Publications

morphology of neurosecretory cells in basommatophoran snails homologous with egg-laying and growth hormone-producing cells of lymnaea stagnalis.	in a light and electron microscope study, neurosecretory cells morphologically homologous with the egg-laying hormone-producing caudodorsal cells (cdc) and growth hormone-producing dorsal cells (dc, light green cells) of the freshwater basommatophoran snail lymnaea stagnalis have been found in five genera (seven species) of basommatophora, viz. in lymnaea palustris and lymnaea ovata, in planorbis planorbis and planorbis vortex, in planorbarius corneus, in bulinus truncatus, and in biomphalaria g ...	1987	3623071
[the ecological prerequisites for a worsening of the cercariasis situation in the cities of russia (exemplified by the moscow region)].	conditions favouring the sharp increase of risk to be infected with cercariasis (caused by trematode cercariae trichobilharzia ocellata brumpt, 1931, schistosomatidae) were examined in moscow region (russian federation). main factors of worsening the cercariasis situation are as follows. a) the increase of environment pollution by everyday wastages and the overgrowing with macrophytes in internal water basins of moscow, that makes favourable conditions for the development of molluscs, which are ...	1993	8152847
[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
functional morphology of the neuropeptidergic light-yellow-cell system in pulmonate snails.	the light yellow neuropeptidergic cell system of the basommatophoran snail lymnaea stagnalis is homologous to the r3-r14 system of the opisthobranch aplysia californica, and produces three different neuropeptides. systems homologous to the light yellow cells of lymnaea stagnalis have been investigated morphologically in two basommatophora (lymnaea ovata, bulinus truncatus) and three stylommatophora (helix aspersa, cepaea nemoralis, deroceras reticulatum). to this end, an antibody to synthetic li ...	1994	7954689
variability of fasciola hepatica infection in lymnaea ovata in relation to snail population and snail age.	bimiracidial infections of lymnaea ovata with fasciola hepatica were performed under laboratory conditions to determine the susceptibility of snails from six french populations to trematode infection. in five populations of l. ovata the prevalence of infection in the 1-mm groups ranged between 2.7% and 43.7% at day 35 postexposure; it decreased in the 2-mm snails and was zero in larger groups. in the snails from thenay (periodically polluted brook) the prevalence of f. hepatica infection decreas ...	2000	10669140
genetic variability among cercariae of the schistosomatidae (trematoda: digenea) causing swimmer's itch in europe.	ribosomal dna sequences of the internal transcribed spacer 1 (its1) were obtained from schistosome cercariae responsible for swimmer's itch in europe. two types of its1 (1100 and 1400), which differ by the number of repeated patterns were found among cercariae shedded by lymnaea ovata and l. auricularia (lymnaeidae). a phylogenetic analysis of the its1 region showed that sequences of each type form two well-defined clades. an adult of trichobilharzia regenti isolated from the nasal vessels of an ...	2001	11584754
unusual snail species involved in the transmission of fasciola hepatica in watercress beds in central france.	four freshwater pulmonate species (lymnaea ovata, l. stagnalis, physa acuta, planorbis leucostoma) were living in several watercress beds known for their relationships with human cases of fasciolosis, whereas l. truncatula was never found. the aims of these studies were to determine the prevalence of natural infections with fasciola hepatica in snails and to verify if these species might ensure the full larval development of this trematode (with cercarial shedding) when they were experimentally ...	2002	12116856
family-level covariation between parasite resistance and mating system in a hermaphroditic freshwater snail.	genetic compatibility, nonspecific defenses, and environmental effects determine parasite resistance. host mating system (selfing vs. outcrossing) should be important for parasite resistance because it determines the segregation of alleles at the resistance loci and because inbreeding depression may hamper immune defenses. individuals of a mixed mating hermaphroditic freshwater snail, lymnaea ovata, are commonly infected by a digenetic trematode parasite, echinoparyphium recurvatum. we examined ...	2002	12206245
genotoxic impacts in klaipeda marine port and bŭtinge oil terminal areas (baltic sea).	genotoxic effects were evaluated in the somatic and gonadal cells of bivalve and gastropod molluscs inhabiting different sites of klaipeda port area in lithuania. the occurrence of aneuploidy and polyploidy of cells, meiotic injures, centromere dissociation and fragmented polyploid nuclei as cytogenetic indicators of environmental stressors was assessed in snails lymnaea ovata . the highest level of environmental genotoxicity (in 43.2 and 46.2% of studied cells) was observed in the tissues of sn ...	2002	12408604
fasciola hepatica: an assessment on the vectorial capacity of radix labiata and r. balthica commonly found in belgium.	a previous study conducted in belgium revealed that genetic material of fasciola sp. was present in snail species belonging to the genus radix. here, these snails were collected and identified by dna-based techniques as radix labiata and radix balthica. these two species and galba truncatula (the major intermediate host in europe) were experimentally infected with fasciola hepatica. the resulting metacercariae were fed to rats and the infection was monitored using several techniques. microscopy ...	2007	17697752
