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The ultrastructure of a haemogregarine parasitic in Gehyra variegata (Duméril & Bibron, 1836)

Published online by Cambridge University Press:  06 April 2009

W. E. Stehbens  and
M. R. L. Johnston
W. E. Stehbens
Affiliation:
The Departments of Experimental Pathology and Zoology, Australian National University, Canberra, Australia
M. R. L. Johnston
Affiliation:
The Departments of Experimental Pathology and Zoology, Australian National University, Canberra, Australia
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Extract

The ultrastructure of the intra-erythrocytic stage of a haemogregarine in the gecko, Gehyra variegata, has been studied and numerous points of similarity to Plasmodium, Toxoplasma, Sarcocystis, Lankesterella, Eimeria and the M-organism were found. The protozoon was invested by a triple-layered pellicle, and possessed at least two micropyles. A conoid and apical rings were observed at the anterior end. Other cell constituents included nucleus, microtubules, endoplasmic reticulum, mitochondria, toxonemes and a variety of vacuoles. Loosely surrounding the parasite was an unusual convoluted membrane, which in appropriate planes of section, displayed corrugations on both surfaces. It was not clear whether this membranous structure should be regarded as an integral part of the protozoon or as an external coat which could be discarded upon emergence from the host red cell. Within its external sheath, the parasite lay in a periparasitic vacuole which was limited by a conventional unit membrane from the host red cell cytoplasm. The parasite did not exhibit any evidence of pinocytosis or phagocytosis.

Our sincere thanks are due to Dr E. H. Mercer, Professor J. D. Smyth and Dr M. J. Mackerras for advice. Miss N. Carroll gave technical assistance.

Type
Research Article
Information
Parasitology , Volume 57 , Issue 2 , May 1967 , pp. 251 - 261
Copyright
Copyright © Cambridge University Press 1967

