| [human cercariasis caused by schistosomatid larvae from aquatic birds in the narochanka river recreational area of byelarus]. | the reasons of the dramatically aggravated cercarial situation were examined in the naroch lake area (minsk province, byelorussia). the incidence of infection with cercariae of the family schistosomatidae trematodes in 8 mollusk species of the genera lymnaea, planorbarius, planorbis, anisus which were nonuniformly distributed in the upper littoral were studied. the snails form mosaic congestions of various density (from solitary individuals in a 50-100 m2 area to hundreds per m2), which is assoc ... | 1995 | 7476691 |
| [the ecological prerequisites for the spread of schistosomal dermatitis (cercariasis) in moscow and the moscow area]. | cases of schistosomiasis (cercarial dermatitis) were recorded in humans in moscow in 1991. the authors analyze the ecologic conditions conducive to dissemination of cercariasis in 17 natural and artificial water bodies of moscow and the moscow region. they point out that high contamination of the water bodies with organic communal wastes and an abundant overgrowth of macrophytes favor the development of molluscs, intermediate hosts of schistosoma, and promote the increase of the populations ther ... | 1994 | 8015515 |
| survival of bird schistosomes in mammalian lungs. | bird schistosome cercariae have a low specificity to vertebrate skin and, thus, they are also able to penetrate into mammals. as a consequence, a hypersensitive skin response-cercarial dermatitis-develops. it was thought that the parasites die in the skin soon after penetration. our results on trichobilharzia szidati and bilharziella polonica in the non-specific murine host confirm that some of the penetrating bird schistosomes may fully transform to schistosomula and migrate to the lungs. they ... | 2000 | 10675746 |
| is there a potential danger of "swimmer's itch in poland? | tests with cercariae of trichobilharzia szidati (neuhaus, 1952) and bilharziella polonica (kowalewski, 1895) from naturally parasitised host snails from lake jeziorak in north poland were carried out on human volunteers under laboratory conditions. only t. szidati was capable of causing the symptoms of "swimmer's itch". in the experiment with b. polonica no symptoms of dermatitis were observed either after the first or second exposure. | 2003 | 12474045 |
| infection of snails with bird schistosomes and the threat of swimmer's itch in selected polish lakes. | studies of selected species of lymnaeidae and planorbidae showed that infection with bird schistosomes occurred in 14 of the 26 polish lakes studied. in planorbarius corneus larvae of bilharziella polonica were found, and in lymnaea stagnalis and radix auricularia larvae of trichobilharzia ocellata. in spite of their comparatively low prevalence, cercariae, potentially pathogenic to humans, may have caused dermatitis in patients registered in one of the regions under study. the low prevalence of ... | 2004 | 14598171 |
| seasonal morphological variations in bird schistosomes. | the present work is a contribution to the systematics of bilhorziello and dendritobilharzio. wildfowl was killed in hunting seasons or found dead in champagne-ardenne region, france, and autopsied with focus on schistosomes. seven anas plotyrhynchos (mallards), one ardeo cinerea (grey heron) and two cygnus olor (mute swans) were parasitized by bilharziella. one c. olor was parasitized by dendritobilharzia. depending on season and hosts, various morphological forms of bilharziello suggesting seve ... | 2006 | 17007212 |
| 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 |
| qualitative and quantitative behavioral traits in a community of furcocercariae trematodes: tools for species separation? | many trematode cercariae show distinct behavioral features, which have commonly been used in species identification in combination with morphological characteristics. however, information regarding cercariae behavior has often not been quantified in detail, or it is scattered in the literature, which is why the appropriate level of precision in behavioral identity, particularly in groups of cercariae species showing considerable morphological overlap, has not been properly established. in this s ... | 2007 | 18314675 |
| taxonomic structure of digenea in wild ducks (anatinae) from west pomerania. | parasitic fauna of birds connected with water environment, including digeneans, is relatively well researched in poland. the exception, however, is west pomerania, where those birds were not frequent objects of parasitological research until recently. the purpose of this work is to determine the taxonomic structure of the digenea, parasitising wild ducks living in west pomerania. the research material was 124 individuals of wild anatinae (anseriformes) belonging to 8 species: anas strepera, a. c ... | 2008 | 18702318 |
| avian schistosomes in french aquatic birds: a molecular approach. | the prevalence of human cercarial dermatitis (hcd) caused by bird schistosomes appears to be increasing in france, in light of the impact of tourism combined with high densities of wild aquatic hosts in freshwater areas. the present work expands our knowledge of schistosome systematics by including samples of bird schistosomes collected from their natural hosts in france. heads (318) and viscera (81) of aquatic birds belonging to 16 species from five orders, collecting during the hunting seasons ... | 2009 | 19356266 |
