| [cytochemical characteristics of the labrocyte-like cells in the capsule of the plerocercoids of triaenophorus nodulosus (pallas, 1781) and diphyllobothrium dendriticum (nitzsch, 1824) cestodes]. | out of six fish species examined (esox lucius, paracottus kessleri, perca fluviatilis, leuciscus leuciscus baicalensis, coregonus autumnalis migratorius, thymallus arcticus baicalensis) labrocyte-like cells were detected in esox lucius, leuciscus leuciscus baicalensis, coregonus autumnalis migratotius. the cells contain large metachromatic granules. histochemical methods revealed in them sulfated and carboxylic acid mucopolysacharides. the amount of labrocyte-like cells in the capsules around pl ... | 1977 | 143258 |
| [development of the neural apparatus of triaenophorus nodulosus (cestoidea, pseudophyllidae) during ontogenesis]. | the anatomy of the nervous apparatus of triaenophorus nodulosus at all stages of its life cycle was studied by means of zherebtsov's hystochemical method. judging by the cholinesterase activity the mass of nerve cells is situated in the oncospheres of the coracidium. at the procercoid stage the ortogonal nervous system arises with three pairs of the longitudinal nervous trunk. in plerocercoids the number of longitudinal trunks increases up to 7 pairs, the rough nervous plexus and inner plexus de ... | 1977 | 896268 |
| [changes in the argyrophil stroma of the liver of fishes infested with the pleurocercoids, triaenophorus nodulosus and diphyllobothrium dendriticum (cestoidea, pseudophyllidae)]. | the argentaffine stroma of the liver of some fishes (perca fluviatilis, exos lucius, paracottus kessleri, coregonus autumnalis migratorius, thymallus arcticus) is described. the nature and depth of pathological changes in the argentaffine stroma of the liver at its infection with pleurocercoids of pseudophyllids depend on the infection intensity, host's specificity and on the biocoenotic relationships of hydrobionts in a waterbody. | 1977 | 896280 |
| [study of the cumulation, desorption and mechanism of action of organochlorine pesticides on fish cestodes]. | the distribution of residues of ddt and its metabolites (ddd and dde) in tissues of triaenophorus nodulosus and its host was studied. it has been noted that cestodes can accumulate chlororganic substances in great quantity. the ability of bothriocephalus gowkongensis has been established to dechlorate pp-ddt and to excrete pp-, op- and mp-ddd from the organism. pp-ddt decreases the glycogene content and causes the rise of amylolytic activity in the above cestodes in acute tests. the effect of pp ... | 1976 | 958717 |
| effect of methoxychlor on the embryonic development and respiratory metabolism of fasciola hepatica (trematoda) and triaenophorus nodulosus (cestoda) embryos. | | 1976 | 1016906 |
| [effect of procercoids of triaenophorus nodulosus on the biology of their 1st imtermediate hosts cyclops strenuus]. | the effect of procercoids of t. nodulosus on the periods of metamorphosis, fecundity, survival and the capacity to infect c. strenuus at all copepodid stages (i-v) was studied experimentally. it has been first shown that early copepodid stages (i-iii) can be easily infected and serve as first intermediate hosts of t. nodulosus. under the effect of the parasite the metamorphosis periods of the i and 2-nd copepodid stages increase considerably even at the low infection intensity while at the iv an ... | 1976 | 1026910 |
| the effect of foschlor and mcpa upon the embryo development of fasciola hepatica (trematoda) and triaenophorus nodulosus (cestoda). | | 1975 | 1164689 |
| on some cestodes parasitizing freshwater fish in italy. | the paper presents a systematic survey of some cestodes parasitizing freshwater fish in italy. the following eight species were recorded: monobothrium wageneri, cyathocephalus truncatus, triaenophorus nodulosus (plerocercoids and adults), bothriocephalus acheilognathi, b. claviceps, ligula intestinalis (plerocercoids), schistocephalus sp. (plerocercoids) and proteocephalus percae from perca fluviatilis which is reported from freshwater fish in italy for the first time. all the tapeworms recovere ... | 1992 | 1339972 |
