study on the helminthiasis of rutilus frisii katum from the south caspian sea.four different species of helminths: anisakis spp. diplozoon paradoxum, aspidogaster limacoides and asymphylodera kubanicum were found in 1.4%, 28%, 15% and 5% of 140 rutilus frisii katum from the south caspian sea respectively. generally, the number of worms collected was low and cannot be considered pathogenic to examined fish.1978655033
fine structural observations on oocyte development in monogeneans.the ultrastructural changes accompanying oocyte differentiation in the ovaries of the monogeneans, diclidophora merlangi, diplozoon paradoxum and calicotyle kröyeri have been described. in each case, oogenesis in the ovary proceeds as far as meiotic prophase in the primary oocyte. a three-stage sequence of development based on oocyte morphology is proposed: (1) oogonia and early, immature primary oocytes are typically undifferentiated, with chromatin-laden nuclei occupying most of the cell volum ...1976967526
proceedings: fine structure of mehlis' gland and ootype in diplozoon paradoxum (monogenea: polyopisthocotylea). 19744419376
[further study of the larvae of diplozoon paradoxum von nordmann, 1832 (monogenea)]. 19715153606
the occurrence of diplozoon paradoxum nordmann, 1832 (trematoda: mongenea) in certain waters of northern england and its distribution on the gills of certain cyprinidae. 19685643566
demonstration of the nervous system in the monogenetic trematode diplozoon paradoxum nordmann by the indoxyl acetate method for esterases. 196414167849
comparative karyological analysis of four diplozoid species (monogenea, diplozoidae), gill parasites of cyprinid fishes.the present study has revealed new data on chromosome complements of diplozoid parasites, namely diplozoon paradoxum from freshwater bream abramis brama, paradiplozoon bliccae from white bream blicca bjoerkna, paradiplozoon sapae from white-eye bream ballerus sapa, and paradiplozoon nagibinae from zope ballerus ballerus. particularly, d. paradoxum is characterized by four pairs (2n=8) of long (up to 22.1 μm) chromosomes: pairs 1, 2, and 3 are metacentric and pair 4 acrocentric. karyotypes of thr ...201020981442
treatment of fish parasites. 2. effects of praziquantel, niclosamide, levamisole-hcl, and metrifonate on monogenea (gyrodactylus aculeati, diplozoon paradoxum).in research for successful treatment of fish parasitized by monogeneans, four substances (praziquantel, niclosamide, levamisole-hcl, and metrifonate) were tested in vivo against gyrodactylus aculeati parasitizing the skin of sticklebacks (gasterosteus aculeatus). fish were incubated in water containing different solutions of the drugs. praziquantel, niclosamide and levamisole-hcl were effective against gyrodactylus aculeati. praziquantel caused irreversible lesions in the parasite tegument (begi ...19873615395
treatment of fish parasites. 4. effects of sym. triazinone (toltrazuril) on monogenea.for chemotherapy in fish parasitized by monogeneans, toltrazuril was tested in vivo and in vitro against gill-parasitizing species (dactylogyrus vastator, d. extensus, d. cornu, pseudodactylogyrus anguillae, diplozoon paradoxum, dip. homoion) as well as the skin-parasitizing species gyrodactylus arcuatus. naturally infected fish were incubated at 20 degrees c for 0.3, 1, 2, 3, 4, and 6h in water containing 0.5, 10, 20, 30, and 50 microgram toltrazuril/ml. in general, the damage observed resulted ...19883237675
[fish parasites as bioindicators of the pollution of bodies of water].the paper presents the results of studies on the effect of wastes of the cherepovets iron-and-steel works containing phenol, naphthaline and oil products on fish parasites of the sheksna part of the rybinsk water reservoir (the volga river system). it has been shown that the number of highly sensitive ectoparasites of abramis brama (protozoa, dactylogyrus monogeneans, ergasilus sieboldi crustaceans and caspiobdella fadejewi leeches) considerably decreases in the zone of pollution. it has been fi ...19921299804
topographic specificity of diplozoon paradoxum nordmann, 1832 (monogenea: diplozoidae) in the bream, abramis brama (linnaeus, 1758) in the vistula lagoon, poland.location of the monogenean diplozoon paradoxum on the branchial arches of the vistula lagoon bream is described. the highest number of parasites was found on the first gill arch, followed by the numbers recordedon the second and third arches; the lowest numbers of the monogenean were typical of the fourtharch. about 70% of the monogeneas were found to dwell on the dorsal part of the branchial arch. it is concluded that the distribution of parasites is controlled by the direction of water flow th ...200116886411
