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Gametocyte Formation by the Progeny of Single Plasmodium falciparum Schizonts
The Journal of Parasitology
Vol. 69, No. 3 (Jun., 1983), pp. 584-591
Stable URL: http://www.jstor.org/stable/3281374
Page Count: 8
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Gametocytogenesis of the malaria parasite Plasmodium falciparum was studied in monolayers of erythrocytes attached to tissue culture dishes. Merozoites produced by single schizonts in erythrocytes overlaying the monolayer infected the attached erythrocytes and produced clusters of progeny. Parasites in these readily indentifiable clusters then underwent either asexual growth or sexual differentiation. The progeny of most schizonts yielded no gametocytes. However, the progeny of those schizonts that did yield gametocytes showed a marked tendency to produce multiple gametocytes. Gametocytogenesis, therefore, was not random. Instead, the progeny of certain schizonts were committed to produce gametes. However, even those clusters containing several gametocytes also contained asexual forms. Therefore, not all merozoites of a single schizont were committed to gametocytogenesis. In those cells infected with two or more merozoites the formation of a gametocyte was usually associated with a block in the further development of other parasites.
The Journal of Parasitology © 1983 The American Society of Parasitologists