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Studies on infection and reinfection by eugregarines

Published online by Cambridge University Press:  06 April 2009

Owen G. Harry
Owen G. Harry
Affiliation:
Department of Zoology and Comparative Physiology, The University, Birmingham
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Summary

Reinfection of the insects Tenebrio molitor and Schistocerca gregaria by the Eugregarines Gregaria polymorpha and G. garnhami respectively is not caused by the retention of the gametocyst and the release of sporocysts inside the gut. The gametocyst has to pass out from the insect gut, dehisce, and the sporocysts have to be ingested in order for reinfection to occur. Thus it is possible to stop reinfection by preventing the host from ingesting sporocysts. The development of spore ducts on the gametocyst of G. garnhami is inhibited if the gametocysts are prevented from leaving the hindgut of the locusts.

I would like to thank Professor L. H. Finlayson for his advice for many helpful discussions.

Type
Research Article
Information
Parasitology , Volume 63 , Issue 2 , October 1971 , pp. 213 - 223
Copyright
Copyright © Cambridge University Press 1971

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References

REFERENCES

Bush, S. F. (1928). A study of the gregarines of the grasshoppers of Pietermaritzburg, Natal. Annals of the Natal Museum 6, 97–169.Google Scholar
Canning, E. U. (1956). A new Eugregarine of Locusts Gregarina garnhami N.sp., parasitic in Schistocerca gregaria Forsk. Journal of Protozoology 3, 50–62.CrossRefGoogle Scholar
Chejsin, E. M. (1939). Coccidiosis of rabbits. Duration of coccidial invasion in rabbits inoculated with Eimenia magna oocysts. Annals Microbiology, Epidemiology and Parasitology 18, 201–7.Google Scholar
Harry, O. G. (1965). Studies on the early development of the Eugregarine Gregarina garnhami. Journal of Protozoology 12, 296–305.CrossRefGoogle ScholarPubMed
Harry, O. G. (1967). The effect of a Eugregarine Gregarina polymorpha (Hammerschmidt) on the Mealworm Larva of Tenebrio molitor. Journal of Protozoology 14, 539–47.CrossRefGoogle ScholarPubMed
Harry, O. G. (1969). A jar for maintaining parasite-free insects and for collecting infected faeces. Bulletin of Entomological Research 58, 833–4.CrossRefGoogle Scholar
Watson, M. E. (1915). Studies on Gregarines, Illinois Biological Monographs 2, 211–468.Google Scholar