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Black-fly and the Environment

Published online by Cambridge University Press:  24 August 2009

Extract

Black-fly (Simulium spp.) occurs practically through out the world. It poses biting problems wherever it is found. In Africa, black-fly carries a human disease called Onchocerciasis or river blindness. The World Health Organization has decided on a £50 million project, spreading over 20 years, to control this disease. They propose to apply, very extensively and protractedly, larvicides which are non-selective, reasonably persistent, and only mildly toxic to Man and other higher animals but fatally toxic to Simulium larvae (the target) and some other forms of aquatic life (non-target). This will result in the reduction of the already small quantities of fish available to the people. It will also put at risk the lives of the animals that constitute the major source of the scanty protein supply of the local populace, and hence conceivably jeopardize their own lives.

The decision to go ahead with the project was based on the grounds that chemical control of Simulium breeding is the only sure method of dealing with Onchocerciasis, and that the areas of West Africa to be affected are among the least developed. But foreseeable consequences of the project alone are considered serious enough to justify its reconsideration, while quite likely consequences are powerful enough in themselves to make such as review seem necessary.

Until such a time as the world is able to devise a universally acceptable method of controlling black-fly, the current method of treatment preventing Onchocerciasis from causing blindness should be extended to all areas where the disease is present.

Type
Main Papers
Copyright
Copyright © Foundation for Environmental Conservation 1975

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References

Asibey, E. O. A. (1974). Wildlife as a source of protein in Africa south of the Sahara. Biological Conservation, 6(1), pp. 32–9.CrossRefGoogle Scholar
Beckett, W. H. (1944). Akokoaso: A Survey of a Gold Coast Village. London School of Economics, Monographs on Social Anthropology, No. 10, London: 95 pp. (mimeogr.).Google Scholar
Clottey, St John A. (1968). Production and Utilization of Animal Products. Ghana Food Research Institute, Accra: 88 pp. (mimeogr.).Google Scholar
Clottey, St John A. (1971). Wildlife as a source of protein in Ghana. FAO Nutr. Afr., 9, pp. 711.Google Scholar
Cremoux, P. (1963). The importance of game meat consumption in the diet of sedentary and nomadic peoples of the Senegal River Valley. Pp. 127–9 in Conservation of Nature and Natural Resources in Modern African States (Ed. Watterson, Gerald G.). IUCN Publications, New Series, No. 1, Morges: 367 pp., illustr.Google Scholar
Crosskey, R. W. (1960). Distribution records of the black-flies (Diptera: Simuliidae) of Nigeria and the Southern Cameroons, with a key for their identification in the pupal stage. J. W. Afr. Sci. Ass., 6(1), pp. 2746, 6 maps.Google Scholar
Davies, J. B. (1963). Further distribution records of the black-flies (Diptera: Simuliidae) of Nigeria, with notes on the occurrence of Simulium damnosum Theo. in abnormal situations. J. W. Afr. Sci. Ass., 7(2), pp. 134–7.Google Scholar
Edwards, E. E. (1956). Human Onchocerciasis in West Africa with special reference to the Gold Coast. J. W. Afr. Sci. Ass., 2(1), pp. 135, map.Google Scholar
Hartog, A. P. Den & Vos, A. De (1973). The use of rodents as food in Africa. FAO Nutr. Newsl., 11, pp. 114.Google Scholar
Kassem, M. H. (1966). Ghana Animal Husbandry Production and Health. Country Study UN/FAO, FAO Regional Headquarters, Accra: 44 pp. (mimeogr.).Google Scholar
Lucy, Geoffrey (1974). Sightless saviour of the world's blind. The Reader's Digest, 104, pp. 33–8, illustr.Google Scholar
Maloiy, G. M. O. (1965). African game animals as a source of protein. Nutrition Abstracts and Reviews, 35(4), pp. 903–8.Google ScholarPubMed
Muirhead-Thomson, J. (1974). Blackfly and the environment. New Scientist, 62(898), pp. 384–5, illustr.Google Scholar
Nicol, B. M. (1949). Nutrition of Nigerian peasant farmers, with special reference to the effects of vitamin A and riboflavin deficiency. Brit. J. Nutr., 3, pp. 2543, 2 figs.CrossRefGoogle Scholar
Nicol, B. M. (1952). The nutrition of Nigerian peasants with special reference to the effects of deficiencies of the B complex, vitamin A, and animal protein. Brit. J. Nutr., 6, pp. 3455, 2 figs.CrossRefGoogle Scholar
Nicol, B. M. (1956a). The nutrition of Nigerian children, with particular reference to their energy requirements. Brit. J. Nutr., 10, pp. 181–97, 2 figs.CrossRefGoogle ScholarPubMed
Nicol, B. M. (1956b). The nutrition of Nigerian children, with particular reference to their ascorbic-acid requirements. Brit. J. Nutr., 10, pp. 275–85, fig.CrossRefGoogle ScholarPubMed
Noamesi, G. K. (1966a). Dry season survival and associated longevity and flight range of Simulium damnosum Theobald in northern Ghana. Ghana Med. J., 5(3), pp. 95102.Google Scholar
Noamesi, G. K. (1966b). Plans for inter-country cooperation in controlling the vector of Onchocerciasis in northern Ghana and Upper Volta. J. W. Afr. Sci. Ass., 11(2), pp. 6872, fig.Google Scholar
Noamesi, G. K. (1970). Dry season survival of Simulium damnosum Theobald as a regional problem for West Africa. J. W. Afr. Sci. Ass., 15(2), pp. 97101, 2 maps.Google Scholar
Noel-Buxton, M. B. (1956). Field experiments with DDT in association with finely-divided inorganic material for the destruction of the immature stages of the genus Simulium in the Gold Coast. J. W. Afr. Sci. Ass., 2(1), pp. 3640.Google Scholar
Roure, G. (1963). Wildlife management in Ivory Coast. Pp. 309–10 in Conservation of Nature and Natural Resources in Modern African States (Ed. Watterson, Gerald G.). IUCN Publications, New Series, No. 1, Morges: 367 pp., illustr.Google Scholar
Smith, G. K. (1962). Report on Soil and Agricultural Survey of Sene-Obosum River Basin, East Brong-Ahafo, and Ashanti Regions, Ghana. U.S. Department of State, A.I.D., Washington, D.C.: [copy mislaid], illustr.Google Scholar
Vorkeh, K. (1974a). Ghana's declining poultry industry. The Legon Observer, 9, pp. 174–8.Google Scholar
Vorkeh, K. (1974b). Ghana's cattle crisis. West Africa, 2966 pp. 457–9.Google Scholar