| the karyotypes of triaenophorus nodulosus and t. crassus (cestoda: pseudophyllidea). | two species of the genus triaenophorus were found to have widely different chromosome sets. the karyotype of t. nodulosus consists of 26 biarmed chromosomes ranging from 1.45 to 6.75 microns long. the diploid set of t. crassus contains 18 chromosomes with a well-distinguished first pair of large metacentric homologues. all the chromosomes with the exception of the last pair of acrocentric elements are biarmed. their absolute length ranges from 1.50 to 8.50 microns. the possible pathways of karyo ... | 1991 | 2040557 |
| triaenophorus nodulosus and t. crassus in fish from northern finland. | 10,288 fish specimens of 34 species from three water bodies in northern finland were studied mainly in 1978-1982 triaenophorus nodulosus and t. crassus parasites. six of the 31 species from the bothnian bay were found to harbour t. nodulosus plerocercoids, four of the 11 from the cold, oligotrophic lake yli-kitka in northeastern finland and only one of the 6 from the small, eutrophic lake kuivasjärvi. the ruff (gymnocephalus cernuus) was most essential intermediate host in the lakes, as supporte ... | 1989 | 2488051 |
| helminth position within the intestine of naturally infected pike (esox lucius) relative to host stomach contents. | the positions of 3 cestode species, triaenophorus crassus forel, triaenophorus nodulosus (pallas), and proteocephalus pinguis larue, and a nematode, raphidascaris acus (bloch), within the intestine of naturally infected pike (esox lucius l.) were evaluated with respect to the presence or absence and state of digestion of host stomach contents. the positions of scolices and strobilae of the cestodes did not vary with respect to host stomach contents. by contrast, r. acus was anterior (near the st ... | 1989 | 2614600 |
| [carbohydrate transport in the cestode triaenophorus nodulosus]. | the data demonstrating the presence of the glucose active transport system in the cestode t. nodulosus are obtained. kinetic characteristics of the transport are estimated and their dependence on the incubation temperature are shown. heterogeneity of the worm body in respect to transport processes and their dependence on the physiological state of cestodes are discovered. the absorption of different forms of glucose is studied and the similarity of digestion processes in parasites and their host ... | 1989 | 2771429 |
| [distribution and mechanism of the regulation of the pleurocercoid population count of triaenophorus nodulosus (cestoda, triaenophoridae)]. | the character of the distribution of pleurocercoids of triaenophorus nodulosus depending on the host age is shown. their distribution in perch at the age of 0+-4+ is over dispersed in its character and is described by negative binomial. at the age of 5+ to 8+ the distribution of parasites is of regular character that is apparently due to changes in the mechanism of regulation of the parasites number. the regulation mechanism of the number of pleurocercoids of t. nodulosus is discussed. | 1987 | 2963255 |
| [enzyme serologic studies of the arctic char (salvelinus alpinus l.) of lake königssee affected by triaenophorus nodulosus]. | | 1986 | 3814071 |
| [effect of cestodes on the tissue lipid composition of the burbot and stickleback]. | the effect of cestodes of the genus diphyllobothrium on the lipoid contents of tissues of freshwater fishes has been studied. the level of general lipids in the liver of burbot and stickleback infected with plerocercoids of d. latum and d. vogeli, respectively, decreases. it occurs in general on account of decrease in contents of structural lipids, phospholipids, while the contents of triacylglycerines, cholesterol and its ethers change but negligibly. simultaneous parasitism of plerocercoids of ... | 1985 | 4011309 |
| [electron microscopic study of the processes of origination and formation of the integument in cestoda as exemplified by triaenophorus nodulosus]. | | 1973 | 4358837 |
| effect of chronic action of sublethal pesticide concentrations (sodium methyldithiocarbamate--vapam). activity on the metabolic of fasciola hepatica (trematoda) and triaenophorus nodulosus (cestoda) embryos. | | 1974 | 4413030 |
| [origin and formation of microtrichia in cestodes exemplified by electron microscopic data on triaenophorus nodulosus]. | | 1972 | 4642925 |
