| oral pharmacological treatments for parasitic diseases of rainbow trout oncorhynchus mykiss. i: hexamita salmonis. | various drugs were evaluated as regards efficacy for the treatment of hexamita salmonis infection in rainbow trout. the results confirm the efficacy of nitroimidazoles: infection was completely eradicated not only by metronidazole (which has been recommended previously for the treatment of hexamitosis), but also by benznidazole, ronidazole and secnidazole, which have not been assayed previously. the non-nitroimidazoles albendazole, aminosidine, diethylcarbamazine and nitroscanate also completely ... | 1998 | 9653458 |
| in vitro culture of the flagellate protozoan hexamita salmonis. | trophozoites of hexamita salmonis, asserted pathogen of juvenile salmonid fishes, were isolated from two species of pacific salmon hosts and cultured repeatedly in an organic medium saturated with nitrogen. primary isolates and serial subcultures usually exhibited five- to tenfold population increases per passage. | 1963 | 17788053 |
| morphology of diplomonad flagellates: spironucleus torosa n. sp. from atlantic cod gadus morhua l., and haddock melanogrammus aeglefinus (l.) and hexamita salmonis moore from brook trout salvelinus fontinalis (mitchill). | a diplomonad flagellate, spironucleus torosa n. sp. is described from atlantic cod gadus morhua and haddock melanogrammus aeglefinus. this is believed to be the 1st confirmed report of spironucleus from a marine fish. organisms swimming in the rectal lumen were broadly pyriform to elongate, and measured 10.5-18.6 microns long and 3.2-13.3 microns wide; other elongate organisms were attached to the rectal epithelium, via apical extensions appearing continuous with the microvilli. the posterior en ... | 1990 | 2213651 |
| parasite infections in danish trout farms. | samples from 5 danish freshwater trout farms rearing rainbow trout (oncorhynchus mykiss) were examined for parasite infections from october 1993 until november 1994 and recorded parasites are listed. in addition, results from an examination of a mariculture net cage system are presented as well. a total of 10 metazoan and 10 protozoan parasites were recorded. the metazoans included gyrodactylus derjavini, gyrodactylus salaris, eubothrium crassum, triaenophorus nodulosus, proteocephalus sp., dipl ... | 1995 | 7502946 |
| ultrastructure of spironucleus salmonis n. comb. (formerly octomitus salmonis sensu moore 1922, davis 1926, and hexamita salmonis sensu ferguson 1979), with a guide to spironucleus species. | diplomonad flagellates can be associated with significant morbidity and mortality in fishes, particularly in farmed salmonids. diagnosis using only light microscopy is limited, and species cannot be confirmed. we therefore undertook a comprehensive transmission electron microscopy study of 20 trophozoites from the intestine of farmed juvenile rainbow trout oncorhynchus mykiss from northern ireland (reported as hexamita salmonis by ferguson in 1979). re-assignment to the genus spironucleus was de ... | 2004 | 15352524 |
| ultrastructure and molecular diagnosis of spironucleus salmonis (diplomonadida) from rainbow trout oncorhynchus mykiss in germany. | diplomonad flagellates infect a wide range of fish hosts in aquaculture and in the wild in north america, asia and europe. intestinal diplomonad infection in juvenile farmed trout can be associated with morbidity and mortality, and in germany, diplomonads in trout are commonly reported, and yet are poorly characterised. we therefore undertook a comprehensive study of diplomonads from german rainbow trout oncorhynchus mykiss, using scanning and transmission electron microscopy, and sequencing of ... | 2007 | 17523542 |