spironucleosis (hexamitiasis, hexamitosis) in the ring-necked pheasant (phasianus colchicus): detection of cysts and description of spironucleus meleagridis in stained smears.trophozoites and cysts of spironucleus (hexamita) meleagridis were detected in the intestinal fluid and mucus of pheasant poults with spironudeosis (hexamitiasis, hexamitosis) following staining with heidenhain iron hematoxylin (hih) and the romanowsky-type stain hemacolor. their morphology was consistent with that of flagellates of the genus spironucleus, and bright-field morphologic observations were confirmed by transmission electron microscopy. cysts occurred mostly within intestinal mucus, ...200515839427
hexamita infection associated with diarrhoea and stunting in native turkey poults.hexamita sp. was identified in 8 cases of sixty (13.3%) stunted diarrhoeic 1- 12- week old native turkey poults. large numbers of the flagellated parasites were found within the dilated crypts of lieberkuhn of ileum and jejunum. in tem studies on the parasagittal section of the parasite, elongated flagellated binuclear parasite was found. the morphological characteristics of the seen protozoan are similar with those described for hexamita meleagridis. the parasite could be considered as an intes ...201021399592
phylogeny of spironucleus (eopharyngia: diplomonadida: hexamitinae).diplomonad flagellates from the genera spironucleus and hexamita (hexamitinae) inhabit the digestive tract of a variety of animal hosts, some as important pathogens, and others as commensals. species descriptions of many diplomonads have been based on light microscopy only, causing many taxa to be misidentified. presently, electron microscopy is considered the appropriate tool for description of diplomonads. the existence of morphologically very similar genotypes/species has in addition prompted ...200717292667
systemic spironucleosis in 2 immunodeficient rhesus macaques (macaca mulatta).spironucleus spp are parasites of fish and terrestrial vertebrates, including mice and turkeys, that rarely cause extraintestinal disease. two rhesus macaques (macaca mulatta) were experimentally inoculated with simian immunodeficiency virus mac251. both progressed to simian acquired immune deficiency syndrome within 1 year of inoculation and developed systemic protozoal infections in addition to common opportunistic infections, including rhesus cytomegalovirus, rhesus lymphocryptovirus, and rhe ...201020351359
hexamita meleagridis (spironucleus meleagridis) infection in chukar partridges associated with high mortality and intracellular outbreak of infectious catarrhal enteritis, associated with the flagellated protozoan spironucleus meleagridis (syn. hexamita meleagridis), is reported from a commercial flock of chukar partridges in california. the disease affected birds between the ages of 4 and 6 wk and resulted in diarrhea, listlessness, depression, and high mortality. concurrent infection with other intestinal pathogens, including cryptosporidia, group e salmonella, long-segmented filamentous microorganisms (lsfmos), and ...200415529998
hexamita meleagridis. 195313111280
parasites from farmed ostriches (struthio camelus) and rheas (rhea americana) in europe.during a 4-year-period, more than 500 ostriches and several rheas, all born in european countries and raised in spain and portugal, have been analyzed for the presence of ectoparasites and endoparasites. a total of 29 parasite species have been found, most of them of the gastrointestinal tract. some of the helminth species found may represent spureous parasitosis, as only the eggs (of an ascarid and a trematode) were found in some samples. from the organisms identified, the ectoparasites (lice-s ...200212072221
[detection of hexamita meleagridis in bulgaria].protozoa of the hexamita meleagridis species were isolated for the first time in this country. the infection was observed in turkeys at the age of 2 to 5 weeks. the parasite was shown to have oval body measuring 8.16 mm (length) and 3.55 mm (width) two nuclei, and eight symmetrically attached filaments. the latter were shown to serve hexamita organisms which exhibit exclusive motility. the identification of the parasite was made through the study of smears (of the content of small intestines wit ...19852409663
spironucleus meleagridis, an enteric diplomonad protozoan of cockatiels (nymphicus hollandicus): preliminary molecular characterization and association with clinical disease.a flagellated enteric diplomonad protozoan consistent with spironucleus meleagridis (formerly hexamita meleagridis) associated with gastrointestinal disease and mortality in psittacine birds including cockatiels (nymphicus hollandicus) has been sporadically described in the literature. however, molecular characterization of psittacine protozoal isolates had not yet been performed. the 16s rrna gene from a protozoan persistently shed in the feces in a small group of cockatiels demonstrated a 98% ...201525595477
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