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An experiment in the use of discriminative clearing for the control of Glossina morsitans Westw. in Ankole, Uganda

Published online by Cambridge University Press:  10 July 2009

J. M. B. Harley  and
R. D. Pilson
J. M. B. Harley
Affiliation:
East African Trypanosomiasis Research Organization, Tororo, Uganda
R. D. Pilson
Affiliation:
East African Trypanosomiasis Research Organization, Tororo, Uganda
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Extract

The situation following different degrees of discriminative clearing against G. morsitans Westw. was examined in eastern Ankole District, Uganda. In one area, where the treatment had been more intensive, the fly density was low, and it seemed that the population might be maintained by immigration from an adjacent area to the west, where treatment had been less intensive and in parts of which fly density was relatively high. The application of more intensive discriminative clearing of the fly's concentration sites to the western area, together with completion of the treatment of the eastern, failed to result in any marked effect on the tsetse population except as regards its distribution. Before this intensive clearing, concentrations of G. morsitans occurred in a double-storey vegetation type, the chief component of the upper storey of which consisted of Acacia gerrardii. After the upper-storey trees in this were felled, concentrations were found in groups of tall Acacia hockii, 12–18 ft. high, which had appeared to be of little importance to the fly before clearing. A year after the treatment of the western area there was no apparent reduction in fly density. The feeding habits and rate of utilisation of reserves of the flies showed no significant change as a result of clearing.

It seems that the failure of the discriminative clearing régime applied in this area, compared with the effect produced by less intensive clearing elsewhere in Ankole, is due to the presence in this area alone of the groups of tall A. hockii.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 52 , Issue 3 , October 1961 , pp. 561 - 576
Copyright
Copyright © Cambridge University Press 1961

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References

van den Berghe, L. & Lambrecht, F. L. (1956). Moyens d'action centre les Glossina morsitans, West, dans le Mutara (Ruanda).—Ann. Soc. belge Med. trop. 36 pp. 197–203.Google Scholar
Brenan, J. P. M. (1959). Leguminosae. Part I. Subfam. Mimosoideae.—In Hubbard, C. E. & Milne-Redhead, E.Ed. Flora of tropical East Africa.—173 pp. London, Crown Agents.Google Scholar
Bursell, E. (1955). Experiments in tsetse control in southern Tanganyika.—Bull. ent. Res. 46 pp. 589–597.CrossRefGoogle Scholar
Bursell, E. (1959). The water balance of tsetse flies.—Trans. R. ent. Soc. Lond. 111 pp. 205–235.Google Scholar
Bursell, E. (1960). The measurement of size in tsetse flies (Glossina).—Bull. ent. Res. 51 pp. 33–37.CrossRefGoogle Scholar
Ford, J. (1953). Experimental reclamation.—Rep. E. Afr. Tsetse Tryp. Res. Reclam. Org. 1952 pp. 27–52.Google Scholar
Ford, J. (1954 a). Discriminative treatment of bush against G. morsitans.—5th Mtg int. sci. Comm. Tryp. Res., Pretoria, 1954 pp. 90–96.Google Scholar
Ford, J. [1954 b]. Experimental reclamation.—Rep. E. Afr. Tsetse Tryp. Res. Reclam. Org. 1953 pp. 36–59.Google Scholar
Ford, J. [1955]. Experimental reclamation.—Rep. E. Afr. Tsetse Tryp. Res. Reclam. Org. 1954–55 pp. 41–54.Google Scholar
Ford, J. (1956). Reclamation.—Rep. E. Afr. Tryp. Res. Org. 1955–56 pp. 37–48.Google Scholar
Ford, J., Glasgow, J. P., Johns, D. L. & Welch, J. R. (1959). Transect fly-rounds in field studies of Glossina.—Bull. ent. Res. 50 pp. 275–285.CrossRefGoogle Scholar
Glover, P. E., Jackson, C. H. N., Robertson, A. G. & Thomson, W. E. F. (1955). The extermination of the tsetse fly, Glossina morsitans Westw., at Abercorn, Northern Rhodesia.—Bull. ent. Res. 46 pp. 57–67.CrossRefGoogle Scholar
Hammarsten, O. (1911). A text book of physiological chemistry.—New York.Google Scholar
Jack, R. W. (1912). Observations on the breeding haunts of Glossina morsitans.—Bull. ent. Res. 2 pp. 357–361.CrossRefGoogle Scholar
Jack, R. W. (1939). Studies in the physiology and behaviour of Glossina morsitans Westw.—Mem. Dep. Agric. S. Rhod. no. 1, 203 pp.Google Scholar
Jackson, C. H. N. (1933). The causes and implications of hunger in tsetse-flies.—Bull. ent. Res. 24 pp. 443–482.CrossRefGoogle Scholar
Jackson, C. H. N. (1953). A mixed population of Glossina morsitans and G. swynnertoni.—J. Anim. Ecol. 22 pp. 78–86.CrossRefGoogle Scholar
Lloyd, H. M. (1959). Annual report of the Tsetse Survey and Reclamation Department (Tanganyika), 1958, 29 pp.Google Scholar
Napier, Bax S. (1943). A practical policy for tsetse reclamation and field experiment. Parts I and II.—E. Afr. agric. J. 9 pp. 2–13, 83–87.Google Scholar
Shircore, J. O. (1914). Suggestions for the limitation and destruction of Glossina morsitans.—Bull. ent. Res. 5 pp. 87–90.CrossRefGoogle Scholar
Swynnerton, C. F. M. (1921). An examination of the tsetse problem in North Mossurise, Portuguese East Africa.—Bull. ent. Res. 11 pp. 315–385.CrossRefGoogle Scholar
Swynnerton, C. F. M. (1936). The tsetse flies of East Africa. A first study of their ecology, with a view to their control.—Trans. R. ent. Soc. Lond. 84 pp. 1–579.Google Scholar