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Nematode parasite populations in sheep on lowland farms III. The seasonal incidence of species

Published online by Cambridge University Press:  06 April 2009

H. D. Crofton
H. D. Crofton
Affiliation:
Department of Zoology, University of Bristol
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Extract

Various authors have recorded the seasonal occurrence of different species of nematode parasites in sheep. Some of these (Ross & Gordon, 1936; Gordon, 1950; Taylor, 1934) have been mainly interested in the epidemiology of outbreaks of parasitic disease, but others have recorded the incidence of different species in flocks in which no outbreak has occurred (Gordon, 1948, 1950; Morgan & Oldham, 1934; Morgan & Sloan, 1947; Morgan, Parnell & Rayski, 1950; Parnell, 1954; Parnell, Rayski, Dunn & Mackenzie, 1954; Stewart & Douglas, 1938; Tetley, 1935, 1941, 1949; Wilson, Morgan, Parnell & Rayski, 1953).

Type
Research Article
Information
Parasitology , Volume 47 , Issue 3-4 , December 1957 , pp. 304 - 318
Copyright
Copyright © Cambridge University Press 1957

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References

Cole, L. C. (1954). The population consequences of life history phenomena. Quart. Rev. Biol. 29, 103–37CrossRefGoogle ScholarPubMed
Crofton, H. D. (1952). The ecology of immature phases of trichostrongyle nematodes. IV. Larval populations on lowland pastures. Parasitology, 42, 77–84.CrossRefGoogle ScholarPubMed
Crofton, H. D. (1954). Nematode parasite populations in sheep on lowland farms. I. Worm egg counts in ewes. Parasitology, 44, 465–77.CrossRefGoogle ScholarPubMed
Crofton, H. D. (1955). Nematode parasite populations in sheep on lowland farms. II. Worm egg counts in lambs. Parasitology, 45, 99–115.CrossRefGoogle ScholarPubMed
Cunliffe, G. & Crofton, H. D. (1953). Egg sizes and differential egg counts in relation to sheep nematodes. Parasitology, 43, 275–86.CrossRefGoogle ScholarPubMed
Dinaburg, A. G. (1944 a). Development and survival under outdoor conditions of eggs and larvae of the common ruminant stomach worm, Haemonchus contortus. J. Agric. Res., U.S. Dept. Agric. 69, 421–33.Google Scholar
Dinaburg, A. G. (1944 b). The survival of the infective larvae of the common ruminant stomach worm, Haemonchus contortus, on outdoor grass plots. Amer. J. Vet. Res, 5, 32–7.Google Scholar
Gibson, T. E. (1952). The development of acquired resistance by sheep to infestation with the nematode Trichostrongylus axei. J. Helminth. 26, 43–53.CrossRefGoogle Scholar
Gordon, H. McL. (1948). The epidemiology of parasitic diseases with special reference to studies with nematode parasites of sheep. Aust. Vet. J. 24, 17–45.CrossRefGoogle Scholar
Gordon, H. McL. (1950). Some aspects of parasitic gastroenteritis of sheep. Aust. Vet. J. 26, 14–28.CrossRefGoogle ScholarPubMed
Kates, K. C. (1947). Diagnosis of gastro-intestinal nematode parasitism of sheep by differential egg counts. Proc. Helm. Soc. Wash. 14, 44–53.Google Scholar
Morgan, D. O. & Oldham, J. N. (1934). Further observations on the effect of heavy stocking on the worm burden under a system of rotational grazing. J. Helminth. 18, 177–82.CrossRefGoogle Scholar
Morgan, D. O., Parnell, I. W. & Rayski, C. (1950). Further observations on the seasonal variation in worm-egg output in Scottish hill sheep. J. Helminth. 24, 101–22.CrossRefGoogle Scholar
Morgan, D. O. & Sloan, J. E. N. (1947). Research on helminths hi hill sheep with special reference to seasonal variations in worm-egg output. Scot. Agric. 27, 28–35.Google Scholar
Parnell, I. W. (1954). The sequence and the levels of the helminth infestations in Scottish hill sheep. British Vet. J. 110, 499–507.CrossRefGoogle Scholar
Parnell, I. W., Rayski, C., Dunn, A. M. & Mackenzie, G. M. (1954). A survey of the helminths of hill sheep. J. Helminth. 27, 53–110.CrossRefGoogle Scholar
Peters, B. G., Leiper, J. W. G. & Clapham, P. A. (1941). A phenothiazine experiment statistically treated. J. Helminth. 19, 9–24.CrossRefGoogle Scholar
Ross, I. C. & Gordon, H. McL. (1936). The Internal Parasites and Parasitic Diseases of Sheep. Sydney: Angus and Robertson Ltd.Google Scholar
Stewart, M. A. & Douglas, J. R. (1938). Studies on the bionomics of Trichostrongylus axei (Cobbold) and its seasonal incidence on irrigated pastures. Parasitology, 30, 477–96.CrossRefGoogle Scholar
Taylor, E. L. (1934). The epidemiology of winter outbreaks of parasitic gastritis in sheep with special reference to outbreaks which occurred during winter 1933–4. J. Comp. Path. 47, 235–54.CrossRefGoogle Scholar
Tetley, J. H. (1935). Ecological studies on Nematodirus spp. in sheep in Manawatu district, New Zealand. J. Helminth. 13, 41–58.CrossRefGoogle Scholar
Tetley, J. H. (1941). The epidemiology of low-plane nematode infection in sheep in Mana-watu district, New Zealand. Cornell Vet. 31, 243–65.Google Scholar
Tetley, J. H. (1949). Rhythms in nematode parasitism of sheep. Bull. Dep. Sci. Industr. Res. N.Z. no. 96.Google Scholar
Wilson, A. L., Morgan, D. O., Parnell, I. W. & Rayski, C. (1953). Helminthological investigations on an Argyllshire hill farm. British Vet. J. 109, 179–90.CrossRefGoogle Scholar