| observations on the fine structure of the cercaria of notocotylus attenuatus and formation of the cyst wall of the metacercaria. | | 1971 | 4339450 |
| observations on the fine structure of the cercaria of notocotylus attenuatus and formation of the cyst wall of the metacercaria. | | 1971 | 4949295 |
| observations on the cyst formation of notocotylus attenuatus. | | 1967 | 5583387 |
| [helminths in broiler geese fattened in runs]. | the occurrence of helminths in broiler geese was studied in the rapid-fattening technological system in 1974-1978. the birds were kept on grassy run adjacent to water. helminthological examination was performed in 1065 broilers and the following 16 helminth species were revealed: notocotylus attenuatus (0.3%), apatemon gracilis (1.5%), cotyrulus cornutus (0.1%), hypoderaeum conoideum (0.1%), retinometra longicirrosa (3.2%), drepanidotaenia lanceolata (3.1%), sobolevicanthus fragilis (0.7%), dior ... | 1980 | 6781122 |
| parasites of waterfowl, from southwest texas: iii. the green-winged teal, anas crecca. | seventy of 72 green-winged teal, anas crecca, from southwest texas were infected with parasites. seventeen species of endoparasites were recorded: notocotylus attenuatus, zygocotyle lunata, typhlocoelum sisowi, echinostoma revolutum, hypoderaeum conoideum, dendritobilharzia pulverulenta, cloacotaenia megalops, sobolevicanthus gracilis, sobolevicanthus krabbeella, gastrotaenia cygni, amidostomum acutum, amidostomum anseris, tetrameres crami, echinuria uncinata, corynosoma constrictum, polymorphus ... | 1981 | 6788963 |
| viability of notocotylus attenuatus (trematoda: notocotylidae) metacercariae under adverse conditions. | the viability of notocotylus attenuatus metacercariae was 80% at 20 wk post-encystment (pe) and decreased to 10% at 24 wk pe. cyst viability was influenced by the duration of cercarial swimming activity prior to encystment, by the occurrence of cyst associations, and by the type of cyst storage. this is the first report on cyst associations formed by notocotylidae cercariae. cyst associations were formed only by cercariae encysting shortly after their emergence from snails. in cyst associations ... | 1994 | 8151823 |
| experimental infection of domestic ducks and rodents by notocotylus attenuatus (trematoda: notocotylidae). | in order to study transmission patterns of notocotylus attenuatus five 3-wk-old domestic ducks, five 8-wk-old rats and ten 4-wk-old mice were infected with the parasite. all ducks became infected and all flukes were recovered from the intestinal ceca. worms moved down the length of the cecum during development and as the parasites grew they changed their method of attachment. flukes became gravid by day 16 post-infection, after which growth ceased. egg filaments appear to play a role in the form ... | 1993 | 8355345 |
| cadmium toxicity and snail-digenean interactions in a population of lymnaea spp. | the toxicity of cadmium to a population of lymnaea peregra and l. stagnalis naturally infected with a range of digeneans and collected from a number of sites in the lower thames valley, uk was investigated. lymnaeid snails were exposed to 100 microg l-1 cadmium and the effects on host survival and emergence of cercariae recorded. overwintered l. peregra, but not l. stagnalis, showed significantly reduced survival compared to seasonally infected snails, i.e. snails which have acquired an infectio ... | 2003 | 12590665 |
| [taxonomic, topical and quantitative structure of the community of intestinal flukes (digenea) of mallards, anas platyrhynchos linnaeus, 1758 from the area of szczecin]. | taxonomic, topical and quantitative structure of the community of intestinal flukes (digenea) of mallards, anas platyrhynchos linnaeus, 1758 from the area of szczecin. a total of 55 mallards (anas platyrhynchos l.) from the area of szczecin were examined for the presence of intestinal flukes (digenea). this study covered the taxonomic structure (specific composition and taxonomic affiliation of the parasites), topical structure (parasites' distribution within the host's organism), and quantitati ... | 2002 | 16894718 |
| 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 |
| [digenea in melanitta fusca and m. nigra (mergini, anseriformes) from the baltic sea]. | ten individuals of melanitta fusca and m. nigra (mergini, anseriformes) each, wintering at the polish baltic coast, were examined for the presence of parasites. m. fusca yielded a total of 197 helminths, including 20 digeneans and 177 nematodes. the m. nigra individuals examined were found to support 923 helminths, including 62 digeneans, 860 nematodes, and a single cestode. m. fusca were hosts to the digeneans: cryptocotyle concava, notocotylus attenuatus and psilostomum brevicolle. digenea fou ... | 2008 | 18702322 |
| 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 |
| digenean larvae--the cause and beneficiaries of the changes in host snails' thermal behavior. | parasite-induced changes in host's thermal preferences not only can be interpreted as a physiological defense response of the host but also can represent a pathological manifestation of the parasite. both may become established in host-parasite relationships if they are beneficial for at least one of the counterparts. this study investigates parasite-induced changes in the thermoregulatory behavior of first intermediate hosts of digenea (i.e. lymnaea stagnalis and planorbarius corneus), infected ... | 2015 | 25563607 |
| gastrointestinal helminthes of green-winged teal (anas crecca) from north iran. | to determine the helminth parasites of anas crecca (a. crecca) in one of proper refuges of iran, fereydunkenar. | 2014 | 25183069 |
