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Natural Transmission of Heart-water of Sheep by Amblyomma variegatum (Fabricius 1794)

Published online by Cambridge University Press:  06 April 2009

R. Daubney
R. Daubney
Affiliation:
Division of Veterinary Research, Kenya Colony.
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Extract

The disease “Heart-water” of sheep, cattle and goats has been recognised in South Africa for upwards of 70 years, and as long ago as 1902 Lounsbury demonstrated the part played by the common bont-tick, Amblyomma hebraeum Koch 1844, in its transmission. The virus of the disease does not pass through the egg of the tick, but a tick infected in the larval or the nymphal stages is capable of transmitting the infection when feeding as a nymph or adult respectively. Further, according to Lounsbury, a tick infected as a larva may feed upon an insusceptible host during the nymphal stage, and still remain infective until the final feed as an adult.

Type
Research Article
Information
Parasitology , Volume 22 , Issue 2 , March 1930 , pp. 260 - 267
Copyright
Copyright © Cambridge University Press 1930

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References

Cowdry, E. V. (1925). Cytological studies on heart-water. I. The observation of Rickettsia ruminantium in the tissues of infected animals. II. The observation of Rickettsia ruminantium in the tissues of the vector, Amblyomma hebraeum. J. Exp. Med. 42, 231.CrossRefGoogle Scholar
Lounsbury, C. P. (1902). Tick-heart-water investigations. Agric. J. Cape of Good Hope, 20, 29. Heart-water in sheep and goats, special tick investigations. Agric. J. Cape of Good Hope 21, 315. Heart-water in sheep and goats, further experiments. Agric. J. Cape of Good Hope 21, 165, 221, 222.Google Scholar
Lounsbury, C. P. (1905). Rep. Brit. Assoc. Adv. Sci. 1905, p. 283.Google Scholar
Nicolau, S. and Galloway, I. A. (1928). Borna disease and enzootic encephalomyelites of sheep and cattle. Med. Res. Council London. Special Report Series, No. 121, p. 63.Google Scholar
Nuttall, G. H. F. (1915). Observations on the biology of ticks. Parasitology, 7, 419.CrossRefGoogle Scholar
Robinson, L. E. (1926). The genus Amblyomma, 302 pp., being Part iv of A Monograph of the Ixodoidea, by Nuttall, Warburton and Robinson (Cambridge: University Press).Google Scholar
Steck, W. (1928). Pathological studies on heart-water, 13th and 14th Reports of the Director Vet. Educ. and Res. p. 283.Google Scholar