the helminths in the gut of perch (perca fluviatilis l.) in a small oligotrophic lake in southern norway.a total of 311 perch were examined for gut parasites during the period from april 1972 to december 1973. four different metazoan parasites were found; proteocephalus percae (müller, 1780), bunodera luciopercae (müller, 1776), acanthocephalus lucii müller, 1776 and camallanus lacustris zoega, 1776. b. luciopercae and p. percae exhibited similar seasonal cycles in appearance and abundance. they were both absent from the fish population during june/july. a. lucii and c. lacustris on the other hand ...1978706549
[an attempt to devise a hypothesis of the seasonal maturation of helminths in the definitive host--the fish].the seasonal maturation of four species of helminths, acanthocephalus clavula, a. lucii, camallanus lacustris and bunodera luciopercae, from the perch perca fluviatilis is briefly described. it is noted that a. clavula, a. lucii and c. lacustris are found as mature worms in the intestine of the fish host throughout the year, whereas in bunodera luciopercae there is a limited season of maturation. as a result of experimental studies it is suggested that b. luciopercae uses host gonadotrophin to i ...19892812856
[role of the daily food ration of perch fry (perca fluvialis) in infestation with bunodera luciopercae (trematoda, allocreadiidae)].the list of intermediate hosts of bunodera luciopercae is given. in lake syamozero they are represented by crustaceans heterocope, ophryoxus. data on their role in the ration of juvenile perch are given. diurnal dynamics of the ratio between infected and noninfected plankton in feeding and the process of the formation of fish infection have been studied.19872956562
[the spatial structure of the imaginal hemipopulation of bunodera luciopercae (trematoda: bunoderidae) in the rybinsk reservoir].the spatial structure of the hemipopulation of the trematode bunodera luciopercae has been studied. the seasonal dynamics of the parasite number in the perch, ruff and sander was registered. the original distribution of the parasites in populations of percid fishes is an overdispersion and well tested by the gamma-model.19979304101
seasonal differences in infestation of the perch perca fluviatilis l. from lake constance with digenean trematodes.perch (perca fluviatilis l.) caught in lake constance every 2 months over a period of 3 years below six towns or villages (langenargen, nonnenhorn, rorschach, romanshorn, bottighofen, and the lake of uberlingen) were examined for parasites. in contrast to diplostomum spathaceum (rudolphi, 1819) and tylodelphys clavata (nordmann, 1832), bunodera luciopercae (müller, 1776) and ichthyocotylurus variegatus (creplin, 1825) showed marked seasonal differences. these differences were influenced by vario ...19979342744
enteric helminths of perch (perca fluviatilis l.) and yellow perch (perca flavescens mitchill): stochastic or predictable assemblages?component communities of perch (perca fluviatilis l) in eurasia and the north american yellow perch (perca flavescens mitchill) were examined to determine the nature of their parasite communities. the scale of this investigation is continental and includes data collected across the distribution of each host species. data were compiled from the literature and from 5 sample sites in north america. four parasite species were found to occur frequently in the helminth component communities of p. flav ...199910577711
perch (perca fluviatilis l.) parasites reflect ecosystem conditions: a comparison of a natural lake and two acidic reservoirs in finland.parasite communities of perch were studied in a natural lake (vetämäjärvi) and two reservoirs (the kyrkösjärvi and liikapuro reservoirs) located in western finland. all water bodies studied are small, shallow and humic. however, the reservoirs are more acidic than the lake (ph 5.9 and 5.3 vs. 6.4). altogether, 18 parasite species were found, but the component communities were reduced in the harsh conditions of the reservoirs (12 and six species) as compared with the lake (17 species). in additio ...200011428333
[study of fecundity of bunodera luciopercae (trematoda: bunoderidae)].the seasonal dynamics of the maturation of trematode bunodera luciopercae was investigated in 1992-1998. the actual fecundity of adult helminths from the ruff, perch, sander and volga pike-perch in the rybinsk reservoir was registered in the end of spring. the accumulation process of eggs reflected the host alteration and depended on the food ration, body length and sex of hosts.200111871257
[seasonal variations of the localization of the bunodera luciopercae marites (trematoda: bunoderidae) in three species of perch fishes].distribution of bunodera luciopercae marites in the intestine of the fuff, sande and perch were studied in the rybinsk reservoir. for the fuff and perch fry, except three summer months, the more proportion of helminths was observed in the posterior region of the intestine. because of a continuous passage of b. luciopercae in predatory fishes (sanders and adult perches), more proportion of trematodes was always observed in anterior region of the intestine. in all groups of hosts, 20-30% of total ...200111881138
systematic position and relationships of paracreptotrematina limi, based on partial sequences of 28s rrna and cytochrome c oxidase subunit 1 genes.paracreptotrematina limi amin and myer, 1982 (trematoda), an intestinal fluke specific to the mudminnow, umbra limi, is conventionally classified within the papillose allocreadiidae. its unusual morphology (lack of identifiable vitellaria, large fully embryonated terminal eggs), assumptions of homology of its 2 atypical muscular oral 'papillae' (lobes) with those of the bunoderinae, and its unknown life cycle make this classification tenuous. previous phylogenetic analyses of the papillose alloc ...200616729708