| investigations on the oxidation-reduction activity in embryos and coracidia of triaenophorus nodulosus (pall.) by the chemiluminescence method. | | 1969 | 5380518 |
| [electron microscopic data on lipid excretion in triaenophorus nodulosus (pall)]. | | 1967 | 5596096 |
| [an experimental study of the development cycle of triaenophorus nodulosus (pall. 1760) (cestoda, pseudophyllidae)]. | | 1966 | 5967987 |
| [temperature dependence of the arginase activity of the plerocercoids of triaenophorus nodulosus and diphyllobothrium latum]. | the effect of temperature on the arginase enzyme activity in triaenophorus nodulosus and diphyllobothrium latum was studied. the temperature optimum of arginase of t. nodulosus (definitive hosts are fishes) is at 27 degrees while in d. latum it is at 57 degrees. it has been inferred that a certain preadaptation of some enzyme properties (temperature optimum, thermostabolity) to a temperature regime of a definitive host takes place. biochemical mechanisms of preadaptation of enzyme systems of hel ... | 1982 | 7155629 |
| [fatty acid composition of the helminths of cold- and warm-blooded vertebrates]. | studies have been made on fatty acid composition of 5 species of parasitic helminthes from fish, birds and mammals. as compared to the lipids from helminthes of endothermic animals (diphylobothrium dendriticum and toxascaris leonina), those from fish parasites (eubothrium crassum, triaenophorus nodulosus and metechynorhynchus salmonis) are less saturated and contain higher amounts of penta- and hexaenic acids, acids of omega 3 type, being less rich in the content of stearic, oleic, dienic and om ... | 1980 | 7468010 |
| parasite infections in danish trout farms. | samples from 5 danish freshwater trout farms rearing rainbow trout (oncorhynchus mykiss) were examined for parasite infections from october 1993 until november 1994 and recorded parasites are listed. in addition, results from an examination of a mariculture net cage system are presented as well. a total of 10 metazoan and 10 protozoan parasites were recorded. the metazoans included gyrodactylus derjavini, gyrodactylus salaris, eubothrium crassum, triaenophorus nodulosus, proteocephalus sp., dipl ... | 1995 | 7502946 |
| [iso-osmotic regulation in cestodes from freshwater fishes]. | the content of sodium, potassium, calcium, and magnesium ions was determined in cestodes ligula intestinalis, eubothrium rugosum, and triaenophorus nodulosus. in freshwater fishes the total concentration of na, k, ca, mg ions in cestode tissue water is practically similar to that of fishes muscles and in serum. it was suggested that examined cestodes have isoosmotic regulation of the water-salt balance. | 1994 | 7816510 |
| [localization and activity of some hydrolases in larvae of tapeworms neogryporhynchus cheilancristrotus and triaenophorus nodulosus parasitizing fish]. | in the study, an attempt was undertaken to compare the most common species of tapeworms' larvae in fish: n. cheilancristrotus and t. nodulosus on the basis of histoenzymatic examination of 3 enzymes: alkaline phosphatase (ap), acid phosphatase (aph) and nonspecific esterase (en-alpha). the high activity of ap and aph in the cuticle and subcuticular cells, and the lack of en-alpha activity in these structures was stated. besides, an intensive ap and en-alpha activity took place in the n. cheilanc ... | 1996 | 9103052 |
| frequency distributions of fish parasites in the perch perca fluviatilis l. from lake constance. | seventy perch (perca fluviatilis) caught in lake constance at langenargen in may 1990 were examined for parasites. the frequency distributions of the eyefluke diplostomum spathaceum (rudolphi, 1819), and the tapeworms proteocephalus percae (müller, 1780) and triaenophorus nodulosus (pallas, 1781) fitted closely to a negative binomial. only a few fish were highly parasitized. these fishes are devoured by the final hosts: gulls (diplostomum spathaceum) or the pike (triaenophorus nodulosus). the fi ... | 1997 | 9134560 |
