| mortality of young-of-the-year rainbow smelt (osmerus mordax) in lake erie associated with the occurrence of glugea hertwigi. | an extensive mortality of young-of-the-year rainbow smelt (osmerus mordax) occurred in lake erie during the fall of 1969. dead and dying smelt were observed along the north shore from west of long point in the central basin to port maitland in the eastern basin. no other fish species was involved. glugea hertwigi, a microsporidan parasite, was observed in 90% of the distressed smelt examined, and is believed to have been a major contributing factor to the mortality. | 1978 | 650791 |
| infection of american smelt in lake ontario and lake erie with the microsporidian parasite glugea hertwigi (weissenberg). | | 1972 | 4627636 |
| [monthly variations of glugea hertwigi (sporozoa: microsporida) in different tissues and organs of the freshwater smelt and the consequences of this infection on the annual massive mortality of this fish]. | | 1972 | 4632617 |
| acute infection by glugea hertwigi weissenberg in young-of-the-year rainbow smelt, osmerus eperlanus mordax (mitchill). | | 1967 | 6070675 |
| the microsporidian spore invasion tube. ii. role of calcium in the activation of invasion tube discharge. | a swelling response by the polaroplast organelle initiated microsporidian invasion tube extrusions by glugea hertwigi spores. the tumescence was induced by the displacement of internal calcium. sodium citrate, phosphate, and the calcium ionophore a23187 were effective in initiating polaroplast swelling and spore discharge; however, the addition of external cacl2 switched the expanded polaroplasts to a contracted state and blocked spore discharge. unlike cacl2, equivalent concentrations of kcl, n ... | 1982 | 6811603 |
| the microsporidian spore invasion tube. iii. tube extrusion and assembly. | the polar filaments within microsporidian spores discharges as tubes with subsecond velocity. populations of discharging tubes of glugea hertwigi spores pulse-labeled with latex particles for 1-3 s were consistently devoid of label at the distal ends; discharging tubes were completely labeled after 30- to 60-s exposure to latex. this experiment indicates that discharge tubes grow at the tip. completely assembled discharge tubes consisted of single, empty cylinders; however, incompletely discharg ... | 1982 | 7119008 |
| [the role of fish parasites in fresh-water ecosystems exemplified by a parasite of the smelt (osmerus eperlanus)]. | the european smelt osmerus eperlanus had been accidentally introduced into the ecosystem of the syamozero lake (karelia). the population of this species has achieved a high density and caused serious changes in the structure and trophic relationships of fish community of the syamozero ecosystem. the microsporidia glugea hertwigi weisenberg, 1921 has become a new and super-dominant parasite of the european smelt in this ecosystem. the invasion of microsporidia has caused a mass death of fishes, t ... | 2000 | 10862398 |
| phylogeny and morphology of glugea hertwigi from rainbow smelt osmerus mordax found in prince edward island, canada. | infection of rainbow smelt osmerus mordax with the microsporidian glugea hertwigi was diagnosed for the first time in prince edward island, canada. the prevalence of infection was 24%, 45 infected out of 187 examined fish captured in february and march 2009. both large and small xenomas of g. hertwigi observed within the submucosa of the gastrointestinal tract and along the mesentery of the host contained only mature spores. advanced and degraded xenomas associated with host reaction were descri ... | 2009 | 20066958 |
| phagocytized intracellular microsporidian blocks phagosome acidification and phagosome-lysosome fusion. | this study examines the relationship between phagosome acidification and phagosome-lysosome fusion events using phagocytized glugea hertwigi spores. the incidence of lysosome fusion with glugea spores in phagosomes of mouse peritoneal macrophages and of tetrahymena was monitored using colloidal gold and acridine orange as labels for secondary lysosomes. over 80% of the glugea phagosomes remained segregated from the labeled compartments in macrophages after 60 min; this inhibition of fusion was s ... | 1985 | 3925132 |
| occurrence of microsporidians glugea hertwigi and pleistophora ladogensis, in smelt osmerus eperlanus from two german rivers, north sea coast. | monthly samples of smelt osmerus eperlanus (linnaeus, 1758) were collected from july 1985 to may 1986, in the river elbe (germany), and examined for infections with microsporidians. two microsporidians were found: glugea hertwigi weissenberg, 1911, infecting the digestive tract and pleistophora ladogenis voronin, 1978, infecting the skeletal musculature. g. hertwigi infection led to the formation of xenomas, whereas p. ladogensis was characterized by diffuse infections, with the production of ma ... | 2016 | 27596859 |
| demonstrated efficacy of a pilot heterologous whole-spore vaccine against microsporidial gill disease in rainbow trout. | intraperitoneal vaccines using whole viable spores of the microsporidian glugea anomala or glugea hertwigi reduced the numbers of branchial xenomas by 80% and 91%, respectively, after a standard experimental infection of juvenile rainbow trout with the microsporidian loma salmonae. similar significant results were obtained when killed-spore preparations were used. | 2013 | 23825192 |