[helminths fauna of fishes in the mała panew river drainage basin].a parasitological investigation was made at 420 fishes from 10 species: perca fluviatilis l., gymnocephalus cernuus (l.), gobio gobio (l.), tinca tinca (l.), leuciscus idus (l), noemacheilus barbatulus (l.), lota lota (l.), leucaspisus delineatus (heckell 843), blicca biorkna (l.) and rhodeus sericeus amarus (bloch 1782). the fishes were caught over one year period (1995-1996) in the mała panew river drainage basin (south poland). in examined fishes the following parasite species were found: dip ...200016886354
parasite fauna of the eel, anguilla anguilla (linnaeus, 1758), from the polish part of the vistula lagoon.eel is one of the most valuable commercial fish species of the vistula lagoon. for this reason its infection by non-indigenous species of parasites is the subject of the interest of sciencists.200617120993
comparative karyological analysis of three members of allocreadiidae (digenea): taxonomic and phylogenetic implications.chromosome number and morphology were studied in three allocreadiid species from mitotic metaphases of intramolluscan stages using karyometric analysis. bunodera luciopercae has a diploid number 2n=14, with two large pairs of metacentrics, one pair of submeta-subtelocentrics, and four pairs of acrocentrics. karyotype of allocreadium isoporum, 2n=14, with two large pairs of metacentrics and five pairs of acrocentrics was recognized to be closely related to that of b. lucioperca. the most conspicu ...200818612648
comparison of the developmental stages of some european allocreadiid trematode species and a clarification of their life-cycles based on its2 and 28s sequences.genetic data were used to examine the diversity in some allocreadiid trematodes. nuclear ribosomal dna (its2 and partial sequences of 5.8s and 28s) was sampled from sexual adult and 'larval' stages. from these and previous reference datasets phylogenetic trees were constructed. the results uncovered genetically distinct lineages within bunodera luciopercae (müller, 1776), suggesting that the two palaearctic subspecies, b. l. luciopercae and b. l. acerinae roitman & sokolov, 1999, and nearctic b. ...201020532848
influence of triaenophorus nodulosus plerocercoids (cestoda: pseudophyllidea) on the occurrence of intestinal helminths in the perch (perca fluviatilis).concurrent infections of helminths in vertebrates are widespread and may demonstrate synergistic, antagonistic or negligible levels of interactions between species that share a common site. however, indirect interactions between species that occur in different organs of a host are poorly documented, particularly in fish. plerocercoids of triaenophorus nodulosus are common liver infections of european perch (perca fluviatilis). these larval cestodes cause extensive liver damage, resulting in syst ...201728069081
[ratio of r- and k-forms of selection in life cycles of trematodes (plathelminthes, trematoda).the situation is considered in a continuum of r-k-selection of hermaphroditic and parthenogenetic populations of trematodes (fish parasites) of three species: bunodera luciopercae, sphaerostomum bramae, and phyllodistomum elongatum. maritae of b. luciopercae and s. bramae are characterized by a low fertility, single-type reproduction, and long prereproductive period, and are involved in interspecific competition. on the contrary, maritae of ph. elongatum rapidly mature, are highly fertile, repea ...201611042966
toxicokinetics of 2,4,5-trichlorophenol and benzo(a)pyrene in the clam pisidium amnicum: effects of seasonal temperatures and trematode parasites.several biotic and abiotic stress factors may affect aquatic organisms simultaneously. however, not much is known about the effects of, e.g., low temperatures and parasite infections on the toxicokinetics of organic hydrophobic chemicals. here we studied the accumulation and depuration of [(14)c]2,4,5-trichlorophenol (tcp) and [(3)h]benzo(a)pyrene (bap) in the sediment-dwelling freshwater clam pisidium amnicum. experiments were made in october (+15 degrees c), april (+4 degrees c), and july (+15 ...200010948286
digenean parasites of the bivalve mollusc pisidium amnicum in a small river in eastern finland.the host-parasite relationship between digeneans and a semelparous population of the mollusc. pisidium amnicum müller in a small river in eastern finland was studied during 1992/1993. the parasite prevalence of the population was high. the total prevalence was 45.6% in 1992 (n = 790) and 47.5% in 1993 (n = 160). the dominant digenean, bunodera luciopercae (34.2% in 1992, 35.0% in 1993), had highest prevalences in july/august and in winter. two other species, palaeorchis crassus (7.8% in 1992, 7. ...19989745717
[the parasite fauna of stizostedion lucioperca from the bay waters of the baltic coast of east germany].in pike-perches 20 species of parasites were stated: protozoa (1), monogenea (1), cestoda (2), trematoda (8), nematoda (3), acanthocephala (2), hirudinea (1) and crustacea (2). the high extent and intensity of parasitation bunodera luciopercae in pike-perches of the oder bay are striking, a fact which may inhibit their growth and development. parasitological investigation (infestation of pike-perch with brachyphallus crenatus and anisakis spec. larv.) has proved that about 75% of pike-perch migr ...19883245634
occurrence of bunodera luciopercae (digenea: allocreadiidae) in fish from hanningfield reservoir, essex. 19734775758
Displaying items 1 - 20 of 20