| the parasitism of fish from lake constance--a comparison of present and earlier data. | commercial fish (perch, roach, bream, dace, and burbot) were caught below langenargen in 1988-1990. their infestation with cestodes and digenean trematodes was studied. the results were compared with earlier data. the infestation of perch with diplostomum spathaceum and ichthyocotylurus variegatus noted in 1988-1990 had increased as compared with that observed in 1974-1976. the infestation of perch with triaenophorus nodulosus seen in 1990 had increased as opposed to that noted in 1988. the infe ... | 1997 | 9342745 |
| ultrastructural investigation of the secondary excretory system in different stages of the procercoid of triaenophorus nodulosus (cestoda, pseudophyllidea, triaenophoridae). | the formation of the definitive procercoid excretory system of the pseudophyllidean cestode triaenophorus nodulosus has been investigated. this process can be divided into 3 main stages. in the first stage, active autophagic processes lead to the formation of intracellular excretory canals. in the second stage, the process of the autolysis is enhanced and the system of intercellular lacunae functioning as an excretory system is formed. a definitive excretory system of the procercoid forms at the ... | 1998 | 9585939 |
| factors affecting abundance of triaenophorus infection in cyclops strenuus, and parasite-induced changes in host fitness. | factors affecting the abundance of triaenophorus crassus and triaenophorus nodulosus procercoids in their copepod first intermediate host, cyclops strenuus, and effects of infection on feeding behaviour, reproduction and survival of the host were studied experimentally. when exposed to the same number of coracidia, copepods harboured considerably less procercoids in the trials where ciliates or artemia salina nauplii were given as alternative food items. the prevalence of infection was higher in ... | 1999 | 10616925 |
| [the parenchymal cellular composition and extracellular matrix in ontogenesis of triaenophorus nodulus (cestoda)]. | the cellular composition of parenchyma was studied in the ontogenesis of triaenophorus nodulosus and it was shown that the specialized parenchymal cells was absent. the extracellular matrix fibrils were synthesized successively by the tegumental cytons and muscle cells. the coracidium basal matrix consisted of electron-light and electron-dense layers, and the reticular layer appeared at the procercoid stage. reserve nutrients were accumulated by the musculocutaneous sac elements at the procercoi ... | 2001 | 11236573 |
| [structure of scolex hooks and genosystematics of triaenophorus nodulosus (cestoda: pseudophyllidea) from the baikal lake]. | data on a hook morphology (in plerocercoid and mature helminths) and gene systematics of triaenophorus nodulosus from the baikal lake are presented for the first time. sequence analysis of rdna fragments (5'-end portion of 18s rdna) yelded 562 nucleotid positions. | 2001 | 11548588 |
| [ultrathin structure of the main lateral nerve cords and accompanying elements of triaenophorus nodulosus (cestoda: pseudophyllidea)]. | the ultrastructure of lateral nerve cords (lnc) of triaenophorus nodulosus has been studied. 4 of the 6 types of neurones earlier reported for cerebral ganglia are present in lnc: multipolars, bipolars, unipolars and "light"; neurosecretory cells of the 7th type lie in transverse commissures. the growth and formation of lnc occur at the expense of undifferentiated cells found on the cord periphery among mature neurones. lnc are surrounded with specialized envelopes made of cell processes of excr ... | 2002 | 12455368 |
| [effect of congestion of the culture on the development of eggs of triaenophorus lucii (müll.) (cestoda)]. | | 1956 | 13392824 |
| observations on the occurrence of the plerocercoids of triaenophorus nodulosus (pallas, 1781) (cestoda: pseudophyllidea) in the perch perca fluviatilis l. of llyn tegid (bala lake), merionethshire. | | 1964 | 14204122 |
| [investigations in the occurrence of triaenophorus nodulosus in salvelinus alpinus in the lake of st. bartholomew]. | | 1964 | 14340323 |
| [preliminary studies on the transformations of high energy compounds in the coracidian, triaenophorus nodulosus (pall.) (cestoda) and in the first intermediate hosts (copepoda)]. | | 1964 | 14346843 |
| [hydrolytic activities of microflora enzymes in pike intestines and parasite triaenophorus nodulosus (cestoda, pseudophyllidea). ]. | | 2005 | 15909900 |