diversity of bird schistosomes in anseriform birds in iceland based on egg measurements and egg morphology.	radix balthica is the only freshwater mollusc in iceland that has been found to be the intermediate host of ocellate furcocercariae. infections are common. on average, 4.8% out of almost 7,000 snails examined during 2003-2006 were found to shed cercariae in late summer and autumn. search for adult bird schistosome worms, eggs and miracidia in the intestines and in the nasal cavity of 110 water birds of the orders gaviiformes (one species), podicipediformes (one species) and anseriformes (nine sp ...	2008	18299894
trichobilharzia spp. in natural conditions in annecy lake, france.	annecy lake is a well-known focus of human cercarial dermatitis in france. identification of the parasites, however, was not performed in the past. previous studies suspected two species, trichobilharzia franki and trichobilharzia regenti, based on the presence of parasites in mallards and/or morphological identification of snails emitting ocellate furcocercariae. following a standardized molecular approach, we studied snails and furcocercariae and compared their haplotypes with those deposited ...	2008	18320223
parallel changes in genetic diversity and species diversity following a natural disturbance.	we examined the spatial and temporal variation of species diversity and genetic diversity in a metacommunity comprising 16 species of freshwater gastropods. we monitored species abundance at five localities of the ain river floodplain in southeastern france, over a period of four years. using 190 aflp loci, we monitored the genetic diversity of radix balthica, one of the most abundant gastropod species of the metacommunity, twice during that period. an exceptionally intense drought occurred duri ...	2009	19226317
[significance of electron interactions of fatty acids of phospholipid molecules in the organism adaptation to habitation temperature].	data in the fatty acid composition of muscle tissue phospholipids of some representatives of gastropod molluscs (gastropoda) have been presented for the first time. in the lake phytophagues lymnaea stagnalis and lymnaea ovata the long-chained c22-acid was not detected, whereas in the predator common whelk buccinum undatum, c22:6omega3 was present. comparison of absorption spectra (240-720 nm) of lipid extracts of the studied invertebrates and of rat has been performed. the obtained data are disc ...	2009	19764632
[lipids composition and speed of energy metabolism in gastropods].	lipid composition of digestive gland and pedal muscle of two northern freshwater pulmonate snails lymnaea stagnalis and lymnaea ovata and three marine prosobranch gastropods littorina obtusata, littorina littorea, buccinum undatum from the white sea was studied. the species differ in ecology, particularly in trophic nabits and motor activity. the content of triacilglycerides both in digestive gland and pedal was higher in littoral dwellers littorina the activity of which depends on the tide leve ...	2009	19140337
the complete mitochondrial genome of radix balthica (pulmonata, basommatophora), obtained by low coverage shot gun next generation sequencing.	a 454-flx low-coverage sequencing approach was used to assemble the mitochondrial genome of radix balthica. the mtdna sequence is 13,993 nt long and contains 37 genes (13 protein coding genes, two rrnas and 22 trnas). four genes, the 12s rna and seven trnas are transcribed in reverse order. the sequence is at rich (71.3%), similar to other basommatophoran species. comparison with the most closely related mt genomes available (biomphalaria glabrata and biomphalaria tenagophila) revealed identical ...	2010	20875865
a genetic basis for intraspecific differences in developmental timing?	heterochrony, altered developmental timing between ancestors and their descendents, has been proposed as a pervasive evolutionary feature and recent analytical approaches have confirmed its existence as an evolutionary pattern. yet, the mechanistic basis for heterochrony remains unclear and, in particular, whether intraspecific variation in the timing of developmental events generates, or has the potential to generate, future between-species differences. here we make a key step in linking hetero ...	2011	23016938
short read illumina data for the de novo assembly of a non-model snail species transcriptome (radix balthica, basommatophora, pulmonata), and a comparison of assembler performance.	until recently, read lengths on the solexa/illumina system were too short to reliably assemble transcriptomes without a reference sequence, especially for non-model organisms. however, with read lengths up to 100 nucleotides available in the current version, an assembly without reference genome should be possible. for this study we created an est data set for the common pond snail radix balthica by illumina sequencing of a normalized transcriptome. performance of three different short read assem ...	2011	21679424
occurrence of diplostomum pseudospathaceum niewiadomska, 1984 and d. mergi dubois, 1932 (digenea: diplostomidae) in danish freshwater snails: ecological and molecular data.	freshwater pulmonate snails from three locations in lake furesø north of copenhagen were screened for infection with furcocercariae (by shedding in the laboratory) and recovered parasite larvae were diagnosed by molecular methods (by performing pcr of rdna and sequencing the internal transcribed spacer [its] region). overall prevalence of infection in snails was 2%. recovered cercariae from lymnaea stagnalis (linnaeus) were diagnosed as diplostomum pseudospathaceum niewiadomska, 1984 (prevalence ...	2013	23724738
