development of khawia sinensis hsü, 1935 (cestoda: caryophyllidea) in the fish host.the development of the tapeworm khawia sinensis has been observed up to the stage of sexually mature parasites releasing eggs in an experimentally infected definitive host (cyprinus carpio) at 15-16 degrees c. juvenile, maturing, adult and gravid tapeworms were found 2-12, 19-24, 36-62, and 78-91 days post infection, respectively. no apparent size difference between tapeworms from carp kept at 20-22 degrees c, examined 1-16 days post infection, and those from 15-16 degrees c was observed. in nat ...19911808032
early development of khawia sinensis hsü, 1935 (cestoda: caryophyllidea), a carp parasite.the development of the tapeworm khawia sinensis parasitizing carp (cyprinus carpio l.) has been studied from the release of cestode eggs into water to the formation of infective procercoids in the intermediate host under laboratory conditions. the rate of embryonal development is greatly influenced by the water temperature. while at 5 degrees c the development of oncospheres was not recorded, at 10-12 degrees c, 15 degrees c, 20-22 degrees c, and 23-24 degrees c oncospheres were fully formed aft ...19911937272
[treatment of carp in khawia sinensis hsu infection]. 19715140684
[acid phosphatase activity in homogenates of tapeworms khawia sinensis (hsü, 1935) and bothriocephalus gowkongensis (yen, 1955)]. 19846516401
[acid phosphatase activity in the internal organs of carp (cyprinus carpio l.) infected with tapeworm khawia sinensis (hsü, 1935) and bothriocephalus gowkongensis (yeh, 1955)]. 19846516402
[biology and pathogenetic action of bothriocephalus gowkongensis yeh, 1955 and khawia sinensis hsu, 1935]. 19817345742
[histopathological changes and localization of tapeworm khawia sinensis in the intestine of carps (cyprinus carpio l.)]. 19817345743
[level of total protein and its fractions in the serum of carps (cyprinus cario l.) infected with the tapeworm khawia sinensis hsu, 1935]. 19817345744
[aspartate and alanine aminotransferase activity in the alimentary tract of carps (cyprinus carpio l.) infected with tapeworms bothriocephalus gowkongensis yeh, 1955 or khawia sinensis hsü, 1935]. 19817345746
[localization and activity of several enzymes in tissues of bothriocephalus acheilognathi and khawia sinensis tapeworms parasitizing carp].in this study, an attempt has been made to compare the most common species of tapeworms in carp: non-segmentary khawia sinensis and segmentary bothriocephalus acheilognathi on the basis of histoenzymatic examination of 8 enzymes, i.e. alkaline phosphatase, acid phosphatase, adenosine triphosphatase, nonspecific esterase alfa, succinic dehydrogenase, lactate dehydrogenase, leucine aminopeptidase and gamma-glutamylo transferase.19938237009
the in vitro effect of khawia sinensis on leucocyte activity in carp (cyprinus carpio).the interactions between khawia sinensis (cestoda: caryophyllidea), a pathogenic tapeworm of carp, and host leucocytes has been investigated in vitro by monitoring blastogenesis in pronephric, splenic and thymic lymphocytes and apoptosis of pronephric leucocytes. both parasite homogenate and excretory/secretory (e/s) products were found to suppress lymphocyte blastogenesis at high concentrations (346.6-98.8 microg ml-1) whilst cell stimulation occurred at low concentrations (49.4-19.8 microg ml- ...19979166442
[parasites taxonomic diversity of agnathans and fishes of volga river basin. iv. amphilinida and cestoda].the checklist of amphilinida and cestoda of fish in the volga basin is presented with indication of host and distribution in different areas of the basin. the data on cestodes of 51 fish species are given. the checklist includes 40 species of cestodes and 1 species of amphilins. the families caryophyllaeidae (8 species) and proteocephalidae (10 species) are the most numerous. cestodes bothriocephalus acheilognathi and khawia sinensis have been introduced into the volga basin occasionally during ...200717578242
re-establishment of the fish parasite fauna in the tisa river system (slovakia) after a catastrophic pollution extensive survey of helminth parasites in 1,316 freshwater fish representing 31 species from two aquatic ecosystems in southeastern slovakia characterized by different level of environmental pollution was carried out. the helminth species diversity was compared between the tisa river, heavily polluted with cyanides and heavy metals after a series of ecological disasters in 2000, and the less anthropogenically influenced latorica river. a parasitological survey found 31 gastrointestinal helmin ...200919214574
