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Observations on the Biting-habits of some Tabanidae in Uganda, with special Reference to arboreal and nocturnal Activity*

Published online by Cambridge University Press:  10 July 2009

A. J. Haddow ,
J. D. Gillett ,
A. F. Mahaffy  and
R. B. Highton
A. J. Haddow
Affiliation:
Yellow Fever Research Institute, Entebbe, Uganda.
J. D. Gillett
Affiliation:
Yellow Fever Research Institute, Entebbe, Uganda.
A. F. Mahaffy
Affiliation:
Yellow Fever Research Institute, Entebbe, Uganda.
R. B. Highton
Affiliation:
Yellow Fever Research Institute, Entebbe, Uganda.
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Extract

In a search for the forest vector of yellow fever, catches of biting Diptera have been made by various methods in forest trees in Bwamba County, Uganda. The work here reported concerns Tabanids taken in catches made during the period 1944–45.

Three species of Tabanids have been taken in trees during these catches, and one of these, Chrysops centurionis, has proved to be mainly arboreal.

Observations on C. centurionis have shown that its main biting-activity begins just before sunset and reaches a peak during the hour after sunset. Thereafter the numbers taken diminish rapidly, but some activity continues throughout the night.

In the wet-season catches, this species was most prevalent in the forest canopy at heights of 50 to 60 feet above ground. In the dry season the most favourable level was lower, at 20 to 30 feet above ground.

It is suggested that monkeys are the natural hosts of C. centurionis, and that C. centurionis may be the vector of filarial infections among wild monkeys.

It is shown that there is a very close correspondence between the biting-behaviour of C. centurionis and that of the mosquito, A ëdes africanus.

Evidence of nocturnal activity has now been obtained in the case of one species of Tdbanus, three species of Haematopota and two species of Chrysops. It is suggested that there may be some connection between the remarkable eye colours of Tabanids and crepuscular or nocturnal activity.

Records of other Bwamba Tabanids are given.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 41 , Issue 1 , May 1950 , pp. 209 - 221
Copyright
Copyright © Cambridge University Press 1950

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References

Austen, E. E. (1911). Three new African species of the genus Chrysops (family Tabanidae).—Bull. ent. Res., 2, pp. 161, 168.Google Scholar
Edwards, F. W., Oldroyd, H. & Smart, J. (1939). British blood-sucking flies. London, Brit. Mus. (Nat. Hist.).Google Scholar
Haddow, A. J. (1945 a). On the mosquitoes of Bwamba County, Uganda. I. Description of Bwamba, with special reference to mosquito ecology.— Proc. zool. Soc. London, 115, pp. 1–13.Google Scholar
Haddow, A. J. (1945 b). The mosquitoes of Bwamba County, Uganda. II. Biting activity, with special reference to the influence of microclimate.—Bull. ent. Res., 36, pp. 33–73.Google Scholar
Haddow, A. J. & Dick, G. W. A. (1948). Catches of biting Diptera in Uganda, with anaesthetized monkeys as bait.—Ann. trop. Med. Parasit., 42, pp. 271–277.Google Scholar
Haddow, A. J., Gillett, J. D. & Highton, R. B. (1947 a). The mosquitoes of Bwamba County, Uganda. V. The vertical distribution and biting-cycle of mosquitoes in rain-forest, with further observations on microclimate.— Bull. ent. Res., 37, pp. 301–330.Google Scholar
Haddow, A. J. & Mahaffy, A. F. (1949). The mosquitoes of Bwamba County, Uganda. VII. Intensive catching on tree-platforms, with further observations on Aëdes (Stegomyia) africanus Theobald.—Bull ent. Res., 40, pp. 169–178.Google Scholar
Haddow, A. J., Smithburn, K.C., Mahaffy, A. F. & Bugher, J. C. (1947 b). Monkeys in relation to yellow fever in Bwamba County, Uganda.—Trans. R. Soc. trop. Med. Hyg., 40, pp. 677–700.CrossRefGoogle ScholarPubMed
Simpson, G. G. & Roe, A. (1939). Quantitative zoology. New York and London, McGraw-Hill.Google Scholar
Smithburn, K. C. & Haddow, A. J. (1946). Isolation of yellow fever virus from African mosquitoes.—Amer. J. trop. Med., 26, pp. 261–271.Google Scholar
Williams, C. B. (1937). The use of logarithms in the interpretation of certain entomological problems.—Ann. appl. Biol., 24, pp. 404–414.Google Scholar