| a study on the role of birds in the spread of infections. | during three expeditions undertaken in march 1977 to june 1978, 797 cloacal swabs were collected from birds of 54 species. seven salmonella strains of six serotype were isolated from larus ridibundus (five strains), corvus frugilegus and acrocephalus schoenobaenus (one each). four strains of influenza a (hav2 na4v) virus were isolated from larus ridibundus. for the first time in czechoslovakia, two strains of yucaipa paramyxovirus were isolated, both of them from troglodytes troglodytes. these r ... | 1979 | 575902 |
| song as an indicator of parasitism in the sedge warbler. | we studied female choice and reproductive success in a marked population of sedge warblers acrocephalus schoenobaenus, from 1995 to 1996. three genera of parasitic blood protozoans, namely haemoproteus sp. trypanosoma sp. plasmodium sp., were identified from blood samples taken from all breeding adults. relatively high prevalence values of 19.5% in 1995 and 37.5% in 1996 were associated with increased levels of white blood cells relative to the number of red blood cells. compared with nonparasit ... | 1999 | 10049469 |
| hepatozoon kabeenin. sp. (protozoa: apicomplexa; hemogregarina) from the sedge warbler, acrocephalus schoenobaenus (aves: passeriformes). | new species, hepatozoon kabeeni was described in blood of sedge warbler acrocephalus schoenobaenus. the parasite species was detected in two populations of sedge warbler in ne and sw parts of poland. hepatozoon kabeeni was found respectively in 36.0% (n=25) and 28.6% (n=28) of individuals. | 2000 | 16886333 |
| serologic survey of birds for west nile flavivirus in southern moravia (czech republic). | a serosurvey for west nile virus (wnv) was carried out in 54 domestic birds (geese and ducks bred on fishponds) and 391 wild birds representing 28 migratory and resident species, using a plaque-reduction neutralization microtest with vero cells and egyptian topotype eg-101 strain as test virus. the birds were sampled in the south-moravian fishpond ecosystem between 2004 and 2006. antibodies to wnv were not detected in domestic waterfowl, but 23 (5.9%) free-living birds of 10 species showed a pos ... | 2008 | 18454599 |
| spatial and temporal differences in the blood parasite fauna of passerine birds during the spring migration in bulgaria. | species composition and prevalence of the blood parasites of three migratory acrocephalus species of warblers (acrocephalus arundinaceus, acrocephalus scirpaceus and acrocephalus schoenobaenus) were studied during spring period in bulgaria. for each of the studied species, we compared the parasite fauna during their spring migration at three study sites in search of infection patterns in time and space. spatial differences were registered in the blood parasites and their prevalence for two of th ... | 2009 | 19190934 |
| the importance of ixodes arboricola in transmission of rickettsia spp., anaplasma phagocytophilum, and borrelia burgdorferi sensu lato in the czech republic, central europe. | abstract wild birds are known to be a reservoir of infectious disease agents and disseminatory hosts of ticks. the purpose of this work was to obtain information about the occurrence of rickettsial, anaplasmal, and borrelial infections in some ticks that parasitize wild birds in the czech republic. a total of 549 subadult ticks of three species ixodes arboricola (75.0%), ixodes ricinus (23.1%), and haemaphysalis concinna (1.8%) were collected from 20 species of birds (passeriformes). rickettsiae ... | 2011 | 21612531 |
| importation of hyalomma marginatum, vector of crimean-congo haemorrhagic fever virus, into the united kingdom by migratory birds. | hyalomma marginatum ticks are an important vector of crimean-congo haemorrhagic fever virus which can result in a severe and potentially fatal disease in humans. given the continued emergence of clinical cases in eurasia and focalised upsurges of h. marginatum populations in europe, it seemed prudent to assess the potential of this vector species to be introduced into the united kingdom. immature forms of h. marginatum are frequent ectoparasites of passerine birds many of which migrate from afri ... | 2012 | 22300969 |
| ticks of the hyalomma marginatum complex transported by migratory birds into central europe. | hyalomma ticks are well-known vectors transmitting infectious agents, which can result in severe and potentially fatal diseases in humans. migratory birds may carry infected ticks over long distances. here, we report on records of ticks of the h. marginatum complex in birds from central europe during the spring migration in 2008-2012. a total of 1172 birds belonging to 32 species, 16 families, and 3 orders was examined for ticks. sixteen individuals of 6 passerine species were found to transport ... | 2014 | 24877976 |
| testing genotyping strategies for ultra-deep sequencing of a co-amplifying gene family: mhc class i in a passerine bird. | characterization of highly duplicated genes, such as genes of the major histocompatibility complex (mhc), where multiple loci often co-amplify, has until recently been hindered by insufficient read depths per amplicon. here, we used ultra-deep illumina sequencing to resolve genotypes at exon 3 of mhc class i genes in the sedge warbler (acrocephalus schoenobaenus). we sequenced 24 individuals in two replicates and used this data, as well as a simulated data set, to test the effect of amplicon cov ... | 2016 | 27762049 |
| molecular analysis of faecal samples from birds to identify potential crop pests and useful biocontrol agents in natural areas. | wild habitats adjoining farmland are potentially valuable sources of natural enemies, but also of pests. here we tested the utility of birds as 'sampling devices', to identify the diversity of prey available to predators and particularly to screen for pests and natural enemies using natural ecosystems as refugia. here we used pcr to amplify prey dna from three sympatric songbirds foraging on small invertebrates in phragmites reedbed ecosystems, namely the reed warbler (acrocephalus scirpaceus), ... | 2015 | 25572526 |
