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The ultrastructure of penetrating stages of Babesia major infecting the ovary of Haemaphysalis punctata

Published online by Cambridge University Press:  06 April 2009

S. P. Morzaria ,
Patricia Bland  and
D. W. Brocklesby
S. P. Morzaria
Affiliation:
Agricultural Research Council, Institute for Research on Animal Diseases, Compton, nr Newbury, Berks
Patricia Bland
Affiliation:
Agricultural Research Council, Institute for Research on Animal Diseases, Compton, nr Newbury, Berks
D. W. Brocklesby
Affiliation:
Agricultural Research Council, Institute for Research on Animal Diseases, Compton, nr Newbury, Berks
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Extract

The ultrastructure of penetrating stages of Babesia major merozoites responsible for causing trans–ovarian infection of the tick Haemaphysalis punctala was studied. These merozoites were different from forms of other Babesia species previously described in the tick in that they were highly pleomorphic. Most of the organelles found in these forms were similar to those found in other stages: however, the apical complex was found to be very active. Micronemes were found to the apical complex was found to be very active. Micronemes were found to be predominant in the cytoplasm of these merozoites and a cytoplasmic projection anterior to the polar ring and bounded by concentric rings was visible. A polar ring with radiating ribs, and microtubules was present. It is thought that the apical complex of these merozoites plays an important role in assisting the parasite to infect the ovary of the tick.

Type
Research Article
Information
Parasitology , Volume 75 , Issue 1 , August 1977 , pp. 125 - 130
Copyright
Copyright © Cambridge University Press 1977

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References

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