| detection of european trichobilharzia schistosomes ( t. franki , t. szidati , and t. regenti ) based on novel genome sequences. | the most frequent causative agents of cercarial dermatitis in europe are the avian schistosomes of the genus trichobilharzia . they preferably parasitize birds of the anatidae. trichobilharzia spp. schistosomes are also able to penetrate mammalian skin, posing a health risk to mammals, including humans. currently several loci from nuclear and mitochondrial genomes are determined for european species of trichobilharzia . among them there is 1 genome sequence, tosau3a, which is suitable for detect ... | 2010 | 20677938 |
| [expression of genes encoding defense factors in the snail planorbarius corneus (gastropoda, pulmonata) infested with trematodes]. | because many species of gastropods are intermediate hosts for trematodes, these molluscs are often used as model-organisms in the studies of invertebrate immune system. revealing of the ways in which the defense factors functioning became possible due to the use of the methods of molecular biology. contemporary molecular methods allow analyzing the defense factors allocations and levels of their expression. we investigated the expression of genes encoding defense factors in gastropods by the exa ... | 2010 | 21061590 |
| the neuro-muscular system in fresh-water furcocercaria from belarus. i schistosomatidae. | the neuro-muscular system (nms) in cercariae of the family schistosomatidae from belarus was studied with immunocytochemical methods and confocal scanning laser microscopy. the specimens of bilharziella polonica were compared with trichobilharzia szidati and trichobilharzia franki. the patterns of f-actin in the musculature, 5-ht-immunoreactive (ir), fmrfamide-ir neuronal elements and α-tubulin-ir in sensory receptors and nerves were investigated. no indications of structural differences in the ... | 2011 | 21614541 |
| [polymorphism of the coxl mtdna gene from cercarian isolates of the avian schistosome bilharziella polonica (trematoda: schistosomatidae) from belarussian lakes]. | we have studied the phylogeographic structure of avian schistosomes bilharziella polonica (class trematoda, family schistosomatidae), parasites of 18 molluscs planorbius corneus (family planorbidae) from three belarussian lakes. low nucleotide (pi<0.5%) and high haplotype (h=85.6%) diversity of the gene encoding the cytochrome c oxidase first subunit (coxl) was found on the part of the species range studied. the phylogeographic reconstructions showed that the sample examined consists of at least ... | 2011 | 21786674 |
| the neuromuscular system in freshwater furcocercaria from belarus. ii diplostomidae, strigeidae, and cyathocotylidae. | the neuromuscular system (nms) in cercariae of diplostomum pseudospathaceum, cotylurus szidati, australapatemon burti, holostephanus volgensis, and paracoenogonimus ovatus was studied with immunocytochemical methods and confocal scanning laser microscopy. the patterns of f-actin in the musculature, 5-ht immunoreactive (-ir), fmrf-amide-ir neuronal elements, and a-tubulin-ir in sensory receptors were investigated. the nms in the five species studied were compared with each other and with three sp ... | 2011 | 21748349 |
| having bird schistosomes in mind-the first detection of bilharziella polonica (kowalewski 1895) in the bird neural system. | nasal bird schistosomes can cause bilharziosis in birds and have the potential to cause swimmer's itch in humans. we determined the prevalence of bird schistosomes in 106 mallards (anas plathyrhynchos) from 11 water sources in germany from 2014. dissections were performed focusing on parasitic infections of the neural system. infections with trichobilharzia regenti (horák et al. 1998) were found in 21% of the birds (n = 22), whereas bilharziella polonica (kowalewski 1895) were found between the ... | 2017 | 28012027 |
| digenean communities in the tufted duck [aythya fuligula (l., 1758)] and greater scaup [a. marila (l., 1761)] wintering in the north-west of poland. | a total of 124 specimens of the tufted duck, aythya fuligula, and 63 greater scaup, a. marila, were examined for digenean parasites. both duck species, which overwinter in a coastal lake connected with the southern baltic (north-west poland) were found to support amblosoma exile, cyathocotyle prussica, paracoenogonimus ovatus, australapatemon minor, cotylurus cornutus, echinoparyphium recurvatum, echinostoma revolutum and notocotylus attenuatus. in addition, the tufted duck hosted hypoderaeum co ... | 2013 | 22677200 |
| symptoms of behavioural anapyrexia--reverse fever as a defence response of snails to fluke invasion. | the subject of the research was the thermal preferences of planorbarius corneus individuals infected by larvae of digenetic trematodes. snails were obtained over two consecutive years, 2009 and 2010, from 10 water bodies located in central poland. the relationship between the seasons and the occurrence of patent invasions in hosts found in the shore-zone of lakes was observed. behavioural experiments conducted on p. corneus individuals placed in a thermal gradient demonstrated that parasite infe ... | 2012 | 22244795 |