Wandering phagocytes in tissue cultures were attracted to the exoerythrocytic stages, both intracellular and extracellular, of Plasmodium fallax. They phagocytized free merozoites or schizonts that had been freed from host cells. They attempted to phagocytize large intracellular parasites.
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PLoS One
November 2017
Biology Centre of CAS, Institute of Parasitology, České Budějovice, Czech Republic.
Background: Gregarines represent an important transition step from free-living predatory (colpodellids s.l.) and/or photosynthetic (Chromera and Vitrella) apicomplexan lineages to the most important pathogens, obligate intracellular parasites of humans and domestic animals such as coccidians and haemosporidians (Plasmodium, Toxoplasma, Eimeria, Babesia, etc.
View Article and Find Full Text PDFJ Wildl Dis
October 2007
Institute of Wildlife Biology and Game Management, University of Applied Sciences, Gregor-Mendel-Strasse 33, Vienna, Austria.
We examined 130 Common Kestrel (Falco tinnunculus) representing two endemic subspecies and nine resident island populations on the Cape Verde archipelago between 1996 and 1999 to study diversity, prevalence, and intensity of hematozoa. Hematozoan diversity was very low; we detected only Plasmodium fallax, a species that is rarely found in Falconoformes, and, possibly, Haemoproteus brachiatus. Moreover, prevalence of Plasmodium fallax was low (1.
View Article and Find Full Text PDFSyst Parasitol
June 2002
Department of Biological Sciences, University of Newcastle, University Drive, Callaghan, New South Wales 2308, Australia.
During studies of amphibian sperm cryopreservation, a new species of myxosporidean parasite (Myxozoa, Myxosporae) was observed in the testes of the Australian dwarf green tree frog Litoria fallax (Peters). Myxosporidiasis was found to have no affect on L. fallax body condition or sperm numbers.
View Article and Find Full Text PDFExoerythrocytic merozoites of Plasmodium fallax in tissue culture have been observed and photographed in time-lapse cinemicrography as they invaded new host cells. Entry into the host cells was rapid and frequently several merozoites invaded the cells in rapid succession at or near the same site. The invasion proceeded at the broad (posterior) area of the merozoites, away from a filamentous process that usually held clusters of merozoites together in rosette form.
View Article and Find Full Text PDFJ Parasitol
October 1985
Wandering phagocytes in tissue cultures were attracted to the exoerythrocytic stages, both intracellular and extracellular, of Plasmodium fallax. They phagocytized free merozoites or schizonts that had been freed from host cells. They attempted to phagocytize large intracellular parasites.
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