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The oocyst sporulation time of Eimeria species from the fowl

Published online by Cambridge University Press:  06 April 2009

C. C. Norton  and
M. J. Chard
C. C. Norton
Affiliation:
Central Veterinary Laboratory, MAFF, New Haw, Weybridge, Surrey KT15 3NB and Unilever Research Laboratory, Colworth House, Sharnbrook, Beds MK44 1LQ
M. J. Chard
Affiliation:
Central Veterinary Laboratory, MAFF, New Haw, Weybridge, Surrey KT15 3NB and Unilever Research Laboratory, Colworth House, Sharnbrook, Beds MK44 1LQ
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Summary

Freshly isolated oocysts were sporulated at 29°C with constant aeration. Minimum sporulation time was determined by dosing the developing oocysts at intervals of 1 h to successive groups of chickens to assess the first occurrence of infective forms. Microscopic analysis of the sporulating oocysts allowed calculation of the time required for 50% of the oocysts to complete the process. This was considered to be the most accurate determination and the most useful for comparative purposes. For 7 species of coccidia in the fowl, the 50% sporulation times were as follows: Eimeria acervulina 11·4 h; E. brunetti 38·3 h; E. maxima 38·1 h; E. mivati 19·0 h; E. necatrix 19·7 h; E. praecox 24·8 h; E. tenella 21·2 h.

Type
Research Article
Information
Parasitology , Volume 86 , Issue 2 , April 1983 , pp. 193 - 198
Copyright
Copyright © Cambridge University Press 1983

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References

REFERENCES

Duszynski, D. W. & Conder, G. A. (1977). External factors and self regulating mechanisms which may influence the sporulation of oocysts of the rat coccidium Eimeria nieschulzi. International Journal for Parasitology 7, 83–8.CrossRefGoogle ScholarPubMed
Edgar, S. A. (1955). Sporulation of oocysts at specific temperatures and notes on the prepatent period of several species of avian coccidia. Journal of Parasitology 41, 214–16.Google Scholar
Edgar, S. A. & Seibold, C. T. (1964). A new coccidium of chickens, Eimeria mivati sp.n. (Protozoa: Eimeriidae) with details of its life history. Journal of Parasitology 50, 193–204.Google Scholar
Hein, H. E. (1968). The pathogenic effects of Eimeria acervulina in young chicks. Experimental Parasitology 22, 1–11.CrossRefGoogle ScholarPubMed
Hein, H. E. (1971). Pathogenic effects of Eimeria necatrix in young chickens. Experimental Parasitology 30, 321–30.CrossRefGoogle ScholarPubMed
Hein, H. E. (1974). Eimeria brunetti: pathogenic effects in young chickens. Experimental Parasitology 36, 333–41.CrossRefGoogle ScholarPubMed
Joyner, L. P. & Norton, C. C. (1969). A comparison of two laboratory strains of Eimeria tenella. Parasitology 59, 907–13.CrossRefGoogle ScholarPubMed
Joyner, L. P. & Norton, C. C. (1980). The Eimeria acervulina complex: problems of differentiation of Eimeria acervulina, E. mitis and E. mivati. Protozoological Abstracts 4, 45–52.Google Scholar
Long, P. L. (1967). Studies on Eimeria praecox Johnson, 1930, in the chicken. Parasitology 57, 351–61.CrossRefGoogle Scholar
Long, P. L., Joyner, L. P., Millard, B. J. & Norton, C. C. (1976). A guide to laboratory techniques used in the study and diagnosis of avian coccidiosis. Folia Veterinaria Latina 6, 201–17.Google Scholar
Norton, C. C. & Joyner, L. P. (1980). Studies with Eimeria acervulina and E. mivati: pathogenicity and cross-immunity. Parasitology 81, 315–23.CrossRefGoogle Scholar
Norton, C. C. & Joyner, L. P. (1981). Eimeria acervulina and E. mivati: oocysts, life-cycle and ability to develop in the chicken embryo. Parasitology 83, 269–79.CrossRefGoogle Scholar
Reid, W. M. & Long, P. L. (1979). A diagnostic chart for nine species of fowl coccidia. Research Report 335, University of Georgia College of Agriculture Experiment Stations.Google Scholar
Ryley, J. F. & Betts, M. J. (1973). Chemotherapy of chicken coccidiosis. Advances in Pharmacology and Chemotheraphy 11, 221–93.CrossRefGoogle ScholarPubMed
Ryley, J. F., Meade, R., Hazelhurst, J. & Robinson, T. E. (1976). Methods in coccidiosis research; separation of oocysts from faeces. Parasitology 73, 311–26.CrossRefGoogle ScholarPubMed
Yvoré, P. & Coudert, P. (1972). Étude de la respiration endogéne et de la segmentation de l'oocyste d'Eimeria tenella durant la sporgonie. Annates de Recherches véterinaires 3, 131–43.Google Scholar