Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-28T10:14:13.907Z Has data issue: false hasContentIssue false

Investigations into the free-living phase of the life-cycle of Nematodirus helvetianus

Published online by Cambridge University Press:  06 April 2009

J. H. Rose
Affiliation:
Central Veterinary Laboratory, Weybridge

Extract

The free-living phase of the life-cycle of Nematodirus helvetianus was studied out of doors on grass plots and the effects of temperature and humidity on the free-living stages were studied in the laboratory. The results of these observations are discussed in relation to the bionomics of N. battus and N. filicollis, and tentative deductions made regarding the epidemiology of N. helvetianus infection.

I wish to thank Mr J. Bailey for technical assistance.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1966

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Christie, M. G. (1962). On the hatching of Nematodirus battus, with some remarks on N. filicolis. Parasitology 52, 297313.CrossRefGoogle Scholar
Crofton, H. D. (1963). Nematode parasite population in sheep and on pasture. Tech. Commun. Commonw. Bur. Helminth. no. 35, pp. 104.Google Scholar
Douvres, F. W. (1957). Keys to the identification and differentiation of the immature parasitic stages of gastro-intestinal nematodes of cattle. Am. J. vet. Res., 18, 8185.Google Scholar
Erhardova, B. (1962). A contribution to the ecology of parasitic worms in ruminants. Čslká Parasit. 9, 191199.Google Scholar
Gibson, T. E. (1958). The development and survival of the pre-parasitic stages of Nematodirus spp. on pasture herbage. J. comp. Path. Ther. 68, 388–44.Google Scholar
Gibson, T. E. (1963). Experiments on the epidemiology of Nematodiriasis. Res. vet. Sci. 4, 258–68.CrossRefGoogle Scholar
Herlich, H. & Porter, D. A. (1953). Experimental infections of calves with the nematode Nematodirus helvetianus. Am. J. vet. Res. 14, 198201.Google ScholarPubMed
Michel, J. F. & Rose, J. H. (1954). Some observation on the free-living stages of the cattle lungworm in relation to their natural environment. J. comp. Path. Ther. 64, 195205.CrossRefGoogle ScholarPubMed
Morgan, D. O. & Soulsby, E. J. L. (1956). New records of nematodes in British cattle. Vet. Rec. 68, 1029.Google Scholar
Rose, J. H. (1955). Observations on the bionomics of the free-living larvae of the lung-worm Dictyocaulus filaria. J. comp. Path. Ther. 65, 370–81.CrossRefGoogle Scholar
Rose, J. H. (1959 a). Nematodirus helvetianus an intestinal worm of cattle. Vet. Rec. 71, 470–72.Google Scholar
Rose, J. H. (1959 b). Metastrongylus apri the pig lungworm. Observations on the free-living embryonated egg, and the larvae in the intermediate host. Parasitology 49, 439447.CrossRefGoogle ScholarPubMed
Rose, J. H. (1960). Nematodirus helvetianus in British sheep. Vet. Rec. 72, 215–16.Google Scholar
Rose, J. H. (1961). Some observations on the free-living stages of Ostertagia ostertagi, a stomach worm of cattle. Parasitology 51, 295307.CrossRefGoogle ScholarPubMed
Rose, J. H. (1963). the relationship between environment and the development and migration of the free-living stages of Haemonchus contortus. J. comp. Path. Ther. 74, 163–72.CrossRefGoogle Scholar
Thomas, R. J. (1957). A comparative study of the infective larvae of Nematodirus species parasitic in sheep. Parasitology 47, 6065.CrossRefGoogle ScholarPubMed
Thomas, R. J. (1959). A comparative study of the life histories of Nematodirus battus and N. filicollis in sheep. Parasitology 49, 374–86.CrossRefGoogle Scholar
Thomas, R. J. & Stevens, A. J. (1960). Ecological studies on the development of the pasture stages of Nematodirus battus and N. filicollis nematode parasites of sheep. Parasitology 50, 3149.CrossRefGoogle Scholar
Zawadowsky, M. M. & Zviaguintzev, S. N. (1933). The seasonal fluctuation in the number of eggs of Nematodirus spp. in faeces. J. Parasit. 19, 269–79.CrossRefGoogle Scholar
Zviaguintzev, S. N. (1934). Contributions to the history of development of Nematodirus helvetianus. Trudy¯. Din. Razv. 8, 186202.Google Scholar