Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-10T10:46:50.453Z Has data issue: false hasContentIssue false
  • English
  • Français

Some points relating to the Morphology and Development of Sarcocystis tenella

Published online by Cambridge University Press:  06 April 2009

J. P. McGowan
J. P. McGowan
Affiliation:
The Rowett Research Institute, Aberdeen.
Get access Rights & Permissions [Opens in a new window]

Extract

A short description is given of an important disease of sheep (Scrapie, Traber-krankheit, La Tremblante), believed to be caused by a heavy infection with Sarcocystis tenella, probably of increased virulence.

The itchiness and paresis, the congenital transmission by the mother, the non-contagiousness, the long incubation period, etc., are readily explained on this view and a method of control of the disease based on this theory has been highly successful.

The sarcocyst has been shown to be transmitted from sheep to sheep by intrauterine infection and by means of the milk.

The minute structure of the sarcocyst is described and it has been shown in particular that the sickle-shaped spores are surrounded by a capsule. Under certain conditions, as in 1 per cent, glucose water and in the centre of the ripe cyst, these spores swell out and become globular, eventually bursting and scattering small chromatin granules. The further evolution of these granules is dealt with.

The spread by means of milk and by the intestinal route is discussed1.

Type
Research Article
Information
Parasitology , Volume 15 , Issue 2 , June 1923 , pp. 139 - 150
Copyright
Copyright © Cambridge University Press 1923

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

Alexeieff, (1911). Sur la morphologie de la sarcosporidie du mouton (Sarcocystis tenella, Railliet), note préliminaire. Compte Rendu de la Société de Biologie, LXXI. p. 397.Google Scholar
Alexeieff, (1912–1913). Recherches sur les Sarcosporidies; étude morphologique. Archives de Zoologie Expérimentale et générale, LIII. 579.Google Scholar
Bertram, (1892). Beiträge zur Kenntnis der Sarkosporidien nebst einem Anhange über Schlauche in der Leibeshole von Rotatorien. Zoologische Jahrbuch, Anat. und Ontog. V. 581.Google Scholar
Von, Betegh (1909). Beiträge zum Entwicklungsgang der Sarkosporidien. Centralblatt für Bakteriologie, LII. 566.Google Scholar
Von, Betegh and Dorcich, (1912). Studien ueber Sarkosporidien. Centralblatt für Bakteriologie, LXIII. 387.Google Scholar
Crawley, (1916). The sexual evolution of Sarcocystis muris. Proceedings of the Academy of Natural Science of Philadelphia, LXVIII. 3.Google Scholar
Crawley, (1916). The zoological position of the Sarcosporidia. Proceedings of the Academy of Natural Science of Philadelphia 379.Google Scholar
Darling, (1910). Experimental Sarcosporidiosis in the guinea-pig. Journ. of Exper. Medicine, XII. 19.CrossRefGoogle Scholar
Erdmann, (1910). Beiträge zur Morphologie und Entwicklungsgeschiehte des Hammelsarkosporids in der Maus. Central. für Bakteriologie, LIII. 510.Google Scholar
Erdmann, (1914). Zu einigen strittigen Punkten der Sarkosporidienforschung. Arch. de Zool. Expér. et génér. LIII. 579.Google Scholar
Koch, (1904). Die experimentale Uebertragung der Miescherschen Schlauche. Berliner Klinische Wochenschrift, XLI. 321.Google Scholar
Lanfranchi, (1917–1918). Sur la possibilité du passage des trypanosomes dans le lait. Archives Italiennes de Biologie, LXVIII. 158.Google Scholar
Laveran, and Mesnil, (1899). Sur la morphologie des Sarcosporidies. Compte Rendu de la Soc. de Biol. XLVII. 245.Google Scholar
Marullaz, (1920). Sur l'évolution de la Sarcocystis muris. Annales de l'Institut Pasteur, XXXIV. 547.Google Scholar
McGowan, (1913). Note on Anaplasmosis. Journal of Path. and Bacter. XVIII. 130.Google Scholar
McGowan, (1914). Investigation into Scrapie. Bulletin of Edinburgh and East of Scotland College of Agriculture. Blackwood, Edinburgh.Google Scholar
Minchin, (1912). An Introduction to the Study of the Protozoa. Arnold, London.Google Scholar
Nègre, (1907). Sarcosporidiose Experimentale. C. R. de la Soc. de Biol. LXIII. 374.Google Scholar
Negre, (1910). Sur le stade Intestinale de la Sarcosporidie de la Souris. C. R. de la Soc. de Biol. LXVIII. 997.Google Scholar
Negri, (1908). Beobachtungen ueber Sarkosporidien. Centralblatt für Bakteriologie, XLVII. 56 and 612.Google Scholar
Negri, (1910). Beobachtungen ueber Sarkosporidien. Centralblatt für Bakteriologie LV. 372.Google Scholar
Perret, (1909). Contribution a l' étude des poisons des Actinies. Travaux du Laboratoire de M. Ch. Richet, VI. 288.Google Scholar
Richet, (1909). Notes sur la Thalassine, poison pruritogène, contenu dans les tentacules des actinies. Travaux du Laboratoire de M. Ch. Richet VI. 384.Google Scholar
Smith, Theobald (1901). The production of Sarcosporidiosis in the mouse by feeding infected muscular tissue. Journal of Exper. Med. VI. 1.CrossRefGoogle Scholar
Smith, Theobald (1905). Further observations on the transmission of Sarcocystis muris by feeding. Journal of Medical Research, XIII. 439.Google Scholar
Teichmann, (1911). Ueber die Teilungen der Keime in der Cyste von Sarcocystis tenella. Archiv für Protistenkunde, XXII. 239.Google Scholar