Skip to main content
    • Aa
    • Aa

The organization of the ookinete and observations on nuclear division in oocysts of Plasmodium berghei

  • Elizabeth U. Canning (a1) and R. E. Sinden (a1)

Ultramicroscopic features of the ookinete/oocyst transformation in Plasmodium berghei are described. The apical complex of organelles and some pellicular components, believed to be responsible respectively for cell penetration and body form were resorbed into the cytoplasm shortly after the ookinete came to rest under the basal lamina of the midgut wall. Within a single digitate nucleus, spindles at different phases of division were observed with kinetochores in early and late anaphase position. From the number of kinetochores the chromosome complement was estimated at 5–10.

Hide All
Aikawa M. (1971). Plasmodium: The fine structure of malaria parasites. Experimental Parasitology 30, 284320.
Aikawa M. & Beaudoin R. L. (1968). Studies on nuclear division of a malaria parasite under pyrimethamine treatment. Journal of Cell Biology 39, 749–54.
Bano L. (1959). A cytological study of the early oocysts of seven species of Plasmodium and the occurrence of post-zygotic meiosis. Parasitology 49, 559–85.
Canning E. U. & Anwar M. (1968). Studies on meiotic division in coccidial and malarial parasites. Journal of Protozoology 15, 290–8.
Canning E. U. & Sinden R. E. (1971). Nuclear division during sporogony in Plasmodium berghei. Comptes-Rendus des Multicolloque européen de Parasitologie 240–1.
Garnham P. C. C. (1965). The structure of the early sporogonic stages of Plasmodium berghei. Annales de la Société belge de médecine tropicale 45, 259–66.
Garnham P. C. C, Bird R. G., Baker J. R., Desser S. S. & El-Nahal H. M. S. (1969). Electron microscopic studies on motile stages of malaria parasites. VI. The ookinete of Plasmodium berghei yoelii and its transformation into the early oocyst. Transactions of the Royal Society of Tropical Medicine and Hygiene 63, 187–94.
Howells R. E. & Davies E. E. (1971). Nuclear division in the oocyst of Plasmodium berghei. Annals of Tropical Medicine and Parasitology 65, 451–9.
Inoué S. (1953). Polarization optical studies of the mitotic spindle. I. The demonstration of spindle fibers in living cells. Chromosoma 5, 487500.
Jokelainen P. T. (1967). The ultrastructure and spatial organisation of metaphase kinetochores in mitotic rat cells. Journal of Ultrastructure Research 19, 1944.
Ladda R. L. (1969). New insights into the fine structure of rodent malaria parasites. Military Medicine 134, 825–64.
Luykx P. (1970). Cellular Mechanisms of Chromosome Distribution. International Review of Cytology, Supplement 2yes. Academic Press.
Reynolds E. S. (1963). The use of lead citrate at high pH as an electron-opaque stain in electron microscopy. Journal of Cell Biology 17, 208–12.
Satir P. (1968). Studies on Cilia III. Further studies on the cilium tip and a ‘sliding filament’ model of ciliary motility. Journal of Cell Biology 39, 7794.
Scalzi H. A. & Bahr G. F. (1968). An electron microscopic examination of erythrocytic stages of two rodent malaria parasites, Plasmodium chaubaudi and Plasmodium vinkei. Journal of Ultrastructure Research 24, 116–33.
Schrader P. (1944). Mitosis. The movements of chromosomes in cell division. 2nd Edition. Columbia University Press.
Terzakis J. A. (1971). Transformation of the Plasmodium cynomolgi oocyst. Journal of Protozoology 18, 6273.
Vanderberg J. & Rhodin J. (1967). Differentiation of nuclear and cytoplasmic fine structure during sporogonic development of Plasmodium berghei. Journal of Cell Biology 32, C710.
Vanderberg J., Rhodin J. & Yoeli M. (1967). Electron microscopic and histochemical studies of sporozoite formation in Plasmodium berghei. Journal of Protozoology 14, 82103.
Walliker D., Carter R. & Morgan S. (1971). Genetic recombination in malaria parasites. Nature, London 232, 561–2.
Watson M. L. (1958). Staining of tissue sections for electron microscopy with heavy metals. Journal of Biophysical and Biochemical Cytology 4, 475–8.
Wolcott G. B. (1954). Nuclear fine structure and division in the malaria parasite Plasmodium vivax. Journal of Morphology 94, 353–65.
Wolcott G. B. (1957). Chromosome studies in the genus Plasmodium. Journal of Protozoology 4, 4851.
Yoeli M. & Most H. (1960). The biology of a newly isolated strain of Plasmodium berghei in a rodent host and experimental mosquito vectors. Transactions of the Royal Society of Tropical Medicine and Hygiene 54, 549–55.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

  • ISSN: 0031-1820
  • EISSN: 1469-8161
  • URL: /core/journals/parasitology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Full text views

Total number of HTML views: 0
Total number of PDF views: 10 *
Loading metrics...

Abstract views

Total abstract views: 120 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 21st October 2017. This data will be updated every 24 hours.