| [the role of alpha-amylase of symbiotic microflora in digestion by lower cestodes and their fish hosts]. | the symbiotic microflora associated with the digestive-transport surfaces of the pike intestine and the parasitic cestodes triaenophorus nodulosus proved capable of the initial stages of carbohydrate hydrolysis mediated by alpha-amylase. the products of hydrolysis by alpha-amylase can be used by both the host and the parasite, which decreases energy expenditures of the macroorganisms. the levels of the bacterial alpha-amylase activity are comparable to those of the analogous enzyme absorbed on t ... | 2005 | 16004283 |
| [activity of symbiotic microflora carbohydrases and their functions in digestion in fish and their parasitic cestodes (pike and triaenophorus nodulosus)]. | | 2005 | 16124510 |
| spermiogenesis and sperm ultrastructure of the pseudophyllidean cestode triaenophorus nodulosus (pallas, 1781). | spermiogenesis and ultrastructure of the spermatozoon of the pseudophyllidean cestode triaenophorus nodulosus (pallas, 1781), a parasite of pike esox lucius, has been studied by transmission electron microscopy. spermiogenesis involves firstly the formation of a zone of differentiation with two centrioles associated with striated roots, and an intercentriolar body between them, subsequent growth of the two flagella of unequal length, and a formation of a median cytoplasmic process exhibiting pat ... | 2005 | 16240127 |
| [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 ... | 2000 | 16886354 |
| parasite fauna of selected fish species of lake miedwie. | a total of 136 fishes, representing 9 species (perch, perca fluviatilis l.; pike, esox lucius l.; european eel, anguilla anguilla (l.); common bream, abramis brama (l.); roach, rutilus rutilus (l.); tench tinca tinca (l.); european whitefish, coregonus lavaretus (l.); vendace, coregonus albula (l.); and zander, sander lucioperca (l.)), from lake miedwie were studied within 1997-1999. the necropsies yielded 41 parasite species (taxa). the most diversified were parasite faunas of pike (19 parasite ... | 2002 | 16888943 |
| a comparative study on the parasite fauna of perch, perca fluviatilis l., collected from a freshwater coastal lake, brackish-water baltic sea, and the interconnecting canal. | parasitological surveys of freshwater fishes rarely include comparisons between two ecologically different bodies of water. such studies might help to understand processes of establishment of parasite faunas in estuary areas. the results obtained could also provide useful tools for discriminating various fish populations based on the composition of their parasite faunas. the present authors attempted to study such data from resko lake-a freshwater coastal lagoon (6 km2 surface area), and the adj ... | 2005 | 16913502 |
| [indigenous microflora associated with the tegument of triaenophorus nodulosus (cestoda) and the intestine of its pike host]. | investigations of the indigenous microflora associated with the mucous intestines of fish and its cestode parasites have been for the first time carried out using the methods of transmission and scanning electron microscopy. new data on the bacterial biodiversity in the cestode and its fish host are obtained. nanobacteria and spirochaetes are for the first time revealed in a fish host together with the previously known bacteria forming the intestinal microflora of fish. spirochaetes were shown t ... | 2006 | 17285757 |
| invalidity of three palaearctic species of triaenophorus tapeworms (cestoda: pseudophyllidea): evidence from morphometric analysis of scolex hooks. | a comparative study of the scolex hook morphology of five species of tapeworms of the genus triaenophorus rudolphi, 1793 (cestoda: pseudophyllidea), parasites of pikes (esox lucius l. and e. reichertii dybowski) in the palaearctic region, was carried out. measurements of scolex hooks of 81 plerocercoids and 492 adults from different hosts and regions were compared using basic statistics and forward stepwise linear discriminant analysis. the shape of the scolex and that of tridental hooks were fo ... | 2007 | 17441435 |
