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Nematode parasite populations in sheep on lowland farms VI. Sheep behaviour and nematode infections

  • H. D. Crofton (a1)
Extract

It is usual, when considering the trichostrongyle infections of sheep, to refer to parasitic stages in the host and free-living stages on pasture as two separate entities with ecological, structural and physiological differences emphasized by their temporal relationship. They are, however, interlinked phases in a continuous exchange process in which the host acts as a vehicle. The role of the host as a mediator in this exchange has received little attention until recently and has been mainly restricted to a more dynamic approach to problems of immunity. The behaviour of the host, as well as that of the parasite, is obviously of great importance, but there has been little work on the behaviour of sheep in relation to patterns of helminth infections, although Taylor (1954) discussed the problem in general terms.

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COPYRIGHT: © Cambridge University Press 1958
References
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Crofton, H. D. (1952). The ecology of immature phases of trichostrongyle nematodes. IV. Larval populations on lowland pastures. Parasitology, 42, 77–84.
Crofton, H. D. (1954). Nematode parasite populations in sheep on lowland farms. I. Worm egg counts in ewes. Parasitology, 44, 465–77.
Hunter, G. C. & Quenouille, M. H. (1952). A statistical examination of the worm egg count sampling technique for sheep. J. Helminth. 26, 157–70.
Taylor, E. L. (1954). Grazing behaviour and helminthic disease. Brit. J. anim. Behav. 2, 61–2.
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Parasitology
  • ISSN: 0031-1820
  • EISSN: 1469-8161
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