trichobilharzia mergi sp. nov. (trematoda: digenea: schistosomatidae), a visceral schistosome of mergus serrator (l.) (aves: anatidae).	parasitological investigations on red-breasted mergansers (mergus serrator l.) in iceland revealed digenean flukes of the family schistosomatidae. adult worms were detected in blood vessels of the large intestine and eggs were deposited in the mucosa and surrounded by granulomatous reactions. traditional morphological methods showed that the flukes have very slender filiform bodies, males are equipped with a short gynaecophoric canal and both suckers and spatulate ends are present on each sex. a ...	2013	23501058
a novel application of motion analysis for detecting stress responses in embryos at different stages of development.	motion analysis is one of the tools available to biologists to extract biologically relevant information from image datasets and has been applied to a diverse range of organisms. the application of motion analysis during early development presents a challenge, as embryos often exhibit complex, subtle and diverse movement patterns. a method of motion analysis able to holistically quantify complex embryonic movements could be a powerful tool for fields such as toxicology and developmental biology ...	2013	23374982
effects of bisphenol a on different trophic levels in a lotic experimental ecosystem.	bisphenol a (bpa) is commonly used by manufacturers and can be found in many aquatic ecosystems. data relative to bpa ecotoxicity are only available for studies in laboratory conditions on macro-invertebrates and fish. there is thus a lack of information for other trophic levels such as macrophytes. moreover, the impacts of bpa within an ecosystem context, i.e. with populations from different trophic levels studied at long term in environmental conditions, have never been assessed. we carried ou ...	2013	24177219
adaptation of lymnaea fuscus and radix balthica to fasciola hepatica through the experimental infection of several successive snail generations.	high prevalence of fasciola hepatica infection (>70%) was noted during several outbreaks before the 2000s in several french farms where galba truncatula is lacking. other lymnaeids such as lymnaea fuscus, l. glabra and/or radix balthica are living in meadows around these farms but only juvenile snails can sustain complete larval development of f. hepatica while older snails were resistant. the low prevalence of infection (<20%) and limited cercarial production (<50 cercariae per infected snail) ...	2014	24986589
trichobilharzia anseri n. sp. (schistosomatidae: digenea), a new visceral species of avian schistosomes isolated from greylag goose (anser anser l.) in iceland and france.	parasitological investigations carried out on birds in iceland and france highlight the presence of four species of avian schistosomes from greylag geese (anser anser l.): the european nasal species trichobilharzia regenti and three visceral species, among which an unknown species isolated from blood vessels of the large intestine and liver. morphological and molecular analyzes of different parasite stages (eggs, adults) revealed new species of trichobilharzia genus – trichobilharzia anseri sp. ...	2015	26070888
confirmation of galba truncatula as an intermediate host snail for calicophoron daubneyi in great britain, with evidence of alternative snail species hosting fasciola hepatica.	fasciola hepatica is a highly prevalent parasite infecting livestock in great britain, while calicophoron daubneyi is an emerging parasite within the gb livestock industry. both f. hepatica and c. daubneyi require an intermediate host snail to complete their life-cycles and infect ruminants; however, there has been no confirmation of the intermediate host of c. daubneyi in gb, while there are questions regarding alternative host snails to galba truncatula for f. hepatica. in this study, pcr was ...	2015	26695066
the importance of the mining subsidence reservoirs located along the trans-regional highway in the conservation of the biodiversity of freshwater molluscs in industrial areas (upper silesia, poland).	the objectives of the survey were to analyse the structure of the mollusc communities in the mining subsidence reservoirs that were created as a result of land subsidence over exploited hard coal seams and to determine the most predictive environmental factors that influence the distribution of mollusc species. the reservoirs are located in urbanised and industrialised areas along the trans-regional highway, which has a high volume of vehicular traffic. they all have the same sources of supply b ...	2017	26005225
swimmer's itch in belgium: first recorded outbreaks, molecular identification of the parasite species and intermediate hosts.	cercarial dermatitis or swimmer's itch is a skin condition in humans due to the larval forms of bird schistosomes of some species of the genus trichobilharzia. the life cycle of these schistosomes requires freshwater snails (intermediate host) and waterfowl (definitive host). repeated exposures to cercariae can lead to skin sensitization with the induction of pruritic skin lesions.	2017	28112601
molecular analyses reveal high species diversity of trematodes in a sub-arctic lake.	to identify trematode diversity and life-cycles in the sub-arctic lake takvatn, norway, we characterised 120 trematode isolates from mollusc first intermediate hosts, metacercariae from second intermediate host fishes and invertebrates, and adults from fish and invertebrate definitive hosts, using molecular techniques. phylogenies based on nuclear and/or mtdna revealed high species richness (24 species or species-level genetic lineages) and uncovered trematode diversity (16 putative new species) ...	2017	28315362