| between-population similarity in intestinal parasite community structure of pike (esox lucius)--effects of distance and historical connections. | the effect of geographical distance on similarity in parasite communities of freshwater fish has received considerable attention in recent years, and it has become evident that these apparently simple relationships are influenced by, among other things, colonization ability of parasites and degree of connectivity between the populations. in the present paper, we explored qualitative and quantitative similarity in the intestinal parasite communities of pike (esox lucius) in a particular system wh ... | 2009 | 18925789 |
| endoparasites of european perch perca fluviatilis fry: role of spatial segregation. | a total of 246 perch perca fluviatilis l. fry, 20 to 106 d old from 3 different reservoir subpopulations (epipelagic perch fry, epf; bathypelagic perch fry, bpf; littoral perch fry, lpf), were examined for parasites. six species of endoparasites were found: the nematode camallanus lacustris was the most common, followed by the cestodes proteocephalus percae, bothriocephalus claviceps, glanitaenia osculata and the acanthocephalan acanthocephalus lucii. all worms were juvenile or immature and were ... | 2009 | 19899354 |
| parasitic fauna of the lake brown trout, salmo trutta lacustris (salmonidae), a little known endemic fish from polish waters. | the lake brown trout is a salmonids fish regarded as a stationary form of the migratory trout. within 2003-2004, 31 lake brown trout (salmo trutta lacustris l.) from lake wdzydze (poland), were examined for the presence of parasites following commonly used procedures. the parasites found represented digenea: diplostomum sp., posthodiplostomum cuticola (nordmann, 1832), sphaerostomum globiporum (rudolphi, 1802); cestoda: eubothrium crassum (bloch, 1779), triaenophorus nodulosus (pallas, 1781); ac ... | 2009 | 20209824 |
| genetically distinct colour morphs of european perch perca fluviatilis in lake constance differ in susceptibility to macroparasites. | the unusual yellow-finned morph of european perch perca fluviatilis found in lake constance suffers more severely from macroparasite infections, including the tapeworm triaenophorus nodulosus and the gill worm ancyrocephalus percae, than conspecifics elsewhere. microsatellite analysis of yellow-finned p. fluviatilis and red-finned variant recently discovered in lake constance revealed significant genetic differentiation. red-finned p. fluviatilis and fish with mixed fin colour, suggested backcro ... | 2015 | 25644228 |
| 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 ... | 2017 | 28069081 |
| [the environmental conditions and predictors of formation of the bases for a combination of diphyllobothrium dendriticum and triaenophorus nodulosus foci in the flood-river ecosystem of the angara river]. | investigations were conducted in the context of the landscape-biocenological concept. the formation of water-storage basins in the valley of the angara river was shown to give rise to the transformation of the morphological structure and hydrological regimen of a landscape, which determined a change in some environmental conditions and factors of a combination of foci and the emergence of others. the morphological structure and hydrological regimen of a landscape, the species composition of ecos ... | 2012 | 22774497 |
| in vitro leukocyte response of three-spined sticklebacks (gasterosteus aculeatus) to helminth parasite antigens. | helminth parasites of teleost fish have evolved strategies to evade and manipulate the immune responses of their hosts. responsiveness of fish host immunity to helminth antigens may therefore vary depending on the degree of host-parasite counter-adaptation. generalist parasites, infective for a number of host species, might be unable to adapt optimally to the immune system of a certain host species, while specialist parasites might display high levels of adaptation to a particular host species. ... | 2014 | 24176687 |
| infection levels of plerocercoids of the tapeworm triaenophorus crassus and feeding strategy in two fish species from the ultra-oligotrophic lake achensee, austria. | thus far, high burdens of triaenophorus crassus plerocercoids have been reported only in old age groups of coregonid and salmonid fishes. here we show heavy infection with t. crassus in young whitefish coregonus lavaretus in the ultra-oligotrophic and regulated achensee in tyrol, austria. prevalence of t. crassus on c. lavaretus was 100% in all age groups and abundance significantly increased with fish age. the mean annual accumulation of t. crassus was 5.2 parasites in 0- to 7-year-old c. lavar ... | 2016 | 25345803 |
