| fine structure and sugar transport functions of the tegument in clinostomum marginatum (digenea: clinostomatidae): environmental effects on the adult phenotype. | digenean flukes can be classified into 3 groups according to their location in the host: the lumen of the alimentary canal or associated organ, body cavity or tissue, and external surfaces. we obtained adults of clinostomum marginatum that had matured in these 3 habitats and compared the fine structure and glucose transporting capacity of their teguments. adults from the esophagus of herons, ardea herodias, had thick, smooth teguments and took up glucose by facilitated diffusion, the type of tra ... | 1991 | 1919910 |
| bacteria associated with tegument of clinostomum marginatum (digenea). | adults of clinostomum marginatum freshly collected from a heron, ardea herodias, were examined using transmission electron microscopy. specimens from the mouth of the bird were encrusted with bacteria that were not removed by washing unless the saline contained antibiotics. there was no evidence that the attached bacteria were damaging to the trematode tegument. three species of gram-negative bacteria were isolated from the worm surfaces and identified; achromobacter sp. was present in pure cult ... | 1991 | 1919930 |
| cultivation of helminths in chick embryos. | a total of 23 species from 14 families of the digenea have been studied in chick embryos, mainly on the chick chorioallantoic membrane (cam). most species for which cultivation has produced ovigerous adults in chick embryos have been avian digeneans with progenetic metacercariae. less success has been obtained with the hermaphroditic, non-progenetic, economically important trematodes such as fasciolids and echinostomatids, although post-metacercarial development has been achieved for fasciola he ... | 1991 | 2069072 |
| cultivation of clinostomum marginatum (digenea: clinostomatidae) metacercariae in vitro, in chick embryo and in mouse coelom. | metacercariae of clinostomum marginatum obtained from naturally infected perca flavescens were cultured by 5 methods. in vitro cultivation at 37 c in twice daily changes of tyrode's, na-poor tyrode's, and eagle's media failed to produce ovigerous adults after 4-5 days. metacercariae placed on the chorioallantois of week-old chick embryos at 37 c migrated to the albumen. only 8 of 123 worms recovered were ovigerous after 4-7 days in ovo. best success occurred with metacercariae injected in groups ... | 1990 | 2380859 |
| fine structure and permeability of the metacercarial cyst wall of clinostomum marginatum (digenea). | encysted metacercariae of clinostomum marginatum (digenea) were obtained from tissues of yellow perch, perca flavescens. the outermost wall (host response) as seen under electron microscopy consisted of a single, fibrous tissue layer, 10-25 micron thick. the tissue contained flattened fibrocytes, small fat deposits, and vacuoles embedded between layers of collagen fibers. the cyst cavity was filled with small vesicles, crystals, and debris. no layer corresponding to the primary (parasite-produce ... | 1988 | 3387408 |
| clinostomum complanatum and clinostomum marginatum (rudolphi, 1819) (digenea: clinostomidae) are separate species based on differences in ribosomal dna. | infections by metacercariae of clinostomum (leidy, 1856) species adversely affect aquacultured fish and are potentially transmissible to humans. molecular methodologies are efficient tools, which enable diagnosis of all life-history stages of trematodes in their diverse hosts. the small subunit of ribosomal dna genes of adults of the old world clinostomum complanatum (rudolphi, 1819) and the new world clinostomum marginatum (rudolphi, 1819), obtained from a little egret egretta garzetta (linnaeu ... | 2004 | 15165071 |
| defeating diplostomoid dangers in usa catfish aquaculture. | diplostomoid digenean metacercariae have caused widescale mortalities of channel catfish, ictalurus punctatus (rafinesque), at aquaculture farms in louisiana, mississippi and arkansas, usa. originally, based on a tentative diagnosis, the industry considered the primary harmful agent to be an introduced species from europe, bolbophorus confusus (krause, 1914), frequently reported from the american white pelican, pelecanus erythrorhynchos gmelin. our group has now shown, using its 1-2 plus three m ... | 2004 | 15357393 |
| prevalence and pathology of helminths of ciconiiform birds from the brazilian swamplands. | the prevalence of helminths recovered from 108 birds representing eight species of ciconiiformes from the brazilian west-central region are presented. the digeneans ascocotyle (phagicola) longa, clinostomum marginatum, cotylotretus grandis, ithyoclinostomum dimorphum, the nematodes contracaecum multipapillatum, desmidocercella ardeae, eustrongylides ignotus, and the cestode valipora mutabilis were identified. contracaecum multipapillatum was the most prevalent species and e. ignotus the most pat ... | 2004 | 15469630 |
| some condition characteristics of a yellow perch population heavily parasitized by clinostomum marginatum. | | 1949 | 18119168 |
| some condition characteristics of a yellow perch population heavily parasitized by clinostomum marginatum. | | 1948 | 18884212 |