| testing avian compass calibration: comparative experiments with diurnal and nocturnal passerine migrants in south sweden. | cue-conflict experiments were performed to study the compass calibration of one predominantly diurnal migrant, the dunnock (prunella modularis), and two species of nocturnal passerine migrants, the sedge warbler (acrocephalus schoenobaenus), and the european robin (erithacus rubecula) during autumn migration in south sweden. the birds' orientation was recorded in circular cages under natural clear and simulated overcast skies in the local geomagnetic field, and thereafter the birds were exposed ... | 2014 | 25505150 |
| molecular characterization of putative hepatozoon sp. from the sedge warbler (acrocephalus schoenobaenus). | we characterized partial sequences of 18s rdna from sedge warblers infected with a parasite described previously as hepatozoon kabeeni. prevalence was 47% in sampled birds.we detected 3 parasite haplotypes in 62 sequenced samples from infected animals. in phylogenetic analyses, 2 of the putative hepatozoon haplotypes closely resembled lankesterella minima and l. valsainensis. the third haplotype grouped in a wider clade composed of caryospora and eimeria. none of the haplotypes showed resemblanc ... | 2013 | 23363535 |
| territory choice during the breeding tenure of male sedge warblers. | a territorial male can shift the location of its territory from year to year in order to increase its quality. the male can base its decision on environmental cues or else on its breeding experiences (when territory shift is caused by breeding failure in previous seasons). we tested these possible mechanisms of territory choice in the sedge warbler (acrocephalus schoenobaenus), a territorial migrating passerine that occupies wetlands. this species bases its territory choices on an environmental ... | 2011 | 22162903 |
| malarial infections in sedentary and migratory passerine birds in israel: description of new species. | our objective was to investigate the diversity of plasmodium species in birds of the rift valley section in israel. plasmodium merulae corradetti & scanga, 1973 was previously reported in blackbirds (turdus merula linnaeus, 1758), that are resident. we also report and describe three other species and seven new species of plasmodium from migratory birds in the north, and from eilat at the southernmost tip of the jordan valley. new species are: plasmodium lusciniae sp. n., plasmodium alloreticulat ... | 2010 | 22320017 |
| sex- and age-related differences in the timing and body condition of migrating reed warblers acrocephalus scirpaceus and sedge warblers acrocephalus schoenobaenus. | the migration strategies of birds may vary strongly between species and also between age and/or sex groups. we studied the autumn migration and body condition of molecularly sexed reed warblers acrocephalus scirpaceus and sedge warblers acrocephalus schoenobaenus (211 and 208 ind., respectively) at a stopover site on lake druzno, northern poland, in 2008. immature male reed warblers were caught significantly later than females (median dates 9 days later), but in the sedge warbler, both sexes of ... | 2010 | 20372871 |
| migratory orientation of sedge warblers (acrocephalus schoenobaenus) in relation to eating and exploratory behaviour. | orientation tests performed with emlen funnels show much variation. this scatter in responses can be partially explained by considering the birds' personalities. we studied a passerine migrant, the sedge warbler (acrocephalus schoenobaenus), on autumn passage at kalimok biological station, bulgaria. birds caught in the morning were kept in cages with known and regularly controlled amounts of food. in the evening they were tested for orientation, the next morning they were observed for 3 min in a ... | 2009 | 19635535 |
| sexual selection and individual genetic diversity in a songbird. | here, we report for the first time, to our knowledge, a strong correlation between a measure of individual genetic diversity and song complexity, a sexually selected male trait in sedge warblers, acrocephalus schoenobaenus. we also find that females prefer to mate with males who will maximize this diversity in individual progeny. the genetic diversity of each offspring is further increased by means of nonrandom fertilization, as we also show that the fertilizing sperm contains a haplotype more g ... | 2003 | 14667396 |
| song as an indicator of male parental effort in the sedge warbler. | repertoire size has been found to be a sexually selected trait in a number of bird species, although the advantages of mating with a male who possesses a complex song remain unclear. we studied the potential role of song as an indicator of male parental effort in the sedge warbler acrocephalus schoenobaenus. the male provisioning rate was used as a measure of male parental effort and was found to increase with nestling age and brood size. when controlling for chick age, brood size and other vari ... | 2000 | 10722211 |
| fuel deposition of three passerine bird species along the migration route. | the rate at which migrant birds replenish their energy stores at intermittent stopovers largely determines overall migration speed, the manner in which migration proceeds and success of migration. in this study, data on the fuel deposition rate (fdr) of three long-distance migrants from 17 ringing sites along their autumn migration route were used to examine: (1) effects of endogenous factors on fdr, and (2) how relationships between exogenous factors and fdr affect the organisation of migration ... | 2000 | 28308281 |
