk1 harbors a class a beta-lactamase, metallo-beta-lactamase, and several multidrug efflux pumps. | 2018 | 29567744 |
| draft genome sequence of carbapenem-resistant pseudomonas fluorescens strain bwkm6, isolated from feces of mareca penelope. | migratory birds are potential vehicles of antibiotic-resistant bacteria. here, we isolated the multidrug-resistant pseudomonas fluorescens strain bwkm6 from the feces of mareca penelope the strain's draft genome sequence indicates that it harbors a metallo-beta-lactamase, a class c beta-lactamase, and several multidrug efflux pumps. | 2018 | 29567743 |
| draft genome sequence of extended-spectrum beta-lactamase-producing serratia fonticola bwk15 isolated from feces of anas penelope. | migratory birds have been postulated as potential vehicles of antibiotic resistance. here we isolated the extended-spectrum beta-lactamase (esbl)-producing serratia fonticola strain bwk15 from the feces of anas penelope the strain's draft genome sequence indicated that it harbors class a esbl, class c beta-lactamase, and many multidrug efflux pumps. | 2017 | 28983007 |
| avian influenza overview - update on 19 november 2020, eu/eea and the uk. | since 16 october 2020, outbreaks ofhighly pathogenic avian influenza (hpai) viruseshavebeen reported inseveral eu/eeacountries -belgium, denmark, france, germany, ireland, the netherlands, and swedenas well asin the united kingdom.as of 19 november,12pm, 302 hpai a(h5) detections have been reported, with the majority of the detections referring to wild birds (n=281), and a few related to outbreaks in poultry (n=18) and captive birds (n=3). most of the detections in wild birds were in wild waterb ... | 2020 | 33281979 |
| comparative pathogenicity and environmental transmission of recent highly pathogenic avian influenza h5 viruses. | strategies to control spread of highly pathogenic avian influenza (hpai) viruses by wild birds appear limited, hence timely characterization of novel viruses is important to mitigate the risk for the poultry sector and human health. in this study we characterize three recent h5-clade 2.3.4.4 viruses, the h5n8-2014 group a virus and the h5n8-2016 and h5n6-2017 group b viruses. the pathogenicity of the three viruses for chickens, pekin ducks and eurasian wigeons was compared. the three viruses wer ... | 2021 | 33350337 |
| association of wild bird densities around poultry farms with the risk of highly pathogenic avian influenza virus subtype h5n8 outbreaks in the netherlands, 2016. | highly pathogenic (hp) avian influenza viruses (aiv) can spread globally through migratory birds and cause massive outbreaks in commercial poultry. aiv outbreaks have been associated with proximity to waterbodies, presence of waterfowl or wild bird cases near poultry farms. in this study, we compared densities of selected hpai high-risk wild bird species around 7 locations (h farms) infected with hpaiv h5n8 in the netherlands in 2016-2017 to densities around 21 non-infected reference farms. nine ... | 2020 | 32419342 |
| migration patterns and characteristics of eurasian wigeons (mareca penelope) wintering in southwestern japan based on satellite tracking. | understanding migration ecology of eurasian wigeons (mareca penelope) is crucial for effective population management, mitigating conflicts with human, and habitat conservation. the objectives of the present study were 1) to determine their migration patterns of eurasian wigeons in the east asian flyway, and 2) to identify the key breeding and stopover sites. from 2007 to 2016, a total of the 64 wigeons, which wintered in japan, were equipped with satellite transmitters. most eurasian wigeons mig ... | 2019 | 31833320 |
| outbreaks of highly pathogenic avian influenza in zoo birds caused by ha clade 2.3.4.4 h5n6 subtype viruses in japan in winter 2016. | in late 2016, two zoos, one in northern japan and the other in central japan, experienced highly pathogenic avian influenza (hpai) outbreaks, in which multiple zoo birds were infected with h5n6 subtype hpai virus (hpaiv). here, we report an overview of these hpai outbreaks. hpaiv infections were confirmed by virus isolation in three black swans (cygnus atratus) and three snowy owls (bubo scandiacus) kept in the omoriyama zoo hospital. at higashiyama zoo and botanical gardens, following the death ... | 2020 | 31605424 |
| experimental evidence shows the importance of behavioural plasticity and body size under competition in waterfowl. | when differently sized species feed on the same resources, interference competition may occur, which may negatively affect their food intake rate. it is expected that competition between species also alters behaviour and feeding patch selection. to assess these changes in behaviour and patch selection, we applied an experimental approach using captive birds of three differently sized anatidae species: wigeon (anas penelope) (~600 g), swan goose (anser cygnoides) (~2700 g) and bean goose (anser f ... | 2016 | 27727315 |
| deaths among wild birds during highly pathogenic avian influenza a(h5n8) virus outbreak, the netherlands. | during autumn-winter 2016-2017, highly pathogenic avian influenza a(h5n8) viruses caused mass die-offs among wild birds in the netherlands. among the ≈13,600 birds reported dead, most were tufted ducks (aythya fuligula) and eurasian wigeons (anas penelope). recurrence of avian influenza outbreaks might alter wild bird population dynamics. | 2017 | 29148372 |