| distribution, abundance, and genetic diversity of clinostomum spp. metacercariae (trematoda: digenea) in a modified ozark stream system. | abstract land-use alterations can have profound influences on faunal distributions, including host-parasite relationships. yellow grub trematodes ( clinostomum spp.) have complex life cycles involving 3 hosts: a snail, a fish or amphibian, and a bird. here, we analyze the distribution, prevalence, intensity, abundance, and genetic diversity of encysting metacercariae of clinostomum spp. in salamanders and fishes throughout an aquatic system that includes a natural ozark stream and man-made ponds ... | 2011 | 21506775 |
| morphological and molecular differentiation of clinostomum complanatum and clinostomum marginatum (digenea: clinostomidae) metacercariae and adults. | abstract the separation of clinostomum complanatum rudolphi, 1814 and clinostomum marginatum rudolphi, 1819 has long been unclear. recent data confirm the validity of the junior species, c. marginatum, by ~1% differences in its 18s rdna sequences. we collected adults and metacercariae of c. complanatum and c. marginatum and found reliable morphological differences in the genital complex at both developmental stages. in addition, we identified basic morphometrics (distance between suckers, body w ... | 2011 | 21711099 |
| morphological and molecular characterization of clinostomum detruncatum (trematoda: clinostomidae) metacercariae infecting synbranchus marmoratus. | a complete morphological description, supported by molecular data, of clinostomum detruncatum metacercariae is reported in this study. the metacercariae were found infecting synbranchus marmoratus from the paraná river, municipality of guaíra, paraná state, brazil. the taenioidean uterus is the main morphological characteristic of this species. both neighbor-joining (nj) and maximum likelihood (ml) trees showed 2 clear separate clusters grouping together the species from the palearctic region (c ... | 2016 | 26509452 |
| using mitochondrial and ribosomal dna sequences to test the taxonomic validity of clinostomum complanatum rudolphi, 1814 in fish-eating birds and freshwater fishes in mexico, with the description of a new species. | the taxonomic history and species composition of the genus clinostomum has been unstable. two species, clinostomum complanatum rudolphi, 1814 and clinostomum marginatum rudolphi, 1819, have been particularly problematic and its validity has been disputed for nearly 200 years. in this paper, we have made use of an integrative taxonomy approach, and we used, in first instance, dna sequences of two genes (cox1 and its) to test the validity of c. complanatum, a species apparently widely distributed ... | 2013 | 23708398 |
| clinostomum album n. sp. and clinostomum marginatum (rudolphi, 1819), parasites of the great egret ardea alba l. from mississippi, usa. | members of the genus clinostomum leidy, 1856, colloquially known as yellow grubs, are cosmopolitan parasites of piscivorous birds, freshwater snails, fish and amphibians. in the southeastern united states, piscivorous birds present a continuous challenge for producers of farm-raised catfish. ciconiiform birds are common hosts of clinostomum spp. in north america and are endemic on most commercial catfish operations. the great egret ardea alba l. is an avian predator often found foraging on comme ... | 2017 | 28062984 |
| austrodiplostomum sp., bolbophorus sp. (digenea: diplostomidae), and clinostomum marginatum (digenea: clinostomidae) metacercariae in inland silverside menidia beryllina from catfish aquaculture ponds, with notes on the infectivity of austrodiplostomum sp. cercariae in channel catfish ictalurus punctatus. | in the southeastern usa, catfish aquaculture is burdened by predation from piscivorous birds and the digenetic trematodes they carry. in addition to cultured ictalurid fish, other forage or incidental fish species inhabit catfish production ponds. of these, the inland silverside menidia beryllina was recently found to harbor larval metacercariae of several trematode species. three species of metacercariae were reported, two of which represent the first morphological descriptions of an austrodipl ... | 2016 | 27539726 |
| communities of parasite metazoans in piaractus brachypomus (pisces, serrasalmidae) in the lower amazon river (brazil). | the aim of this study was to investigate the component community of parasite metazoans of piaractus brachypomus in the lower amazon river, northern brazil. from 34 necropsied fish, 27,384 metazoan parasites were collected, such as anacanthorus spathulatus, mymarothecium viatorum and notozothecium janauachensis (monogenoidea); spectatus spectatus and contracaecum sp (nematoda); clinostomum marginatum and dadaytrema oxycephala (digenea); and argulus carteri and ergasilus sp. (crustacea). the domin ... | 2016 | 27334815 |
| communities of parasite metazoans in piaractus brachypomus (pisces, serrasalmidae) in the lower amazon river (brazil). | the aim of this study was to investigate the component community of parasite metazoans of piaractus brachypomus in the lower amazon river, northern brazil. from 34 necropsied fish, 27,384 metazoan parasites were collected, such as anacanthorus spathulatus, mymarothecium viatorum and notozothecium janauachensis (monogenoidea); spectatus spectatus and contracaecum sp (nematoda); clinostomum marginatum and dadaytrema oxycephala (digenea); and argulus carteri and ergasilus sp. (crustacea). the domin ... | 2016 | 27304520 |