| the pattern of serotonin and fmrfamide in cercaria from different taxonomic groups--a preliminary study. | serotoninergic and fmrfamidergic components of the nervous system were examined in cercaria from different types using immunocytochemical techniques interfaced with confocal scanning laser microscopy. cercariae from 9 families were studied - opisthorchis felineus, parafasciolopsis fasciolaemorpha, echinochasmus coaxatus, echinoparyphium aconiatum, notocotylus attenuatus, psilotrema tuberculata, plagiorchis sp., cyathocotyle bithyniae, diplostomum chromatophorum. the results show that 5-ht-ir and ... | 2008 | 18652395 |
| [epidemiological studies on clonorchis sinensis infection along the nam-river in gyeongnam province, korea] | an epidemiological study on clonorchis sinensis infection along the nam-river (total length; 186km) flowing in gyeongsang-nam-do, southern part of korea, was carried out. formalin-ether concentration technique and stoll's egg counting method were employed to figure out the prevalence of c. sinensis infection. for the detection of cercariae from parafossarulus sp., the snail host of c. sinensis, each snail was placed in aerated tap water, and examined for expelled cercariae. for observing the met ... | 1983 | 12902647 |
| a study on the parasitic helminths of domestic duck(anas platyrhynchos var. domestica linnaeus) in korea. | during february 1982 to septemner 1983, a total of 105 domestic ducks (anas platyrhynchos var. domestica linnaeus) were collected from ichon gun, puasn city, chunchon city, yanggu gun, taejeon city and unknown areas in korea. in the results, six trematode and one nematode species of helminth parasites were obtained and described as follows: amphimerus anatis yamaguti, 1933, echinostoma miyagawai ishii, 1932, echinochasmus japonicus tanabe, 1926, cryptocotyle sp., notocotylus attenuatus (rudolphi ... | 1984 | 12891015 |
| toxicity of cadmium and zinc to encystment of notocotylus attenuatus (trematoda: notocotylidae) cercariae. | the toxicity of cadmium, zinc, and cadmium/zinc mixtures at concentration ranging from 100 to 10,000 microg/l was investigated against the encystment strategy of free-living metacercarial stages of the parasitic fluke notocotylus attenuatus. exposure of encysting cercariae caused a reduction in encystment by all metals at concentrations of 1000 microg/l or higher. the formation of cyst associations was reduced in all metal-polluted test solutions. in addition, there was an increase in the number ... | 2002 | 12481868 |
| the structure and possible function of the ventral papillae of notocotylus attenuatus (rudolphi, 1809) kossack, 1911, (trematoda: notocotylidae). | specimens of notocotylus attenuatus were examined in life and their ventral papillae studied by scanning and transmission electron microscopy. it was found that the papillae are non-secretory, very mobile and similar in ultrastructure to the papillae of other notocotylids previously described. worms were removed from the host's caecum and the caecum surface examined where it had been in contact with the papillae; this revealed that the crypts in this region had been distorted and enlarged. it is ... | 1980 | 7367039 |
| gastrointestinal helminths of the mexican duck, anas platyrhynchos diazi ridgway, from north central mexico and southwestern united states. | twenty-five species of helminths, recovered from the gastrointestinal tracts of 129 mexican ducks from mexico and the united states, were all new host records. the species included: echinoparyphium recurvatum, echinostoma revolutum, hypoderaeum conoideum, notocotylus attenuatus, prosthogonimus cuneatus, zygocotyle lunata, anomotaenia ciliata, cloacotaenia megalops, diorchis bulbodes, diorchis sp., drepanidotaenia lanceolata, echinocotyle rosseteri, fimbriaria fasciolaris, fimbriarioides sp., hym ... | 1986 | 3951061 |
| [multiple forms of nad-dependent malate dehydrogenase in 3 species of trematodes of the genus notocotylus (trematoda: notocotylidae)]. | nad dependent malate dehydrogenases of three trematode species, notocotylus attenuatus, n. ephemera and n. imbricatus, have been investigated by electrophoresis. seven different zones with 15 isoenzymes in n. attenuatus, 16 isoenzymes in n. ephemera and 11 isoenzymes in n. imbricatus have been found in mdh spectra. isoenzymes of mdh are controlled by seven polymorphic loci. the activity of isoenzymes of three slowly migrating zones is 10 and more times higher than that of fast zones (4-7). the g ... | 1990 | 2100002 |
| an outbreak of trematodiasis in domestic geese. | losses greater than 3% were incurred in a large flock of domestic geese on summer pasture. necropsy of the sick birds revealed no significant bacterial or viral isolates. the trematodes echinostoma revolutum and notocotylus attenuatus were present in considerable numbers, respectively in the small and large intestines. | 1976 | 962765 |
| insights into the development of notocotylus attenuatus (digenea: notocotylidae) in lymnaea stagnalis: from mother sporocyst to cercariae. | notocotylus attenuatus (digenea: notocotylidae) is a monostome fluke parasitizing the intestinal caeca of waterfowl that uses an injection apparatus to infect its intermediate snail host. morphology of the invading larva (a sporocyst), and the intramolluscan larval development of this fluke have not been characterized extensively. in this study, experimental infections of lymnaea stagnalis using n. attenuatus eggs resulted in the development of sporocysts containing one germ ball or mother redia ... | 2014 | 24060542 |
| helminth community structure in two species of arctic-breeding waterfowl. | climate change is occurring rapidly at high latitudes, and subsequent changes in parasite communities may have implications for hosts including wildlife and humans. waterfowl, in particular, harbor numerous parasites and may facilitate parasite movement across broad geographic areas due to migratory movements. however, little is known about helminth community structure of waterfowl at northern latitudes. we investigated the helminth communities of two avian herbivores that breed at high latitude ... | 2016 | 27709067 |