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Quantitative modelling and prediction of development times of the free-living stages of Ostertagia ostertagi under controlled and field conditions

Published online by Cambridge University Press:  06 April 2009

R. R. Young ,
R. M. Nicholson ,
R. L. Tweedie  and
H.-J. Schuh
R. R. Young
Affiliation:
CSIRO Division of Animal Health, Animal Health Research Laboratory, Private Bag No. 1, P.O., Parkville, Victoria 3052
R. M. Nicholson
Affiliation:
‘Wareek’, via Maryborough, Victoria 3465
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Summary

The development of the free-living stages of Ostertagia ostertagi incubated at constant temperatures from 5 to 27 °C and in dung pats in the field was observed. The death rates were adequately described by a single exponential function and the distribution of times for development by a delayed gamma density function. The times of appearance of selected development stages such as maximum numbers of embryonated eggs and half the maximum number of infective larvae, were highly dependent on temperature. The relationships between these times and temperature were adequately described by the Arrhenius equation. The parameters of this equation and mean hourly temperatures recorded in dung pats in the field were used to predict development times in the field. A comparison of predicted and observed times showed that an initial delay accounted for a large proportion of the time required for development in dung pats, particularly the embryonation of eggs. This delay was attributed to lack of aeration associated with high moisture content of the dung pat.

Type
Research Article
Information
Parasitology , Volume 81 , Issue 3 , December 1980 , pp. 493 - 505
Copyright
Copyright © Cambridge University Press 1980

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References

REFERENCES

Andersen, F. L. & Levine, N. D. (1968). Effect of desiccation on survival of the free-living stages of Trichostrongylus colubriformis. Journal of Parasitology 54, 117–28.CrossRefGoogle ScholarPubMed
Barrett, J. (1968). The effect of temperature on the development and survival of the infective larvae of Strongyloides ratti Sandground, 1925. Parasitology 58, 641–51.CrossRefGoogle ScholarPubMed
Ciordia, H. & Bizzell, W. E. (1963). The effects of various constant temperatures on the development of the free-living stages of some nematode parasites of cattle. Journal of Parasitology 49, 60–3.CrossRefGoogle ScholarPubMed
Crofton, H. D. & Whitlock, J. H. (1965). Ecology and biological plasticity of sheep nematodes. V. The relationship between egg volume and hatching time. Cornell Veterinarian 55, 274–9.Google ScholarPubMed
Michel, J. F. (1969). The epidemiology and control of some nematode infections of grazing animals. Advances in Parasitology 7, 211–82.CrossRefGoogle ScholarPubMed
Pandey, V. S. (1972). Effect of temperature on development of the free-living stages of Ostertagia ostertagi. Journal of Parasitology 58, 1037–41.CrossRefGoogle ScholarPubMed
Read, K. L. Q. & Ashford, J. R. (1968). A system of models for the life cycle of a biological organism. Biometrika 55, 211–21.CrossRefGoogle ScholarPubMed
Rose, J. H. (1961). Some observations on the free-living stages of Ostertagia ostertagi, a stomach worm of cattle. Parasitology 51, 295–307.CrossRefGoogle ScholarPubMed
Silverman, P. H. & Campbell, J. A. (1959). Studies on parasitic worms of sheep in Scotland. I. Embryonic and larval development of Haemonchus contortus at constant conditions. Parasitology 49, 23–38.CrossRefGoogle ScholarPubMed
Schuh, H.-J. & Tweedie, R. L. (1979). Parameter estimation using transform estimation in time-evolving models. Mathematical Biosciences 45, 37–67.CrossRefGoogle Scholar
Waller, P. J. & Donald, A. D. (1970). Egg size and desiccation survival in Trichostrongylus colubriformis (Nematoda: Trichostrongylidae). Parasitology 61, 205–9.CrossRefGoogle ScholarPubMed
Wilson, A. G. L., Lewis, T. & Cunningham, R. B. (1979). Overwintering and spring emergence of Heliothis armigera (Hübner) (Lepidoptera: Noctuidae) in the Namoi Valley, New South Wales. Bulletin of Entomological Research 69, 97–109.CrossRefGoogle Scholar
Young, R. R., Anderson, N., Overend, D., Tweedie, R. L., Malafant, K. W. J. & Preston, G. A. N. (1980). The effect of temperature on times to hatching of eggs of the nematode Ostertagia circumcincta. Parasitology 81, 477–491.CrossRefGoogle ScholarPubMed
Young, R. R. & Trajstman, A. C. (1980). A rapid technique for the recovery of strongyle infective larvae from pasture and soil samples. Parasitology 80, 425–31.CrossRefGoogle Scholar