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Morphological and taxonomic studies on mammalian trypanosomes

III. Spontaneous occurrence of strains of Trypanosoma evansi devoid of the Kinetonucleus

Published online by Cambridge University Press:  06 April 2009

Cecil A. Hoare  and
S. C. J. Bennett
Cecil A. Hoare
Affiliation:
Wellcome Bureau of Scientific Research, London
S. C. J. Bennett
Affiliation:
Veterinary Research Laboratory, Khartoum
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Extract

An account is given of the spontaneous occurrence in the Anglo-Egyptian Sudan of strains of the camel trypanosome, Trypanosoma evansi, devoid of kinetonuclei.

These cases, of which four are recorded, were observed in widely separated localities within the enzootic area of camel trypanosomiasis.

A critical review is given of the question of “akinetonucleate” trypanosomes in general—in strains produced experimentally and in those occurring spontaneously—with special reference to their mode of origin and their significance in the production of new races.

The prevalence of “akinetonucleate” forms in normal strains of trypanosomes has been estimated in the case of a number of species and races hitherto not examined from this point of view, all the existing data being brought together in tabular form.

While the factors causing the appearance of “akinetonucleate” individuals and strains under natural conditions could not be ascertained, irregular division of the trypanosomes is held to be mainly responsible for the elimination of the kinetonucleus and for the persistence of the aberrant condition.

Type
Research Article
Information
Parasitology , Volume 29 , Issue 1 , January 1937 , pp. 43 - 56
Copyright
Copyright © Cambridge University Press 1937

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References

REFERENCES

Dobell, C. (1912). Some recent work on mutation in micro-organisms. J. Genet. 2, 201.CrossRefGoogle Scholar
Hoare, C. A. (1936). Morphological and taxonomic studies on mammalian trypanosomes. I. The method of reproduction in its bearing upon classification, with special reference to the lewisi group. Parasitology, 28, 98.CrossRefGoogle Scholar
Hoare, C. A. & Coutelen, F. (1933). Essai de classification des trypanosomes des mammifères et de l'homme basée sur leurs caractères morphologiques et biologiques. Ann. Parasit. hum. comp. 11, 196.CrossRefGoogle Scholar
Jírovec, O. (1929). Studien über blepharoplastlose Trypanosomen. Arch. Protistenk. 68, 187.Google Scholar
Jírovec, O. (1931). Ueber des Vorkommen von blepharoplastlosen Trypanosomen in normalen Stämmen. Zbl. Bakt. I. Abt. (Orig.), 121, 55.Google Scholar
Krijgsman, B. J. (1930). Biologische onderzoekingen aan het systeem: gestheer-parasiet. Deel I: De ontwikkeling van Trypanosoma evansi in de muis. Ned.-Ind. Blad. Diergeneesk. 42 (6), 499.Google Scholar
Kudicke, R. (1911). Die Wirkung orthochinoider Substanzen auf Rattentrypanosomen. Zbl. Bakt. 1. Abt. (Orig.), 59, 182.Google Scholar
Laveran, A. (1919). Sur les variétés acentrosomiques artificielles des trypanosomes. C.R. Acad. Sci., Paris, 168, 749.Google Scholar
Lavier, G. (1927). Existence d'individus naturellement “ablépharoplastiques” dans les souches de trypanosomes du group brucei récemment isolées. C.R. Soc. Biol., Paris, 97, 1611.Google Scholar
Lavier, G. (1928). A morphological study of isolated strains at Entebbe Laboratory, by the International Sleeping-Sickness Commission. Final Rep. League of Nations Internat. Comm. on Hum. Trypanosomiasis (C.H. 629). Geneva, 122.Google Scholar
Lavier, G. (1928 a). Existence de formes naturellement “ablépharoplastiques” chez Trypanosoma evansi et Trypanosoma equiperdum. C.R. Soc. Biol., Paris, 98, 132O.Google Scholar
Lavier, G. (1929). Note sur Trypanosoma venezuelense Mesnil, 191O. C.R. Soc. Biol., Paris, 101, 833.Google Scholar
Leupold, F. (1925). Die Bedeutung der Blepharoblasten als Angriffspunkt chemotherapeutischer Substanzen. Z. Hyg. 104, 641.CrossRefGoogle Scholar
Lwoff, A. & Lwoff, M. (1931). Recherches morphologiques sur Leptomonas ctenocephali Fanth. (Trypanosomide). Remarques sur l'appareil parabasal. Bull. biol. 65, 17O.Google Scholar
Nattan-Larrier, L. & Noyer, B. (1931). Trypanosome du dromadaire et trypanosome du cheval au Maroc. (Troisième mémoire.) Bull. Soc. Path. exot. 24, 569.Google Scholar
Nattan-Larrier, L. & Noyer, B. (1932). Le trypanosome du Débab égyptien. Bull. Soc. Path. exot. 25, 563 and 748.Google Scholar
Robertson, M. (1929). The action of acriflavine upon Bodo caudatus. A study of heritable modification in a non-conjugating protozoan and its relation to certain aspects of chemotherapy in trypanosomiasis. Parasitology, 21, 375.CrossRefGoogle Scholar
Roudsky, D. (1923). Sur les trypanosomes. Mémoires posthumes: Modifications morphologiques expérimentales des trypanosomes. Publication de l'Institut Pasteur et de la Société de Biologie, p. 11. Paris.Google Scholar
Wenyon, C. M. (1926). Protozoology, 1. London.Google Scholar
Wenyon, C. M. (1928). The loss of the parabasal body in trypanosomes. Trans. R. Soc. trop. Med. Hyg. 22, 85.Google Scholar
Werbitzki, F. W. (1910). Ueber blepharoblastlose Trypanosomen. Zbl. Bakt. 1. Abt. (Orig.), 53, 303.Google Scholar