| habitat use and body mass regulation among warblers in the sahel region during the non-breeding season. | migratory birds face significant challenges across their annual cycle, including occupying an appropriate non-breeding home range with sufficient foraging resources. this can affect demographic processes such as over-winter survival, migration mortality and subsequent breeding success. in the sahel region of africa, where millions of migratory songbirds attempt to survive the winter, some species of insectivorous warblers occupy both wetland and dry-scrubland habitats, whereas other species are ... | 2014 | 25426716 |
| chewing lice from wild birds in northern greece. | greece represents an important area for wild birds due to its geographical position and habitat diversity. although the bird species in greece are well recorded, the information about the chewing lice that infest them is practically non-existent. thus, the aim of the present study was to record the species of lice infesting wild birds in northern greece and furthermore, to associate the infestation prevalence with factors such as the age, sex, migration and social behaviour of the host as well a ... | 2017 | 28711426 |
| extreme mhc class i diversity in the sedge warbler (acrocephalus schoenobaenus); selection patterns and allelic divergence suggest that different genes have different functions. | recent work suggests that gene duplications may play an important role in the evolution of immunity genes. passerine birds, and in particular sylvioidea warblers, have highly duplicated major histocompatibility complex (mhc) genes, which are key in immunity, compared to other vertebrates. however, reasons for this high mhc gene copy number are yet unclear. high-throughput sequencing (hts) allows mhc genotyping even in individuals with extremely duplicated genes. this hts data can reveal evidence ... | 2017 | 28679358 |
| spatial behavior of medium and long-distance migrants at stopovers studied by radio tracking. | spatial behavior and range of movements at daytime stopovers of three species of passerine nocturnal migrants (european robins, sedge warbler, and pied flycatchers) were studied by radio tracking. both in spring and in fall, 94% of european robins remained within 350-400 m of their landing location (n = 51 and 65, respectively). movements of robins became more area-restricted with more time spent at stopover. sedge warblers never moved more than 335 m (n = 12). a reason for this could be their r ... | 2005 | 16055857 |
| song and the song control pathway in the brain can develop independently of exposure to song in the sedge warbler. | previous studies have shown that female sedge warblers choose to mate with males that have more complex songs, and sexual selection has driven the evolution of both song complexity and the size of the major song control area (hvc) in the brain. in songbirds, learning from conspecifics plays a major role in song development and this study investigates the effects of isolation and exposure to song on song structure and the underlying song control system. sibling pairs of hand-reared nestling sedge ... | 2002 | 12573065 |
| stopover durations of three warbler species along their autumn migration route. | in migrating birds, the success of migration is determined by stopover duration, the most important factor determining overall speed of migration, and fuel deposition rate. however, very little is known about stopover durations of small migrant birds, because appropriate methods for data analysis were lacking until recently. we used a new capture-recapture analysis to estimate stopover durations of 1st-year reed warblers acrocephalus scirpaceus, sedge warblers a. schoenobaenus and garden warbler ... | 2001 | 28547471 |
| song, sexual selection, and a song control nucleus (hvc) in the brains of european sedge warblers. | female sedge warblers select males that have more complex songs as mates. this study tests two predictions concerning hvc, a telencephalic nucleus that is essential for song learning and production: first, that males with more complex songs will have a larger hvc, and second that males who pair successfully will have a larger hvc than unpaired males. data on song composition and pairing status were collected from wild sedge warblers breeding in hungary. we found significant positive correlations ... | 2000 | 10880127 |
| alkhurma hemorrhagic fever virus rna in hyalomma rufipes ticks infesting migratory birds, europe and asia minor. | alkhurma hemorrhagic fever virus rna was detected in immature hyalomma rufipes ticks infesting northward migratory birds caught in the north mediterranean basin. this finding suggests a role for birds in the ecology of the alkhurma hemorrhagic fever virus and a potential mechanism for dissemination to novel regions. increased surveillance is warranted. | 2018 | 29664386 |
| development of trypanosoma everetti in culicoides biting midges. | trypanosoma species (trypanosomatida, kinetoplastea) are almost exclusively heteroxenous flagellated parasites, which have been extensively studied as the causative agents of severe trypanosomiasis in humans and domestic animals. however, the biology of avian trypanosomes remains insufficiently known, particularly in wildlife, despite information that some species might be pathogenic and affect the fitness of intensively infected individuals. avian trypanosomes are cosmopolitans. due to regular ... | 2020 | 32473117 |
| blood parasites shape extreme major histocompatibility complex diversity in a migratory passerine. | pathogens are one of the main forces driving the evolution and maintenance of the highly polymorphic genes of the vertebrate major histocompatibility complex (mhc). although mhc proteins are crucial in pathogen recognition, it is still poorly understood how pathogen-mediated selection promotes and maintains mhc diversity, and especially so in host species with highly duplicated mhc genes. sedge warblers (acrocephalus schoenobaenus) have highly duplicated mhc genes, and using data from high-throu ... | 2018 | 29654666 |