| seasonal pattern in parasite infracommunities of hoplerythrinus unitaeniatus and hoplias malabaricus (actinopterygii: erythrinidae) from the brazilian amazon. | the present study investigated the effects of seasonal variation in parasites infracommunities of hoplerythrinus unitaeniatus and hoplias malabaricus from a tributary of amazon river. for h. unitaeniatus and h. malabaricus, 11 parasite species were similar, and greatest parasite richness occurred during the rainy season. ichthyophthirius multifiliis was the dominant parasite species for both hosts. in h. unitaeniatus, infection by whittingtonocotyle caetei, whittingtonocotyle jeju, urocleidoides ... | 2016 | 26751882 |
| structure of the parasites communities in two erythrinidae fish from amazon river system (brazil). | this study compared the parasite communities of hoplias malabaricus and hoplerythrinus unitaeniatus from amazon river system. hoplias malabaricus were infected by ichthyophthirius multifiliis, piscinoodinium pillulare, tetrahymena sp., urocleidoides eremitus, braga patagonica, metacercariae of clinostomum marginatum, procamallanus (spirocamallanus) inopinatus, larvae of contracaecum sp. and larvae of nomimoscolex matogrossensis. hoplerythrinus unitaeniatus were also infected by these same specie ... | 2015 | 26083690 |
| experimental and molecular study of cercariae of clinostomum sp. (trematoda: clinostomidae) from biomphalaria spp. (mollusca: planorbidae) in brazil. | despite the large number of reports of species of clinostomum from vertebrate hosts in south america, studies evaluating the molluscan transmitters of these parasites are scarce. in the present study, clinostomatoid cercariae shed from 0.02% (4/17,485) specimens of biomphalaria spp., collected at the pampulha reservoir, belo horizonte, minas gerais, brazil, were used for experimental infection of poecilia reticulata . samples of cercariae from molluscs and metacercariae experimentally obtained f ... | 2015 | 25090192 |
| parasites of two native fishes in adjacent adirondack lakes. | this survey of parasites in 2 adjacent lakes is the first of its kind in the adirondack park of new york state. wolf lake is designated as a heritage lake whereas nearby deer lake is limnologically similar but has at least 5 introduced fish species. both lakes have 2 native species, i.e., white sucker (catostomus commersoni) and redbreast sunfish (lepomis auritus), which were the focus of this study. parasite communities of both hosts were surveyed and compared between each lake and were statist ... | 2013 | 23384764 |
| ectoparasites and endoparasites community of ageneiosus ucayalensis (siluriformes: auchenipteridae), catfish from amazon river system in northern brazil. | this study investigated the community of ectoparasites and endoparasites in ageneiosus ucayalensis (auchenipteridae) of a tributary from the amazon river system, in northern brazil. of 34 fish examined, 100% were parasitized by ichthyophthirius multifiliis, cosmetocleithrum bulbocirrus, demidospermus sp., metacercariae of genarchella genarchella, clinostomum marginatum and herpetodiplostomum sp., procamallanus (spirocamallanus) belenensis, cucullanus ageneiosus and larvae of contracaecum sp. dig ... | 2017 | 28848252 |
| structure of parasites community in chaetobranchopsis orbicularis (cichlidae), a host from the amazon river system in northern brazil. | the aim of this paper was to investigate the component communities of parasites in chaetobranchopsis orbicularis from a tributary of the amazon river system, in northern brazil. in 32 fish examined, 902,551 parasites were collected, including ichthyophthirius multifiliis, piscinoodinium pillulare, sciadicleithrum geophagi, posthodiplostomum sp., clinostomum marginatum, echinorhynchus paranensis, neoechinorhynchus pterodoridis, and dolops longicauda. i. multifiliis was the dominant and abundant p ... | 2017 | 28667520 |
| digenea parasites of acestrorhynchus falcirostris (osteichthyes, acestrorhynchidae) in the state of amazonas, brazil. | this study presents the helminthofauna of digenean parasites of acestrorhynchus falcirostris in the state of amazonas (brazil). eight species belonging to four families were recovered: metacercariae of austrodiplostomum compactum (diplostomidae) and clinostomum marginatum (clinostomidae) and mature specimens of bellumcorpus majus, prosorhynchoides carvajali, rhipidocotyle santanaensis (bucephalidae); prosthenhystera obesa (callodistomidae); genarchella genarchella (derogenidae) and phyllodistomu ... | 2017 | 29069159 |
| diversity of parasites in wild astronotus ocellatus (perciformes, cichlidae), an ornamental and food fish in brazil. | the community composition of parasites was characterized in astronotus ocellatus from a tributary of the amazon river, northern brazil. the prevalence was 87.9%, and a total of 526,052 parasites were collected, with a mean of 15,941 parasites per host. nine taxa of ecto- and endo-parasites were identified, but ichthyophthirius multifiliis was the dominant species, while piscinoodinium pillulare, clinostomum marginatum and argulus multicolor were the least prevalent parasites. the parasite commun ... | 2017 | 29044314 |