identification of european diplozoids (monogenea, diplozoinae) by restriction digestion of the ribosomal rna internal transcribed spacer.the second internal transcribed spacer (its2) of the ribosomal rna genes of diplozoon paradoxum and paradiplozoon nagibinae were amplified and sequenced. the polymerase chain reaction product of d. paradoxum was bigger (840 bp) than that of p. nagibinae (820 bp). there was no intraspecific variability recorded in sequences from either species. sequence comparisons and its2 restriction fragment length polymorphism (rflp) pattern of 8 european diplozoid species aimed to resolve their identificatio ...200415357076
abnormalities of the attachment clamps of representatives of the family diplozoidae.a comparative study has been made of the haptoral morphology of four species of diplozoon (monogenea: diplozoidae) from the gills of fish exposed to different levels of water pollution in two river systems in eastern europe. an examination of the haptors of paradiplozoon homoion (bychowsky & nagibina 1959), paradiplozoon ergensi (pejcoch 1968) and paradiplozoon megan (bychowsky & nagibina 1959) from chub caught in the river morava, czech republic and of diplozoon paradoxum (nordmann 1832) from b ...200212363379
treatment of fish parasites. 1. praziquantel effective against monogenea (dactylogyrus vastator, dactylogyrus extensus, diplozoon paradoxum). 19854082732
resilin-like protein in the clamp sclerites of the gill monogenean diplozoon paradoxum nordmann, 1832.resilin is a soft and elastic protein, which is found in many exoskeletal structures of arthropods. proteins with similar chemical properties have been described for other invertebrates including monogenean fish parasites. however, for the latter taxon no clear microscopic evidence for a resilin-like protein has been shown so far. here, we present the results of detailed microscopic analyses of the clamp sclerites (attachment devices) of the monogenean diplozoon paradoxum. toluidine blue, which ...201322939032
attachment ability of a clamp-bearing fish parasite, diplozoon paradoxum (monogenea), on gills of the common bream, abramis brama.monogeneans, which are mainly fish ectoparasites, use various types of haptoral (posterior) attachment apparatus to secure their attachment onto their hosts. however, it remains unclear how strongly a monogenean can attach onto its host. in the present study, we aimed for the first time to (1) measure pull-off forces required to detach a pair of clamp-bearing monogeneans, diplozoon paradoxum, from gills of abramis brama and (2) determine the contribution of muscles to the clamp movements. a mean ...201323580722
aspects of the morphology of the juvenile life stages of paradiplozoon ichthyoxanthon avenant-oldewage, 2013 (monogenea: diplozoidae).there are eight life stages in the life-cycle of diplozoon paradoxum and limited knowledge of the life-cycle for other diplozoid genera exists. the aim of this study was to record the number of life-stages of paradiplozoon ichthyoxanthon obtained from, labeobarbus aeneus and labeobarbus kimberlyensis, in the vaal dam from 2005 to 2007. six larval life stages and one adult stage of p. ichtyoxanthon were identified from specimens collected in vitro and in situ. in vitro, eggs hatched after 21 days ...201424827093
excretory system of representatives from family diplozoidae (monogenea).diplozoons are representatives of blood-feeding ectoparasites from the family diplozoidae (polyopisthocotylea, monogenea). although these worms have been the subject of numerous taxonomical, phylogenetic, and ecological studies, the detailed study of their excretory system has remained relatively neglected. our observations focused on the morphological and ultrastructural features of the excretory apparatus of four diplozoid species: diplozoon paradoxum, eudiplozoon nipponicum, paradiplozoon bli ...201626677096
the parasite community of the nase chondrostoma nasus (l. 1758) from austrian rivers.between april 2003 and november 2006 a total of 191 individuals of the predominantly herbivorous fish species nase chondrostoma nasus (l. 1758) were examined for parasites from six river sites in austria. the following parasite taxa were recovered - ciliata: trichodina sp., chilodonella piscicola, ichthyophthirius multifiliis; myxozoa: myxobolus muelleri (cysts) and myxobolus sp. (cysts); monogenea: dactylogyrus vistulae, d. chondrostomi and dactylogyrus spp., gyrodactylus sp., diplozoon paradox ...201020831848
diversity of the parasite fauna of cyprinid (cyprinidae) and percid (percidae) fishes in the vistula lagoon, poland.a total of 2398 fish specimens (1091 percidae and 1307 cyprinidae) belonging to 16 species (3 percidae and 13 cyprinidae), caught in the polish part of the vistula lagoon were examined within december 1994-march 1997. the parasites found were identified as belonging to 63 taxa (61 species as well as diplostomum spp. flukes and glochidia unionidae gen. sp. which could not be identified to species) of the microsporea (1), protozoa (1), myxozoa (2), monogenea (10), digenea (15), cestoda (11), nemat ...200316889022
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