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References

REFERENCES

Ball, G. H. (1958). A haemogregarine from a water snake, Natrix piscator, taken in the vicinity of Bombay, India. J. Protozool. 5, 274–81.CrossRefGoogle Scholar
Chapman, J. A., Murray, R. G. E. & Salton, M. R. J. (1963). The surface anatomy of Lampropedia hyalina. Proc. R. Soc. B 158, 498–513.Google ScholarPubMed
Elbers, P. F., Ververgaert, P. H. J. T. & Demel, R. (1965). Tricomplex fixation of phospholipids. J. Cell Biol. 24, 23–30.CrossRefGoogle ScholarPubMed
Farquhar, M. G. & Palade, G. E. (1963). Junctional complexes in various epithelia. J. Cell Biol. 17, 375–412.CrossRefGoogle ScholarPubMed
Garnham, P. C. C. (1963). The ultrastructure of Haemosporidia and allied protozoa with special reference to the motile stages. In Ludvík, J., Lom, J. & Vávra, J. (eds.), Progress in Protozoology, 427 pp. Prague: Publishing House of Czechoslovak Academy of Sciences.Google Scholar
Garnham, P. C. C., Baker, J. R. & Bird, R. G. (1962 a). Fine structure of cystic form of Toxoplasma gondii. Br. med. J. 1, 83–84.CrossRefGoogle ScholarPubMed
Garnham, P. C. C., Baker, J. R. & Bird, R. G. (1962 b). The fine structure of Lankesterella garnhami. J. Protozool. 8, 107–14.CrossRefGoogle Scholar
Garnham, P. C. C., Bird, R. G. & Baker, J. R. (1963). Electron microscope studies of motile stages of malaria parasites. IV. The fine structure of the sporozoites of four species of Plasmodium. Trans. R. Soc. trop. Med. Hyg. 57, 27–31.CrossRefGoogle ScholarPubMed
Garnham, P. C. C., Bird, R. G., Baker, J. R. & Bray, R. S. (1961). Electron microscope studies of motile stages of malaria parasites. II. The fine structure of the sporozoites of Laverania (= Plasmodium) falicipara. Trans. R. Soc. trop. Med. Hyg. 55, 98–112.CrossRefGoogle Scholar
Gustafson, P. V., Agar, H. D. & Cramer, D. I. (1954). An electron microscope study of Toxoplasma. Am. J. trop. Med. Hyg. 3, 1008–21.CrossRefGoogle ScholarPubMed
Hedley, R. H. & Bertaud, W. S. (1962). Electron-microscopic observations of Gromia oviformis (Sarcodinia). J. Protozool. 9, 79–87.CrossRefGoogle Scholar
Jackson, A. R. B. (1964). The pathogenesis and immunology of coccidiosis in the sheep with special reference to factors concerned in the excystation and the fine structure of oocysts and sporozoites. Ph.D. thesis, Sydney.Google Scholar
Kikkawa, Y. & Gueft, B. (1964). Toxoplasma cysts in the human heart, an electron microscopic study. J. Parasit. 50, 217–25.CrossRefGoogle ScholarPubMed
Ludvík, J. (1960). The electron microscopy of Sarcocystis miescheriana Kuhn, 1865. J. Protozool. 7, 128–35.CrossRefGoogle Scholar
Ludvík, J. (1963). Electron microscopic study of some parasitic protozoa. In Ludvík, J., Lom, J. & VÁvra, J. (eds.), Progress in Protozoology, 387 pp. Prague: Publishing House of Czechoslovak Academy of Sciences.Google Scholar
Luft, J. H. (1965). The ultrastructural basis of capillary permeability. In Zweifach, B. W., Grant, L. & McCluskey, R. T. (eds.), The Inflammatory Process, 12 pp. New York: Academic Press.Google Scholar
Mackerras, M. J. (1961). The haematozoa of Australian reptiles. Aust. J. Zool. 9, 61–122.CrossRefGoogle Scholar
Millonig, G. (1961). A modified procedure for lead staining of thin sections. J. biophys. biochem. Cytol. 11, 736–9.CrossRefGoogle ScholarPubMed
Osimani, J. J. (1942). Haemogregarina triatomae n.sp. from a South American lizard Tupinambis teguixin transmitted by the Reduviid Triatoma rebrovaria. J. Parasit. 28, 147–54.CrossRefGoogle Scholar
Pitelka, D. R. (1963). Electron-Microscopic Structure of Protozoa, 90 pp. Oxford: Pergamon Press.CrossRefGoogle Scholar
Robertson, J. D. (1957). New observations on the ultrastructure of the membranes of frog peripheral nerve fibers. J. biophys. biochem. Cytol. 3, 1043–8.CrossRefGoogle ScholarPubMed
Robertson, J. D. (1958). Structural alterations in nerve fibers produced by hypotonic and hypertonic solutions. J. biophys. biochem. Cytol. 4, 349–64.CrossRefGoogle ScholarPubMed
Robertson, J. D. (1959). The ultrastructure of cell membranes and their derivatives. Biochem. Soc. Symp. 16, 3–43.Google ScholarPubMed
Roth, T. F. & Porter, K. R. (1964). Yolk protein uptake in the oocyte of the mosquito Aedes aegypti L.J. Cell Biol. 20, 313–32.CrossRefGoogle ScholarPubMed
Rudzinska, M. A. & Trager, W. (1957). Intracellular phagotrophy by malaria parasites: an electron microscope study of Plasmodium lophurae. J. Protozool. 4, 190–9.CrossRefGoogle Scholar
Rudzinska, M. A. & Trager, W. (1959). Phagotrophy and two new structures in the malaria parasite, Plasmodium berghei. J. biophys. biochem. Cytol. 6, 103–12.CrossRefGoogle ScholarPubMed
Rudzinska, M. A. & Trager, W. (1962). Intracellular phagotrophy in Babesia rodhaini as revealed by electron microscopy. J. Protozool. 9, 279–88.CrossRefGoogle ScholarPubMed
Rudzinska, M. A., Trager, W. & Bray, R. S. (1963). Pinocytosis in intraerythrocytic parasites. Proc. XVI Int. Congr. Zool. 4, 204–7.Google Scholar
Salton, M. R. J. (1964). The Bacterial Cell Wall, 19 pp. Amsterdam: Elsevier Publishing Co.Google Scholar
Sambon, L. W. (1908). The haemogregarines of snakes. J. trop. Med. Hyg. 11, 374–7.Google Scholar
Sambon, L. W. & Seligmann, C. G. (1908). The haemogregarines of snakes. J. trop. Med. Hyg. 11, 355–8.Google Scholar
Stehbens, W. E. (1965). Ultrastructure of vascular endothelium in the frog. Q. Jl exp. Physiol. 50, 375–84.CrossRefGoogle ScholarPubMed
Stehbens, W. E. (1966 a). The ultrastructure of Lankesterella hylae. J. Protozool. 13, 63–73.CrossRefGoogle ScholarPubMed
Stehbens, W. E. (1966 b). Observations on Lankesterella hylae. J. Protozool. 13, 59–62.CrossRefGoogle ScholarPubMed
Stehbens, W. E. & Johnston, M. R. L. (1966). The viral nature of Pirhemocyton tarentolae. J. Ultrastruct. Res. 15, 543–54.CrossRefGoogle ScholarPubMed
Wenyon, C. M. (1926). Protozoology 2, 1101 pp. London: Bailli7x00E8;re, Tindall and Cox.Google Scholar
Zetterqvist, H. (1956). The ultrastructural organization of the columnar absorbing cells of the mouse jejunum. Thesis, Karolinska Institutet, Stockholm.Google Scholar