tapeworm khawia sinensis: review of the introduction and subsequent decline of a pathogen of carp, cyprinus carpio.the asian tapeworm khawia sinensis hsü, 1935 (cestoda: caryophyllidea) is a large-sized (body length up to 11.5 cm) monozoic (unsegmented) parasite of common carp (cyprinus carpio l.) that may cause mortality of young fish (fry). since the 1960s, this cestode successfully colonized a large part of europe, including the british isles, north america and japan. however, a review of published records provides evidence that the tapeworm k. sinensis, invasive parasite of carp, has become less common d ...200919520514
spermatological characters of the caryophyllidean cestode khawia sinensis hsü, 1935, a carp parasite.spermatological characters of the caryophyllidean tapeworm khawia sinensis (lytocestidae), a carp parasite, have been investigated for the first time. the process of the spermatozoon formation corresponds in basic pattern to that of khawia armeniaca (brunanská and poddubnaya, parasitol res 99: 449-454, 2006). the presence of dense material at the early stages of spermiogenesis, the intercentriolar body, flagellar rotation (free flagellum plus flagellar bud), and a complete proximodistal fusion h ...200919727822
classical and molecular cytogenetics of khawia sinensis (cestoda: caryophyllidea), invasive parasite of carp, cyprinus carpio.chromosomes of the invasive tapeworm khawia sinensis (caryophyllidea), the specific parasite of common carp, were analyzed by means of conventional giemsa staining and using fluorescent dapi and yoyo-1 dyes, silver staining, and fluorescent in situ hybridization (fish) with 18s rdna probe. the karyotype is composed of eight pairs of metacentric and telocentric chromosomes (2n = 16, n = 3m + 5t, tcl = 42.54 μm). constitutive heterochromatin was located at pericentromeric regions of all pairs, exc ...201122167367
Early intrauterine embryonic development in Khawia sinensis Hsü, 1935 (Cestoda, Caryophyllidea, Lytocestidae), an invasive tapeworm of carp (Cyprinus carpio): an ultrastructural study.Intrauterine embryonic development in the caryophyllidean tapeworm Khawia sinensis has been investigated using transmission electron microscopy and cytochemical staining with periodic acid-thiosemicarbazide-silver proteinate for glycogen. Contrary to previous light microscopy findings that reported the release of non-embryonated eggs of K. sinenesis to the external environment, the present study documents various stages of embryonation (ovoviviparity) within the intrauterine eggs of this cestode ...201121894510
revision of khawia spp. (cestoda: caryophyllidea), parasites of cyprinid fish, including a key to their identification and molecular phylogeny.monozoic cestodes of the genus khawia hsü, 1935 (caryophyllidea: lytocestidae), parasites of cyprinid fish in europe, asia, africa and north america, are revised on the basis of taxonomic evaluation of extensive materials, including recently collected specimens of most species. this evaluation has made it possible to critically assess the validity of all 17 nominal species of the genus and to provide redescriptions of the following seven species considered to be valid: khawia sinensis hsü, 1935 ...201122053617
fish tapeworm khawia sinensis: an indicator of environmental microcystins?parasites have recently been recognized as accumulation indicators that take up and bio-concentrate substances from environmental pollution. interestingly, helminths of fish are known to accumulate metals from the ambient environment and to contain several orders of magnitude higher concentrations than hosts. while the majority of reports mention inorganic toxin accumulation in parasites, studies concerning effects of organic pollution are infrequent and little is known about the potential of pa ...201324362088
cytocomposition of the vitellarium in khawia sinensis hsü, 1935 (cestoda, caryophyllidea, lytocestidae): another caryophyllidean species with lamellar bodies and lipids.the vitellarium of the invasive caryophyllidean tapeworm khawia sinensis hsü, 1935 from carp cyprinus carpio l. was examined by means of transmission electron microscopy and cytochemical staining for glycogen with periodic acid-thiosemicarbazide-silver proteinate (pa-tsc-sp). a vitellarium consists of numerous follicles of irregular size that are interconnected by a net of vitelline ducts. vitelline follicles are composed of vitelline cells at various stages of development that are interconnecte ...201323749090
sequence structure and intragenomic variability of ribosomal its2 in monozoic tapeworms of the genus khawia (cestoda: caryophyllidea), parasites of cyprinid fish.the sequence structure of the ribosomal internal transcribed spacer 2 (its2) was determined for six species of khawia (cestoda: caryophyllidea), parasites of cyprinid fish in the holarctic region. homologous intragenomic its2 structure was found in khawia armeniaca, khawia baltica, and khawia rossittensis; whereas divergent intragenomic its2 copies were detected in chinese, japanese, and slovak isolates of khawia sinensis and in khawia japonensis, both parasitic in common carp, and in khawia sau ...201222814768
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