| the effect of parasite infection on stable isotope turnover rates of δ15n, δ13c and δ34s in multiple tissues of eurasian perch perca fluviatilis. | stable isotope analysis of commercially and ecologically important fish can improve understanding of life-history and trophic ecology. however, accurate interpretation of stable isotope values requires knowledge of tissue-specific isotopic turnover that will help to describe differences in the isotopic composition of tissues and diet. we performed a diet-switch experiment using captive-reared parasite-free eurasian perch (perca fluviatilis) and wild caught specimens of the same species, infected ... | 2017 | 28046021 |
| [ecological and biochemical aspects of parasite-host interactions in transformed aquatic bodies: a case study of the cestode triaenophorus nodulosus and its host, the northern pike esox lucius]. | the lysosomal enzyme activities of the cestode triaenophorus nodulosus and its host, the pike, in-aquatic bodies with different degrees of technogenic transformation (northern karelia, russia) have been studied. as has been shown, iron-ore waste causes an increase in the acid phosphatase, nuclease, and beta-galactosidase activities of the host and a decrease in its beta-glucosidase and cathepsin d activities. as a rule, the changes in the same cestode enzyme activities are the opposite. with a d ... | 2016 | 26349236 |
| ultrastructural assessment of granulomas in the liver of perch (perca fluviatilis) infected by tapeworm. | granulomas caused by migration of larvae of a helminth parasite, triaenophorus nodulosus, within the liver of perch (perca fluviatilis) from rimov dam lake (czech republic) were assessed by transmission electron microscopy. lesions were found in the liver of 29 out of 34 perch examined (85.2%) and there were between 1 and 15 t. nodulosus larvae identified per host. pathological changes were more severe in livers containing more granulomas. within the granulomas, there were three concentric regio ... | 2015 | 25557793 |
| impact of the cestode triaenophorus nodulosus on the exotic lepomis gibbosus and the autochthonous perca fluviatilis. | the effects of plerocercoids of the cestode triaenophorus nodulosus infecting the livers of native eurasian perch perca fluviatilis and non-native pumpkinseed lepomis gibbosus was investigated in 17 sites along the moselle watershed. with a single exception, infected individuals were not observed in the main channel whether or not northern pike esox lucius, a final host, was present. in ponds where the pike was present, the prevalence of t. nodulosus averaged 86% in eurasian perch and 15% in pum ... | 2015 | 25475253 |
| multiple isotope analyses of the pike tapeworm triaenophorus nodulosus reveal peculiarities in consumer-diet discrimination patterns. | previous studies of dietary isotope discrimination have led to the general expectation that a consumer will exhibit enriched stable isotope levels relative to its diet. parasite-host systems are specific consumer-diet pairs in which the consumer (parasite) feeds exclusively on one dietary source: host tissue. however, the small numbers of studies previously carried out on isotopic discrimination in parasite-host (δxp-ht) systems have yielded controversial results, showing some parasites to be is ... | 2015 | 24451479 |
| perch liver reaction to triaenophorus nodulosus plerocercoids with an emphasis on piscidins 3, 4 and proliferative cell nuclear antigen (pcna) expression. | histopathological lesions caused by plerocercoids of triaenophorus nodulosus within the liver of perch, perca fluviatilis, from lake trasimeno were studied. livers harbored 1-3 parasite larvae and pathological alterations were more marked in those with 3 plerocercoids. in the liver, larvae were encysted, surrounded by a capsule of host tissue; two of 14 plerocercoids were necrotic. in infected livers, some hepatocytes showed degenerative changes, i.e. swelling and hydropic degeneration, notably ... | 2014 | 24360655 |