Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-24T12:44:41.523Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies on Trypanosoma avium Danilewsky 1885 I. Incidence in some birds of Hertfordshire

Published online by Cambridge University Press:  06 April 2009

J. R. Baker
J. R. Baker
Affiliation:
Department of Parasitology, London School of Hygiene and Tropical Medicine*
Get access Rights & Permissions [Opens in a new window]

Extract

1. A survey of 227 rooks (Corvus frugilegus frugilegus L.) and seventy jackdaws (C. monedula spermologus Vieill.) was conducted in Hertfordshire. The birds were examined by means of cultures of their peripheral blood, or (in the case of eleven rooks and one jackdaw only) bone-marrow, on N.N.N. medium. Twenty-seven rooks (11·9%) and six jackdaws (8·6%) were found to be infected.

Some of the rooks were examined at a time of year when the trypanosomes are not present in the peripheral circulation; other rooks were examined in the first year of their life before adults of Ornithomyia avicularia (the vector of this parasite) were present. Ignoring birds of these two groups, twenty-six out of seventy-eight (33·3 %) adult rooks were found to be infected. This value probably approximates to the natural infection rate among adult rooks (and perhaps jackdaws).

2. The trypanosome in question is a large spindle-shaped form, measuring an average of 48·2µ in length (excluding flagellum) and 5·5µ in width. There is a tapering aflagellar region extending 14·1µ (on the average) beyond the kineto-plast. This trypanosome is assigned to the species T. avium Danilewsky, 1885.

Type
Research Article
Information
Parasitology , Volume 46 , Issue 3-4 , November 1956 , pp. 308 - 320
Copyright
Copyright © Cambridge University Press 1956

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

Baker, J. R. (1955). Developmental stages of (a) Haemoproteus and (b) trypanosomes in Ornithomyia. Trans. R. Soc. Trop. Med. Hyg. 49, 11.Google Scholar
Coatney, G. R. & Roudabush, R. L. (1937). Some blood parasites from Nebraska birds. Amer. Midl. Nat. 18, 1005–30.Google Scholar
Coatney, G. R. & West, E. (1938). Some blood parasites from Nebraska birds. II. Amer. Midl. Nat. 19, 601–12.Google Scholar
Coles, A. C. (1914). Blood parasites found in mammals, birds and fishes in England. Parasitology, 7, 17–61.Google Scholar
Danilewsky, B. (1885). Zur Parasitologie des Blutes. Biol. Zbl. 5, 529–37.Google Scholar
Danilewsky, B. (1889). La Parasitologie Comparée du Sang. I. Nouvelles Recherches sur les Parasites du Sang des Oiseaux. Kharkoff.Google Scholar
Diamond, L. S. & Herman, C. M. (1954). Incidence of trypanosomes in the Canada goose as revealed by bone marrow culture. J. Parasit. 40, 195–202.Google Scholar
Hertfordshire Farmer, The (1952). (Campaign against rooks and jackdaws.) 4, 111–13. Luton: The Leagrave Press.Google Scholar
Laveran, M. A. (1903). Sur un trypanosome d'une chouette. C.R. Soc. Biol., Paris, 55, 528–30.Google Scholar
Lühe, M. (1906). Die Trypanosomen der Vögel. In Mense, C., Handbuch der Tropenkrank-heiten, 3, 145–7. Leipzig.Google Scholar
Novy, F. G. & Macneal, W. J. (1905). On the trypanosomes of birds. J. Infect. Dis. 2, 256–308.Google Scholar
Petrie, G. F. (1905). Observations relating to the structure and geographic distribution of certain trypanosomes. J. Hyg., Camb., 5, 191–200.Google Scholar
Qadri, S. S. (1952). Protozoal parasites of freshwater fish. Ph.D. Thesis in Faculty of Science, University of London.Google Scholar
Stephens, J. W. W. & Christophers, S. R. (1908). The Practical Study of Malaria and other Blood Parasites, 3rd ed., pp. 359–61. Liverpool.Google Scholar
Wenyon, C. M. (1926). Protozoology, 2. London: Baillière, Tindall and Cox.Google Scholar
Witherby, H. F., Jourdain, F. C. R., Ticehurst, N. F. & Tucker, B. W. (1938–1941). The Handbook of British Birds, 5 vols. London: Witherby.Google Scholar
Woodcock, H. M. (1910). Studies on avian haemoprotozoa. I. On certain parasites of the chaffinch (Fringilla coelebs) and the redpoll (Linota rufescens). Quart. J. Micr. Sci. 55 (N.S.), 641–740.Google Scholar